YAESU FT-450 FT-450AT Users Manual
Contents
1. A B button the roles of VFO A and VFO B are swapped so the primary VFO becomes the secondary VFO and the secondary VFO becomes the primary VFO One final note on this subject If you wish to make VFO A or VFO B your primary channel press MW V M twice If you get the wrong one as the primary channel apply item 4 bove and press the A B button to swap VFO roles 5 3 Band VFO Setup Memory Each band also maintains a VFO setup channel When you change bands the system identifies the band to which the receiver data now belongs to based on the receiver frequency and updates the current data in that memory If the receiver frequency is outside of any amateur band then the GEN band memory will be updated As you step through the different bands the VFO setup in the tuning VFO will be updated to reflect the data that last controlled that band 5 4 Home Memory There is a preferred VFO setup for the bands in the range from 300 kHz through 33 mHz and another for the bands in the range of 33 mHz through 54 mHz To store VFO A into one of these home positions f press the MW V M button and then press the HOME RCL button within 10 seconds To select the home storage VFO setup in the current band range either HF or 6 meter to act as VFO A f press the HOME RCL button 5 5 Quick Memory There is one channel set aside for quick storage and retrieval To save the current primary VFO data in quick storage2. The upper right six buttons have two names on each If the F is illuminated the button performs the function of the upper name and the F is extinguished Otherwise those buttons perform the function of the lower name Definitions f press press a button preceded by the Fm button t press press a button and hold for 1 second adaptable 0 5 1 0 1 5 or 2 0 seconds YAESU HF 50 mHz Transceiver FT 450 User s Manual CONTROL ACT STATE FUNCTION ON OFF T PRESS Toggle system ON OFF DSP PRESS Step DSP contour notch digital noise reduc width OFF ATT IPO PRESS Step through combinations of ATT and IPO off and on T PRESS CW Voice tone to compare with CW tone to spot the frequency NB PRESS Toggles noise blanker AGC PRESS Step automatic gain control through auto fast slow T PRESS Turn off automatic gain control BANDY PRESS Steps forward through enabled bands menu Steps forward through bands to enable disable BANDA PRESS Steps backward through enabled bands menu Steps backward through bands to enable disable TUNE PRESS Toggle enable disable of automatic antenna tuner T PRESS Start tuning to antenna process F PRESS Enter the Fm function state menu Generates the next group of 5 practice CW characters cwtrain T PRESS Enter or leave the menu state
3. press the VOX STO button To select the quick storage VFO setup to act as VFO A press the HOME RCL button 14 YAESU HF 50 mHz Transceiver FT 450 User s Manual 5 6 Channels Memories See Table 7 for channel designation 5 6 1 Recall Simply press the MW V M button and then select the desired active channel with the DSP SEL knob If memory groups is adapted ON pressing the DSP SEL knob highlights the group number and the DSP SEL knob now steps one active group at a time Pressing the DSP SEL knob again returns the function of the knob to select from the active channels within the current group Note that if the MAIN dial is turned in memory mode the system immediately copies the data into the working VFO setup and modifies that copy as VFO A The channel memory has not been changed and you can return to that channel by simply pressing the MW V M button again 5 6 2 Storage Set up the frequency mode filters etc that you desire for that channel Then f press the MW V M button Turn the DSP SEL knob to select the desired memory channel Note that even 1f channels are in groups all 50 memory channel of each group are accessed followed by the next group and so on Pressing the DSP SEL knob has no effect When you reach the desired channel press the V M button to store the information in that channel Warning The process will be aborted if no action is taken
4. SPLIT operation PMS SCAN PRESS F Toggle program memory scan between two frequencies Toggle upward scanning of frequencies or memory channel Table 1 Controls This document was derived from the information in the Yaesu HF 50 MHz Transceiver FT 450 Operation Manual 2 1 Power SHIFT To toggle the FT 450 transceiver ON or OFF t press the ON OFF button Some portion of the display will show when the unit is on Needless to say the 12 volts must already be supplied to the unit The power switch is also used to reset memory and or adaptation in the FT 450 Warning Do not perform any of the first three following steps unless you are prepared to lose information 1 Turning the power on while holding the Fw button will restore adaptation to the factory default settings 2 Turning the power on while holding the VM V M button will clear all memory channels except QMB 3 Turning the power on while holding the HOME RCL button will both restore adaptation to the factory default settings and clear all memory channels except QMB YAESU HF 50 mHz Transceiver FT 450 User s Manual 4 Turning the power on while holding the MODE V button will display the current software version You must then turn the power off and then on to resume normal operation 3 Receiver The transceiver provides both a multi band sensitive receiver and transmitter Most of the controls have to do with the operat
5. The system uses these tones to signal completion of an action or reaching certain values as in EXT MENU BEEPVOL default either FIX10 or LNK 8 our of range of FIXO FIX100 or LNK 50 LNK 50 Sets the volume of the of the transceiver beep alert to the user This is either a fixed volume or one that is linked to and offset from the audio volume control To toggle between a fixed volume and a volume linked to the setting of the audio volume control press the Fw key CLK SFT default OFF out of ON or OFF Shifts the CPU clock frequency Used to move a spurious response birdie if it interferes with reception EMERGEN default OFF out of ON or OFF Set Alaska emergency spot frequency of 5167 5 kHz MEM GRP default OFF out of ON or OFF Reconfigures the 500 general purpose memory channels into 10 groups of 50 channels MEM TAG Replace the memory channel name with your own 7 character tag When you select a channel the number will display for two seconds before the tag displays PEAKHLD default ON out of ON or OFF Hold the S meter on its peak value for 0 5 seconds to make it easier to read QSPL F default 5 out of 20 20 kHz in 1 kHz increments Offset frequency when using the one step Quick Split for transmit RFPOWER default 100 watts out of 5 100 watts in 1 watt increments Set the maximum transmit power for the current band 20 YAESU HF 50 mHz Transceiver FT 450 User s Manual SCN RES def
6. even in the same mode To toggle split frequency operation press the STEP SPLIT button The work SPLIT is highlighted in the display The current receive VFO setup appears on the display If you want to keep it press either the A B or A B button to either put that setup in the transmit VFO or swap setups with the current transmit VFO Then enter the transmit frequency and any other parameters associated with it and press the A B button to swap it with the receive VFO setup You are now ready to communicate Whenever the Transceiver is transmitting the frequency display will show the transmit frequency Otherwise it will show the receive frequency There is also a quick split feature in the system If you t press the STEP SPLIT button the system will automatically copy the receive VFO into the transmit VFO and add 5 kHz to the transmit frequency You may now communicate as before Note see section 5 for a better understanding of the contents of a VFO setup and section 5 5 a more complete description of the A B or A B button action YAESU HF 50 mHz Transceiver FT 450 User s Manual 3 4 Extracting the Signal from the Noise Every stage of the FT 450 Transceiver contributes to the effort to improve the signal to noise ratio In order to deal with the wide dynamic range of input signals the operator may optionally insert 20 db of attenuation or disable the radio frequency RF amplifier i
7. milliseconds Transmit delay when from key to carrier CWPADDLE default KEY out of KEY or MIC Use paddle via KEY jack or use up down buttons on MH 31 A8J microphone MIC as paddle CWPITCH default 700 out of 400 500 600 700 or 800 Hz Set the pitch of the CW sidetone BFO offset and the CW filter center frequencies To hear the tone press the METER DIM button CWSPEED default 12 WPM 60 CPM out of 4 60 WPM or 20 300 CPM Set the CW speed of the automatic keyer To toggle between display in words per minute WPM and characters per minute CPM press the Fm key To hear the tone press the METER DIM button CWSTONE default either FIX10 or LNK 8 our of range of FIXO FIX100 or LNK 50 LNK 50 Set the CW sidetone volume leve To toggle between a fixed volume and a volume linked to the setting of the audio volume control press the Fm key To hear the tone press the METER DIM button CWTRAIN default N out of N A or M Set CW training function N Numeric A Alpha and M Mixed See section 8 4 CW Training for use of this parameter CWWEIGHT default 1 3 0 out of 1 2 5 1 3 0 1 3 5 1 4 0 and 1 4 5 Set the CW weight of dot size dash size BCN TIM default OFF out of OFF 1 255 seconds Selects the time interval between transmission of a CW beacon message BCN_TXT default not applicable Stores the message for a beacon transmission This adaptation procedure is more complicated t
8. oe 1 2 1 A O O 3 A A E E E EE E E A E auathA 4 3 1 Communications Mode ds as 4 3 2 E NN E 4 3 3 VFO Variable Frequency Oscillator ooooococccononnnnnnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnononinininnninininess 5 A O NO 6 3 3 2 Split Pied nency OPTA da nda 6 3 4 Extracting the Signal from the Noise ooocccccononnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnncnnninininens 7 3 4 1 RF Attenuation and Intercept Point Optimization IPO oooccccnnccnnonncnnnnnnnnnnnnnnnccnnnnnnnononnns 7 BiA2 Noise Blank ici a bel Shelgets vacers 7 3 4 3 Digital Signal Processor lt s sccccccccekccssesrs idea ig e A E EEA EE ae 7 AON A econ ccecuerts Sa eee cadet ieedugi wu deny vette steeahnedee ati sig eae lara cim ta 8 e A ea Mock thal eee Sar stata ta sale O tal satus Madina Uk trates 8 3 4 3 3 Digital Noise Reduction DNR cccesscecssssececssseececeesesseceesesaeeeensseeees 8 3434 Bene Pass Wide Gh eae hse Ee Od 8 ofr eo me all gt gar Ree eR OR Ce A NN OER E ON 9 So EW RE Verses rn EN 9 34 467 CW SOONG A O TREO 9 3 4 5 A nn raven at A A eens 9 3 4 5 7 Automatic Gain GOntOl aie eee AA ee aes ade 9 3 4 5 8 Radio Frequency Volume Control ooooococccooonnccnononccononanononcnnnnnnccnononoss 10 3 4 6 Audio Volume Controls csse aed sacs e e AE E 10 BR IEN A0 I AEN EIA E NE IE E ib 10 TEARS A sate a bl 10 4 1 A A A RIO ENS AER ER NA 11 AII Microphone BULA 11 4 1 2 Voice Activated Transmitter Switching VO
9. on 20 db attenuation input processor off 3 4 2 Noise Blanking Interference rejection within the bass band follows the IF filtering This is used to filter noise from automobiles or any other electrical sparks It is toggled on and off by the NB button and the display will show the status of the NB on the second figure top right on the display 3 4 3 Digital Signal Processor CATA LARA PO dicci n j Pressing the DSP button will cause a gt sign to appear in front of the CONTOUR signal processing A CONTOUR Epp NOTCH WIDTH SHIFT YAESU HF 50 mHz Transceiver FT 450 User s Manual graph on the left side of the display Repeated press of the DSP button will move the gt sign down to the NOTCH graph then to the DNR graph then to the WIDTH and finally to remove the gt sign While the gt sign is displayed and if M TUNE VFO A or VFO B shows on the bottom right of the screen the DSP SEL knob is used to adjust the digital signal processor parameters CONTOUR 3 4 3 1 Contour The shape of the band pass may be rounded up or down over a small or medium width of the band pass That conto UREA P bulge may be moved over the width of the band pass ICONTOURIEE own The first press of the DSP button causes the gt sign to be positioned next to the CONTOUR graph Pressing the DSP SEL knob steps the filter from none to narrow to medium with bu
10. see section 6 adaptation power off Reset adaptation to factory default when turn power on METER DIM PRESS Step through power ALC standing wave ratio meter T PRESS Start brightness adjustment via DSP SQL end with press MODE Y PRESS Steps forward through enabled modes menu Steps forward through modes to enable disable T PRESS CW Toggles between USB and LSB reception power off Display software version 194 when turn power on MODE A PRESS Steps forward through enabled modes menu Steps backward through modes to enable disable T PRESS CW Toggles between USB and LSB reception A B PRESS Copy the current VFO settings into the secondary VFO A B PRESS Swap the current and secondary VFO settings KEYER PRESS Toggle CW keyer on off manual vs space assisted keying CLAR PRESS Allow offset of receive frequency with MAIN dial FAST PRESS Toggle increase in frequency steps for both dials LOCK PRESS Lock frequency see details to avoid accidental change SHIFT PRESS Shift the intermediate frequency IF pass band DSP SEL TURN Small kHz steps in frequency see Table 5 100 KHx steps in frequency may be adapted to set CW side tone CW speed 1 mHz steps mic gain or rf power MEMORY single channel steps single groups steps DSP Step values for selected filter shown by gt MENU Step through list of adaptable items MENU Step through allowed values fore individual items blink PRESS Toggle between small and larg
11. 00 milliseconds in 100 msec increments Set the hang time for the VOX circuitry VOXGAIN default 50 out of 1 100 Set the gain of the VOX circuit This may be done while transmitting 8 Procedural Uses I have included some operational notes to show how I currently use the system It is best to start with the shift centered ATT off IPO off the RF gain full on unless you are doing scanning and the AF gain so the noise is not to high 8 1 CW Setup No Tam not going to repeat the whole manual here There are too many permutations and combinations I am assuming you have adapted the CW parameters the way you want them The first time for straightforward communication 25 YAESU HF 50 mHz Transceiver FT 450 User s Manual 1 Set theshift ATT IPO RF gain and AF gain as shown in section 8 2 Select the band 3 Set the mode as CW 4 turn the keyer on 5 Turn BK IN on 6 Set the DSP parameters the way you think you want them and 7 Select a good starting frequency 8 Save this setting in the channel memory and remember where you put it You are now ready to go Either dial in the frequency you want to initiate communications or dial to look for someone calling Then next time you want to start up on the same band 1 Set theshift ATT IPO RF gain and AF gain as shown in section 8 2 Restore the memory channel for this setting If you plan to change frequency nudge the MAIN dial to enter M_TUNE Either
12. 7 7 Adaptation of repeater comin dd aa oma ease tees 24 7 8 Adaptation of Data communis 25 7 9 Adaptation of RTTY communication scsg es csas ceca ess casa case voy cao gednsestecesaceueaduess eas nace hese 25 LAD Adaptation of VOX Operation idol 25 8 Procedural Us s ld a ii 25 8 1 CW Sepi aede ia dt E a A AN 23 8 2 SSB SP Acad 26 8 3 Antenna VEA A A ee ee 27 8 4 CW Tranh ees nenei dc dion 27 9 Acronym Glossary AAA A IN 28 Table of Tables O 3 Table 2 Communication eS 4 Table 3 Transceiver Bad adds 5 Table 5 Base frequency step size for Controls sesesesessesssesssssssesesssesesesesesesesesesesesesesesesesesesesesesesesesee 5 Table 6 Band Width Filter Settings icccsccsescevseecssadeccetassdevsscagedacd codsesesedecgedacadendeddaedacdcadeeveesebocss 9 Table 7 Memory Channel Numbers add o 12 Table 8 Contents of Each Memory Chameleon 13 Table 9 20 Unique Assignable Button Functions sesssssseessssssssssssesesesssesesesesesesesesesesesesesesesesesesee 17 Table 10 8 Assignable shortcuts of F followed by an existing buttons 0 0 0 0 eee ee eeeeeeeeeeeeeeeeeeees 17 Table 11 22 Duplicate Button PunChiOnss ta ai 18 Table 12 Miscellaneous redundant or useless function eeeeeeseeseesesssessssssssesesesrsesesesesesesesesesesesesee 18 Table 13 Adaptable Parametros 20 Table 14 CTCSS tone frequencies iz wi Gisele Got neta ond neta Gu lacas 21 E YAESU HF 50 mHz Transceiver FT 450 Us
13. ENU F held for 1 second Open the adaptation menu DIMMER METER DIM Enable setting of display brightness by DSP SEL knob HOME HOME Recall the home favorite memory Table 10 8 Assignable shortcuts for f press of existing buttons NAME BUTTON FUNCTION FAST FAST Toggle increase in frequency steps for both dials DSP DSP Step DSP contour notch digital noise reduc width OFF ATT IPO ATT IPO Step through combinations of ATT and IPO off and on T PRESS CW Voice tone to compare with CW tone to spot NB NB Toggles noise blanker AGC AGC Step automatic gain control through auto fast slow T PRESS Turn off automatic gain control MODEDN MODE Y Steps forward through enabled modes T PRESS CW Toggles between USB and LSB reception MODEUP MODE A Steps forward through enabled modes T PRESS CW Toggles between USB and LSB reception DSP SEL DSP SEL Toggle between small and large steps in frequency KEYER KEYER Toggle CW keyer on off manual vs space assisted keying CLAR CLAR Allow offset of receive frequency with MAIN dial BANDDN BANDY Steps forward through enabled bands BANDUP BANDA Steps backward through enabled bands A B A B Copy the current VFO settings into the secondary VFO A B A B Swap the current and secondary VFO settings LOCK LOCK Lock frequency see details to avoid accidental change TUNE TUNE Toggle enable disable of automatic antenna tuner V M V M Toggles frequency control between VFO and memory system STO STO Copies operating data i
14. P SEL button again to stop the MENU blinking When you are done changing parameters t press the Fw button to exit MENU operations There are 7 exceptions to the above procedure The exceptions are BCN TXT BEEP VOL CWSPEED CWSTONE MEMTAG MY BAND and MY MODE The procedures for those exceptions will be discussed later in this section EXT MENU When EXT MENU is turned off only the 16 most used parameters are presented The parameter names are in alphabetical order except EXT MENU in a continuous loop to expedite finding the right parameter Since you may have to extend the menu to all 62 parameters EXT MENU is place before the alphabet and a beep sounds when it is selected ees ene tee 005 _ BCNTXT Beacontext bh 006 _ BEEPTON Beeptone 880 Hz 440 880 1760Hz 009 CATTOT CAT time out time 10 10 100 1000 3000ms 18 YAESU HF 50 mHz Transceiver FT 450 User s Manual NAME CATRATE CWPADDL CWSPEED CWSTONE CWTRAIN FUNCTION CAT baud rate Clear DIAL SEL Clock shift Disp contrast CW auto mode CW BFO CW delay CW key reverse CW break in delay CW paddle CW pitch CW speed CW side tone CW training CW weight Data display Data mode Dial step size VOX switch level Emergency hold time for t press Lock mode DEFAULT 4800 DIAL OFF OFF USB 250 NOR 15 20 ER 5 5 20 25 30 msec KEY MIC 700 400 500 600 700 800 Hz N rere FIXI0oLNKS Numeric 30 fa
15. Transceiver FT 450 User s Manual The FT 450 attempts to maintain a constant audio level assuming the signal is strong enough In general we want the Automatic Gain Control AGC to respond quickly during CW or DATA transmissions However when speech is involved we want the system to react more slowly so that voice inflections can be heard Status of the AGC control is shown on the upper right of the display Pressing the AGC button to the left of the BAND Y button will step from AUTO to FAST or from FAST to SLOW or from SLOW to AUTO If you t press the AGC button the system will disable or enable the AGC For most uses simply leave the AGC set to AUTO and the FT 450 will set the AGC speed according to the current receive MODE see next section 3 4 5 8 Radio Frequency Volume Control In most cases the gain or squelch is turned full on by rotating the SQL RF GAIN knob fully to the right The signal strength meter readings are only accurate in the full on position The SQL RF GAIN knob may also be adapted to act as a squelch muting the sound when the signal is below a set level and or pausing a scan operation when sufficient signal is present 3 4 6 Audio Volume Control No surprises here Adjusting the audio for the most comfortable sound by rotation of the AF GAIN knob sets the volume Turning to the right makes most sound louder The system beep volume BEEPVOL alerting the user of syste
16. X sssessesseseessssesssssesesssereessereesssseessssees 11 A COW Break Merienne PIN 11 ALA D ts O 11 4 2 Met t arn a ea dis 11 4 3 Automatic Antena Li ae a n a aeaeaei aneis 12 Channel Memories A E AA AAA AA tod 12 5 1 AS EA A O AN 12 5 2 Tuning of the VFO Setup Memoria AA iris 13 5 3 Band VFO Setup Memory innseas n re A A a 14 5 4 A ETETA A E E E AE AT E EET 14 5 5 Quick Menor LA A A AAA AA 14 5 6 Channels Memotles vesical dad idad 15 Sol AL coe taro pation une tty sash signs ncteas enna De died athe Seads acts eat Gotetedidy Oak ah Gasadh toa a aaa teas 15 5 602 O do cad 15 3 027 Removal A E iia 15 SOA da slds 15 5 7 VFO Memory Scanning ai lid lia 16 YAESU HF 50 mHz Transceiver FT 450 User s Manual 5 8 Programmable Memory scanning dui did id adds 16 a a A O LN 16 6 1 Display Brightness aa iii 16 6 2 Semi autom tic KE ai 16 6 3 Custom S Witchi heh a AO E ae aki ote 16 T Adaptation Mer aa ARA EA A DD ie Sa ee oda awd 18 7 1 Transceiver function operational parameters e eeeesseessssesessssseseseseseseseseseseseseseseseseseseseses 20 7 2 Tran eiver COM OIG A E OS 21 7 3 Computer Aided Transceiver CAT Operation coooccconncccnonoccnnncncnnncncnnnnncnoncnonnnccononcnnnnnnnos 22 7 4 Adaptation of CW communication ssssesssessesesesesseeesseessttssresseeesseetsstesstesstesseessseesseeesseest 22 7 5 Adaptation to exclude bands and anodes AA an a Baw oee 24 7 6 Adaptation for microphone iia lanes shane 24
17. YAESU FT 450 FT 450AT Users Manual Authors Message When I started this project I did so thinking that the Yaesu Manual was too confusing and hard to learn from Besides writing a User s Manual is a great way to learn any system Well I have to say I was wrong about the first item It turns out the Yaesu Manual is very good It is just that the FT 450 is a very complex machine I continued with the effort because my second reason is still valid And I wanted a shorter reference manual structured closer to the way I think to provide myself with a slightly different perspective of this impressive machine You will find that this is structured to my machine I do not have the enhanced microphone a linear amplifier to boost up the power and as yet I do not have the software in my computer to drive RTTY packet or slow scan video Where Yaesu s version of the manual gives explicit instructions on an entire task I have tried to break it down to functional procedures and presume that the reader will learn these basic procedures so that I do not have to spell out the specifics of every keystroke over and over again The only area covered by this document that was not clear in the Yaesu manual is found in section 5 2 where I discuss the interaction between M TUNE VFO A and VFO B 1 2 YAESU HF 50 mHz Transceiver FT 450 User s Manual Table of Contents A a a ties 1 Controls sinrin eet E aaa oa he OI A E ADA ag tel EI ileal
18. able 12 can be assigned to the FST button P M UP default UP out of Table 9 Table 10 Table 11 or Table 12 Adaptable button on some microphones One of 53 functions shown in Table 9 Table 10 Table 11 or Table 12 can be assigned to the UP button 7 7 Adaptation of repeater communication RPT default SIMPLEX out of SHIFT SIMPLEX or SHIFT Set repeater shift direction RPT SFT defai t 100 kHz for HF 1 mHz for 6 meter out of 0 00 99 99 mHz Set magnitude of the repeater shift on the 28 or 50 mHz bands 24 YAESU HF 50 mHz Transceiver FT 450 User s Manual 7 8 Adaptation of Data communication D DISP default 0 Hz out of 3000 3000 Hz DATA mode operation display offset for USER L or USER U D TYPE default RTTY out of RTTY USER L or USER U Define DATA mode DIG VOX default OFF out of OFF and 1 100 Set the VOX input level for DATA mode 7 9 Adaptation of RTTY communication RTY SFT default 170 Hz out of 170 200 425 850 Hz Set the frequency shift for FSK RTTY operation RTY TON default 2125 Hz out of 1275 Hz and 2125 Hz Set the mark tone for RTTY operation RTYRPOL default NOR out of NOR and REV Set the mark or space polarity for RTTY reception NOR normal and REV reverse RTYTPOL default NOR out of NOR and REV Set the mark or space polarity for RTTY transmission NOR normal and REV reverse 7 10 Adaptation of VOX Operation VOX DLY default 500 milliseconds out of 100 30
19. am fqys 1 8 MHz 30 KHz 33 MHz 1 8 MHz 2 0 MHz 3 5 MHz 30 KHz 33 MHz 3 5 MHz 4 0 MHz 7 0 MHz 30 KHz 33 MHz 7 0 MHz 7 3 MHz 10 MHz 30 KHz 33 MHz 10 1 MHz 10 15 MHz 14 MHz 30 KHz 33 MHz 14 MHz 14 35 MHz YAESU HF 50 mHz Transceiver FT 450 User s Manual BAND RANGE AMATEUR RADIO BAND 18 MHz 30 KHz 33 MHz 18 068 MHz 18 168 MHz 21 MHz 30 KHz 33 MHz 21 MHz 21 45 MHz 24 MHz 30 KHz 33 MHz 24 89 MHz 24 99 MHz 28 MHz 30 KHz 33 MHz 28 MHz 29 7 MHz 50 MHz 33 MHz 56 MHz 50 MHz 54 MHz Table 3 Transceiver Bands 3 3 VFO Variable Frequency Oscillator The display shows the current frequency in 10 Hz increments left field is MHz mid field is KHz The desired frequency is selected by rotating the DSP SEL knob 24 steps per revolution Tabke 5 shows the incremental step size Factory defaults are highlighted Press the DSP SEL knob to blink the left 3 digits of the frequency display and the DSP SEL knob now moves in 100 kHz increments changing only those digits Pressing the DSP SEL knob again or pressing any button or moving the MAIN dial stops the blinking and the DSP SEL knob action returns to the smaller increment size The MAIN large unlabeled dial 100 steps per revolution allows fine tuning of the frequency The MAIN dial is by default disabled in AM or FM mo
20. arrow left nominal mid to wide right The actual band width gt gt gt gt IF BANDWIDTH BANDWIDTH YAESU HF 50 mHz Transceiver FT 450 User s Manual depends on the communications mode as shown in Table 6 MODE NARROW NOMINAL WIDE CW DATA 500 Hz 1 8 kHz 2 4 kHz USB LSB 1 8 kHz 2 4 kHz 3 0 kHz AM 3 0 kHz 6 0 kHz 9 0 kHz FM 2 5 kHz S OkHz Table 6 Band Width Filter Settings 3 4 3 5 Filter Shift Desired Signal The digital signal processor center frequency can ra always be shifted with the SHIFT knob The position of that center frequency is shown on the lower left of the display Note The shift value is not saved as part of the VFO setup BANDWIDTH BANDWIDTH Normal CW Carrier 3 4 4 CW Reverse USB Signal The default CW reception injects the beat frequency in the upper sideband of the CW carrier In some cases a near signal may be filtered out by switching to the lower sideband of the CW carrier The sideband for CW reception can be toggled by a t press of either MODE Y I 1 i CW Reverse gt Carrier i or MODE A pe 1 QRM 3 4 4 6 CW Spotting RX Passband gt When fine tuning a CW signal it is sometimes helpful to zero beat with your own signal T press the ATT IPO button to sound your signal on top of the received signal 3 4 5 Radio Frequency Gain 3 4 5 7 Automatic Gain Control YAESU HF 50 mHz
21. at channel is copied into the M TUNE memory and the change applied to the M TUNE memory M TUNE is now the primary channel Neither the memory channel nor VFO A nor VFO B have been changed at this point If either VFO A or VFO B is selected to control the primary VFO any changes in the parameters of Table 8 above are made directly to VFO A or VFO B respectively When either of these VFOs is associated with the primary channel the other acts as the secondary channel The primary channel provides all the settings for reception as well as those for direct transmission The secondary channel provides parameters for transmission during SPLIT transmission There are two buttons available to Primary VFO Secondary VFO VFO A A B VFR B or or VFO B A B VFO A swap actual VFO change the contents of the secondary channel in the FT 450 1 If you press the A B button the contents of the primary VFO are copied to the secondary VFO As YAESU HF 50 mHz Transceiver FT 450 User s Manual 2 If the primary VFO is M TUNE and you press the A B button the contents of the primary VFO are swapped with the contents of the secondary VFO 3 If the primary VFO is one of the memory channels then the contents of the secondary VFO are copied into M TUNE the contents of the memory channel is copied into the secondary VFO and M TUNE becomes the primary VFO 4 If the primary VFO is either VFO A or VFO B and you press the
22. ault 5 seconds out of 1 10 seconds in 1 second increments Sets the delay time after signal lost before scan resumes STBY BP default OFF out of ON or OFF Transmit a beep at end to inform the receiving station that your transmission is complete TONE F defaule 88 5 Hz out of Table 14 below Sets the CTCSS tone frequency 67 0 69 3 71 9 74 4 77 0 797 82 5 85 4 885 91 5 94 8 97 4 100 0 103 5 107 2 110 9 114 8 118 8 123 0 127 3 131 8 136 5 141 3 146 2 151 4 156 7 159 8 162 2 165 5 167 9 171 3 173 8 177 3 179 9 183 5 186 2 189 9 192 8 196 6 199 5 203 5 206 5 210 7 218 1 225 7 229 1 233 6 241 8 250 3 251 4 Table 14 CTCSS tone frequencies Hz TOT default OFF out of OFF 1 20 min Selects the time out timer if mic switch held too long 7 2 Tranceiver Controls A amp F DIAL default DISABLE out of ENABLE DISABLE Enables and disables the MAIN dial in AM and FM modes CLAR default DIAL out of DIAL OR SEL Determines whether the MAIN dial or DSP SEL knob will adjust the clarifier offset CONT default 10 out of 1 24 Adjusts the display contrast DIALSTP default SSB or CW is 10 Hz and AM or FM is 100 Hz from see Table 5 Sets the MAIN dial step size for the current mode KEYHOLD default 1 0 second out of 0 5 1 0 1 5 2 0 seconds Sets amount of time before but
23. ault RF GAIN out of SQL or RF GAIN Select the configuration for the panel SQL RF knob 7 3 Computer Aided Transceiver CAT Operation CAT RTS default ENABLE out of DISABLE or ENABLE Enables or disables the request to send RTS port of the CAT jack CAT TOT default 10 milliseconds out of 10 100 1000 3000 milliseconds CAT time out timer for a single message If a message exceeds this time the input will be disabled CATRATE default 4800 bits per second out of 4800 9600 or 38400 bits per second CAT baud rate SQL TYP default OFF out of OFF CTCSS encoder CTCSS encoder decoder tone squelch Selects the tone encoder and or decoder mode 7 4 Adaptation of CW communication CW AUTO default OFF out of OFF or ON Enable key jack to automatically allow CW operation when USB or LSB selected CW BFO default USB out of USB LSB or AUTO Select CW carrier injection location If AUTO is selected the system will automatically use LSB below 10 mHz or USB above 10 mHz CW DLY default 250 milliseconds out of FULL or 30 3000 milliseconds sI YAESU HF 50 mHz Transceiver FT 450 User s Manual Receiver recovery time with semi break in operation CW KEY default NOR out of NOR or REV Keyer wiring configuration In NOR the plug tip produces dots and the plug ring produces dashes In REV the plug tip produces dashes and the plug ring produces dots CW QSK default 15 milliseconds out of 15 20 25 or 30
24. be released by pressing LOCK again In addition to the display the FT 450 is able to announce the current frequency through the speaker or headset To hear the frequency f press the VOICE button 2 upper button from the right Note Small changes in the receive frequency under 10 kHz my also be achieved by use of the clarifier See section 4 1 1 of transmission for details 3 3 1 Clarifier The receive frequency can be set up to 9 99 kHz different from the transmit frequency This is toggled on and off by pressing the CLAR button located near the bottom middle of the front panel When activated the word CLAR shows on the right side of the display with the offset shown below it replacing the M TUNE VFO A or VFO B on the display The offset value may be changed with the MAIN dial Note that the offset control may be re assigned to the DSP SEL knob in adaptation using the MENU functions as described later The system will remember the offset value even when CLAR is turned off To zero the offset t press the CLAR button while the clarifier is turned on The offset will also be set to zero if the MAIN dial is inadvertently turned when the CLAR is turned off 3 3 2 Split Frequency Operation The FT 450 Transceiver is capable of operating on two frequencies one for transmission and another for reception Moreover there is no restriction that the two VFOs operate on the same band or
25. by pressing the TUNE button located just below the right edge of the display When the tuner is on the word TUNER is displayed just above the start of the frequency display To operate the automatic antenna tuner t press the TUNE button for one second The TX will light up during the operation and you might hear the tuner operation for a couple of second If the operation fails usually because of excessive SWR the ee antenna symbol at the start of the diagram on the display will flash until the tuner is either turned off or run successfully 5 Channel Memories The FT 450 contains 508 memory channels as well as M TUNE VFO A VFO B QUICK and HOME The memory channels may be addressed one of two ways per Table 7 according to the setting in adaptation Group Memory OFF Group Memory ON MEM 001 MEM 050 M 01 01 M 01 50 MEM 051 MEM 100 M 01 01 M 01 50 MEM 101 MEM 150 M 01 01 M 01 50 MEM 151 MEM 200 M 01 01 M 01 50 MEM 201 MEM 250 M 01 01 M 01 50 MEM 251 MEM 300 M 01 01 M 01 50 MEM 301 MEM 350 M 01 01 M 01 50 MEM 351 MEM 400 M 01 01 M 01 50 MEM 401 MEM 450 M 01 01 M 01 50 MEM 451 MEM 500 M 01 01 M 01 50 MEM P1L MEM P2U M 11 1L M 11 2U MEM EMG M 12 EM US5 001 US5 005 M 13 01 M 13 05 Table 7 Memory Channel Number 5 1 Memory Content All of the configuration data specific to a single
26. channel is known as the VFO setup data Absent from this data are the current functional status such as transmit or the transceiver state such as menu The contents are described in Table 8 The state of the clarifier CLAR is also maintained between working and band memories but not in the channel meories A VFO setup does not include the position of any knobs In addition it does not include the state of TUNER BUSY TX KEYER VOX BK IN P BACK FAST LOCK MENU SPLIT and F lt 12 YAESU HF 50 mHz Transceiver FT 450 User s Manual Operating Mode Operating Frequency Attenuation Status IPO preamplifier Status CONTOUR setting DSP Notch filter NOTCH setting DSP Noise Reduction DNR setting DNR Reduction algorithm setting Bandwidth setting Repeater Shift setting CTCSS Tone Frequency Table 8 Contents of Each Memory Channel 5 2 Tuning of the VFO Setup Memory The FT 450 Transceiver maintains three active VFO setups M TUNE VFO A and VFO B One of these three setups known as the primary VFO is indicated on the bottom right hand corner of the display The operator has the ability to directly change parameters in the primary VFO setup If a memory channel is selected to control the primary VFO its name shows on the bottom right hand corner of the display Should the operator decide to change one of the parameters see Table 8 above the entire VFO setup of th
27. des but may be enabled by adaptation MODE S DSP SEL KNOB MAIN DIAL CW LSB USB DATA 1 0 2 5 5 0 kHz 1 10 20 Hz AM 2 5 5 0 9 0 10 12 5 25 kHz 100 200 Hz FM 5 0 6 25 10 12 5 15 20 25 50kHz 100 200 Hz Table 5 Base frequency step size for controls Note By default MAIN dial is inoperative for AM and FM modes unless enabled by adaptation To change the frequency step size of the DSP SEL knob f press the STEP SPLIT just above Fw The current step size will show on the bottom right of the display Change the step size value by rotating the DSP SEL knob When the correct value is displayed press the STEP SPLIT button to exit that state Press the FAST button to the left bottom of MAIN dial to increase the speed of frequency selection The word FAST will be highlighted on the display the DSP SEL increments will be doubled and the MAIN dial increments will be increased by a factor of 10 Pressing FAST again to extinguish the FAST highlight and returns both knobs to their set increments The current frequency may be locked to avoid inadvertently changing it To toggle the lock function press the LOCK button to the right of the MAIN dial When locked the word LOCK will appear YAESU HF 50 mHz Transceiver FT 450 User s Manual above the right end of the frequency display The frequency lock may
28. dial in the frequency you want to initiate communications or dial to look for someone calling 8 2 SSB Setup The first time for straightforward communication 1 Set theshift ATT IPO RF gain and AF gain as shown in section 8 2 Select the band 3 Set the mode to USB above 10 mHz or LSB below 10 mHz 4 turn the VOX on 7 Set the DSP parameters the way you think you want them and 8 Select a good starting frequency 26 YAESU HF 50 mHz Transceiver FT 450 User s Manual 9 Save this setting in the channel memory and remember where you put it You are now ready to go Either dial in the frequency you want to initiate communications or dial to look for someone calling Then next time you want to start up on the same band 1 Set theshift ATT IPO RF gain and AF gain as shown in section 8 2 Restore the memory channel for this setting If you plan to change frequency nudge the MAIN dial to enter M_TUNE Either dial in the frequency you want to initiate communications or dial to look for someone calling 8 3 Antenna Testing It is very convenient to test the standing wave ratio of the antenna as seen by the transceiver right from the transceiver itself Adapt the C S function to SWR Turn off the antenna tuner Select the desired frequency Then simply press the VOICE C S button and read the SWR on the meter The transceiver will drive the antenna with about 10 watts and automatically switches the meter to SWR If the r
29. e METER DIM III button to step through these levels The current level shows on the lower right of the display unless it is O in which case the display is blank Rotating the DSP SEL knob will then change the level Press the METER DIM III button to save the new value and resume operation Warning It is recommended that the display remain at full 4 brightness People have reported a hum on the transmitted audio when the value is set lower 6 2 Semi automatic Keyer The FT 450 contains a semi automatic keyer for CW transmission It has the advantage and to some disadvantage of making the code stream more uniform The relative size of dots dashes and spaces a standard size for a given code speed Press the KEYER button to toggle the keyer on or off Input to the keyer can be adapted for either a straight key or paddles See adaptation for parameters associated with CW 6 3 Custom Switch The manual says that the C S button will act as a shortcut to one of 52 functions However there are only 20 unique functions that are not duplicates of either press f press or t press of existing buttons or knobs The unique functions are shown in Table 9 NAME FUNCTION MONI Pipe audio signal through speaker or headset P B Activates the Monitor function PLAY1 Send CW beacon text 1 PLAY2 Send CW beacon text 2 PLAY3 Send CW beacon text 3 QSPL Activate quick SPLIT opera
30. e aed RTIY SBB 10 FM 100 OFF FREQ PANEL ALL OFF TAG OFF Neer gt LOW NOR HIGH ER N D D FREQ Memory group Alpha tags for chan MIC equalizer MIC gain MIC auto scan Hide unused bands Hide unused modes MIC down sw prog MIC fast sw prog MIC up sw prog Meter peak hold Panel custom switch Quick split frequency RF power Repeater shift direction Repeater shift offset RTTY shift RTTY tone RTTY RX polarity RTTY TX polarity Scan resume Select dial mode SQL type SQL RF gain NOR LOW NOR HIGH DWN 1 SIMPLEX HF 0 1 50M 1 0 1 170 200 425 850 2125 Hz ME 5 00 kHz GAIN TYTPOL CN RES ELDIAL QL TYP QL RFG NAME CATRATE CWPADDL CWSPEED CWSTONE _ CWTRAIN _ MEM GRP __ MEM TAG MICGAIN _ MICSCAN__ PM DWN__ PM FST PEAKHLD RFPOWER _ zlolsSlelZizZivis lolelelz olo O z Sig a S Z US Z Z Z 19 YAESU HF 50 mHz Transceiver FT 450 User s Manual NAME FUNCTION DEFAULT VALUES STBY BP Standby beep ON OFF 1060 TONE F 88 5 Hz see Table 14 67 254 1 Hz Table 13 Adaptable Parameters Note 2 O0 CWS sidetone 1 CW keyer spd 2 100KHz step 3 1MHz step 4 MIC gain 5 RF pwr 7 1 Transceiver function operational parameters APO default OFF out of 1 12 hours Selects the automatic power off time if no action taken BEEPTON default 880 Hz out of 440 880 1760 Hz Sets the tone of the transceiver beep alert to the user
31. e steps in frequency MEMORY Toggle between groups and individual memory numbers DSP Toggle type of filter on off sense magnitude see writeup MENU select menu item blink menu display for setting MAIN DIAL TURN Fine setting of frequency end memory mode 2 YAESU HF 50 mHz Transceiver FT 450 User s Manual CONTROL ACT STATE FUNCTION SQL RF GAIN TURN not squelch Analog setting of radio frequency gain squelch Analog setting of squelch level AF GAIN TURN Analog setting of audio frequency gain VOICE C S PRESS F Announce the frequency and mode in voice to operator Customer adapted function see Tables 9 10 11 12 MW V M PRESS F Memory write VFO setup to selected channel 1 out of 508 Copy memorized VFO setup into current VFO T PRESS power off Clear memory channels when power turned on HOME RCL PRESS F Copy preferred quick VFO setup into current VFO Copy quick VFO setup into current VFO FMW Copy current VFO setup into home channel menu In most cases the menu item restored to factory default blink T PRESS power on Reset adapt clear memory channels when turn power on VOX STO PRESS F Activate or deactivate voice activated transmission Copy current VFO setup into preferred quick memory STEP SPLIT PRESS F Toggle setting frequency step with DSP SEL knob Toggle operation using secondary VFO settings to transmit T PRESS Activate quick
32. eading is 3 0 or less then the antenna system is adequate for use with the built in antenna tuner Hint I found it convenient to set up a channel group with frequencies near the lower and upper ends of the bands I am interested in I can then test my multi band antenna s quickly selecting frequencies from that group 8 4 CW Training To practice sending simply set up for CW operation F press VOX STO to disable the BK IN function Any code sent with the key will now be audible through the speaker or headphones but no transmission will take place When you are done be sure to restore the BK IN function For CW reception training the FT 450 has a built in CW Training feature which sends random Morse Code five character groups via the sidetone heard in the speaker The groups may be numeric alpha or a mixture of both alpha and numeric characters This feature is a little strange as it is only available in MENU mode Simply enter MENU mode as you normally would for changing adaptation and select the CWTRAIN parameter If you followed the procedure in section 7 Adaptation you should now see the letter A N or M for alpha numberic or mixed respectively You can change that adaptation at any time with the DSP SEL knob While still in that mode menu blinking press the Fm button The random 5 code group will be heard through the speaker or earphones followed by a display of the 5 characters so you can check you work Repea
33. er s Manual a AGT USB i LAL ea iit SLOW 1 General The Yaesu FT 450 HF 50 MHz Transceiver is designed for Amateur Radio use It provides a general purpose receiver covering 30 KHz through 56 MHz The Transceiver range is broken into 10 Amateur Radio Bands and 1 general purpose band to cover the remaining high frequency spectrum The variable frequency oscillator VFO setup for each band is remembered individually as you switch bands The details of what makes up a VFO setup will be described when we get into the section on memory The transceiver allows communication in using side band continuous wave amplitude modulation frequency modulation and when computer driven a number of data modes 2 Controls The FT 450 front panel contains 24 push buttons 3 analog rotary dials 2 rotary digital dials a lighted display and three jacks The small rotary digital dial DSP SEL has 24 steps per revolution and also functions as a push button The large rotary digital dial has 100 steps per revolution A number of push buttons behave differently if held down for one second adaptable Since there are literally hundreds of settings possible on the FT 450 a button knob or dial may be used to control more than one function The less often changed values are set by a sequence of buttons and or dials For example if you press the Fm button 2 from right mid height button the letter F will illuminate on the display
34. er band and chose to disable it I then found that I could not access the 33 mHz through 60 mHz portion of the spectrum without first changing the adaptation after which I would change it back I solved the problem by setting up one memory channel in the upper portion of the spectrum By selecting that channel I can now access anywhere in that portion of the spectrum without changing adaptation 7 6 Adaptation for microphone MIC EQ default 0 out of 0 9 Set one of the DSP microphone equalizer values MICGAIN default NOR out of LOW NOR or HIGH Set the microphone gain Note in LOW setting the speech processor is turned off automatically Otherwise it is turn on automatically MICSCAN default ON out of ON or OFF Default scanning on DWN FST UP microphones May be replaced by PM_DWN PM UP below When off the frequency will scan DWN or UP as long as the button is held down and stop when the button is released If this parameter is set to ON if the DWN or UP button is held down for more than 1 second scanning will continue even after the button is released P M DWN default DOWN out of Table 9 Table 10 Table 11 or Table 12 Adaptable button on some microphones One of 53 functions shown in Table 9 Table 10 Table 11 or Table 12 can be assigned to the DWN button P M FST default N A out of Table 9 Table 10 Table 11 or Table 12 Adaptable button on some microphones One of 53 functions shown in Table 9 Table 10 Table 11 or T
35. for a 10 seconds period A beep will sound to confirm that the process was accepted 5 6 3 Removal To remove a channel press the MW V M button if the system is not AS already in memory mode Select the memory channel that you wish to remove as done i in memory channel restore above and f press the MW V M button Press CLAR to remove the data Confirm with the MW V M button The channel selection will revert to the first of that group or first channel if memory groups turned off Note If you make a mistake after the channel has been turned off the information is still there To restore the channel f press MW V M button select the channel with the DSP SEL knob press CLAR and press the MW V M button to confirm 5 6 4 Labeling Channels may have been adapted with an alphanumeric label up to 7 characters long to remind the operator what the channel was for If the channel label has been enabled in adaptation when the channel is selected you see the original channel number for 2 seconds before it is replaced with the label See section 7 1 in adaptation for MEM_TAG input 15 YAESU HF 50 mHz Transceiver FT 450 User s Manual 5 7 VFO Memory Scanning SCAN Initiates upward scanning of VFO frequencies or memOry chan 5 8 Programmable Memory scanning 6 System Controls 6 1 Display Brightness The display brightness may be set to one of 5 levels O through 4 F press th
36. ggle the VOX voice actuated transmitter switching system on or off when in USB LSB AM or FM modes When the VOX is active the VOX indicator will show on the display When VOX is active speaking into the microphone will cause the Transceiver to transmit Note MH 67 microphone not operative when button released 4 1 3 CW Break In F press the VOX STO button to toggle the break in key actuated transmitter switching system on or off when in CW mode When the break in is active theBK IN indicator will show on the display Break in should be on for CW transmission Turning off break in is useful for code practice 4 1 4 Data An external computer or device may command the transceiver to transmit rtty packet or other data 4 2 Meter During transmission one of the three parameters is monitored only one of 1 35 7 9 20 40 60 eee we Beem e Ee ew Eee Be O dB PO ALC or SWR titles will show on the display The parameters may be SwR 15 210 53 1050 20100W stepped through by pressing the METER DIM III button just above the AF GAIN knob They are PO Power Out ALC Automatic Level Control and SWR Standing Wave Ratio respectively lt fl YAESU HF 50 mHz Transceiver FT 450 User s Manual 4 3 Automatic Antenna Tuner The built in automatic antenna tuner will match the output through a 50 ohm line if the SWR of the antenna without the tuner is 3 1 or less The antenna tuner is toggled on or off
37. han other parameters After selecting BCN TXT with the DSP SEL knob we must add steps using the MAIN dial to select the first character 1 1 the DSP SEL dial to enable storing the MAIN dial to select a character from A Z 0 9 gt and the space character the DSP SEL knob to move on to the next character and so on If the text string is more than 40 characters but less than 79 characters set the 40 character to gt press the DSP SEL knob twice turn the MAIN dial to select the next character 2 2 and continue on If the text string is more than 79 characters but less than 118 characters set the final character of slot 2 to gt press the DSP SEL knob twice turn the MAIN dial to select the next character 3 3 and continue on Be sure to terminate the text string with the character le YAESU HF 50 mHz Transceiver FT 450 User s Manual 7 5 Adaptation to exclude bands and modes MY BAND MY MODE defaults ON all bands and modes out of OFF or ON To enable or disable the 10 bands shown in Table 3 GEN stays on or the 6 modes shown in table 2 we insert a step in standard adaptation procedure After selecting MY BAND or MY MODE we must pressg the BAND Y and BAND A or MODE Y and MODE A buttons to select the appropriate band or mode respectively before rotating the DSP SEL knob to set each band or mode to OFF or ON Hint I rarely use the 6 met
38. ion of the receiver section However Mode Band and VFO apply to the transmitter section as well 3 1 Communications Mode The FT 450 transceiver is designed to communicate using Lower Side Band LSB Upper Side Band USB Continuous Wave CW i e Morse code Data DATA Amplitude Modulation AM or Frequency Modulation FM Pressing either the MODE Y or MODE A will step through the available modes in the forward or reverse direction respectively These buttons are found to the right of the DSP SEL knob Any unwanted modes may be turned off in adaptation using the MENU functions described later Most user s will not need all of the communication modes shown in Table 2 When you get to the section on adaptation you will find that you can configure the system to skip any modes that are not needed MODE DESCRIPTION USB Upper side band LSB Lower side band CW Continuous Wave AM Amplitude Modulation FM Frequency Modulation DATA Radio teletype Packet Table 2 Communication Modes 3 2 Band Step through the bands using BAND A and BAND Y buttons on either side of the MAIN dial Only those bands enabled via the menu command will be selected The available bands are shown in Table 1 above Any unwanted bands may be turned off in adaptation using the MENU functions described later BAND RANGE AMATEUR RADIO BAND GEN 30 KHz 33 MHz none stores non h
39. lge T press the DSP SEL knob to flip between and upward or downward bulge Turn the DSP SEL knob to position the bulge over the different parts of the band pass 3 4 3 2 Notch Introducing a sharp notch in the band pass is achieved by the second press of the DSP button that causes the gt sign to be positioned next to the NOTCH graph Press the DSP SEL knob to toggles the filter off or on Turn the DSP SEL knob to position the bulge over the different parts of the band pass Note that the knob must be moved several steps before the notch will move noticeably 3 4 3 3 Digital Noise Reduction DNR BANDWIDTH Application of one of 11 different digital Noise Reduction DNR filters in the band pass is achieved by the third press of the DSP button that causes the gt sign to be positioned next to the DNR indicator Press the DSP SEL knob to toggle the DNR off or on Rotate the DSP SEL to select one of the filters which are indicated in the number of segments lighted by listening to which sounds best 3 4 3 4 Band Pass Width Desired Signal Desired Signal D A Without any other filtering the band pass is relatively flat for its band pass value with relatively steep drop off above and below that band The fourth push of the N DSP button causes the gt sign to be positioned next to the WIDTH graph on the display Turning the DSP SEL knob steps the filter from n
40. m warnings as well as CW side tone volume CWSTONE is set in adaptation Either may be set to a fixed volume or linked to the AF GAIN with a user selected offset in volume 3 4 7 Signal meter When not transmitting the meter in the upper left corner of the display shows the signal strength of the received signal Note that the value is only accurate when the SQL RF GAIN knob is turned full on all the way to the right 4 Transmitter The transmitter makes use of the mode band and frequency settings shown in 3 1 3 2 and 3 3 The current mode of transmission LSB USB CW AM FM or DATA is lighted in the display In 10 YAESU HF 50 mHz Transceiver FT 450 User s Manual addition if CW mode the display also shows whether the injected beat frequency is LSB or USB When the automatic antenna tuner is engaged the TUNER indicator is lighted As long as the system is receiving or squelch is open the BUSY indicator is lighted 4 1 Transmission When the system is transmitting the TX is lighted and the BUSY is not lighted If an attempt is made to transmit outside of the amateur radio bands the status area of the display lower right hand corner will show TX ERR and the TX indicator will not be lighted 4 1 1 Microphone Button The system will transmit whenever the side button on the microphone is pressed 4 1 2 Voice Activated Transmitter Switching VOX F press the VOX STO button to to
41. n what is called intercept point optimization IPO The RF amplifier gain is controlled by the automatic gain control AGC circuitry The signal is then mixed with the first local oscillator to produce an intermediate frequency of 67 899 mHz passed through a 10 kHz wide roofing filter and then passed through the first intermediate frequency IF amplifier The gain of the IF amplifier is also controlled by the AGC circuitry The amplified IF signal is mixed to produce a 24 kHz second IF The second IF signal is then converted through an analog to digital converter ADC Further filtering is then performed by the digital signal processor DSP The DSP then detects DET the signal and provides the AGC control The detected signal then passes through a digital to analog converter DAC to drive the speaker circuitry The operator has direct control of ATT IPO noise blanker NB several DSP filter properties AGC speed IF gain or squelch and audio frequency AF gain 3 4 1 RF Attenuation and Intercept Point Optimization IPO Filtering is done first by the ATT IPO button To reduce Na GD Cea FLT BES aac strong signals apply these filters Each time the ATT IPO button is pressed it advances through the loa Hon HH mm sequence SLOW ATT off IPO off no attenuation input preprocessor active ATT on IPO off 20 db attenuation input preprocessor active ATT off IPO on no attenuation input processor off ATT on IPO
42. nto quick memory bank QMB memory SPLIT SPLIT Activate split frequency operation between VFO A and VFO B T PRESS Activate quick SPLIT operation SCAN SCAN Initiates upward scanning of VFO frequencies or memOry chan 17 YAESU HF 50 mHz Transceiver FT 450 User s Manual NAME BUTTON FUNCTION MTR MTR DIM Change the meter function in the transmit mode RCL RCL Recall the quick memory bank memory Table 11 22 Duplicate Button Functions NAME DIAL FUNCTION DOWN DSP SEL to left Decreases the VFO frequency or memory selection by 1 step UP DSP SEL to right Increases the VFO frequency or memory selection by 1 step N A No function disables the button USER For future expansion do not select Table 12 Miscellaneous redundant or useless function 7 Adaptation Menu If you t press the Fw button the display will show the word MENU to the right of the frequency readout Below the word MENU is the name of one of 62 adaptable parameters You may then sequence through the parameter names by turning the DSP SEL knob When you find the desired parameter press the DSP SEL knob The word MENU will then blink and the lower right now shows the current value of the parameter With most parameters you then turn the DSP SEL until the desired value is displayed In most cases pressing the HOME RCL button will restore the factory default Then press the DS
43. tedly press of the Fw button for new groups as long as you wish When you are done be sure to exit the selection and MENU mode in the normal way 0 a YAESU HF 50 mHz Transceiver FT 450 User s Manual 9 Acronym Glossary AGC AF AM ATT CAT CPU CTCSS CW DNR DSP FM FSK HF IF IPO LCD LSB MIC QMB RTS RTTY SNR SQL SWR TX USB VFO VOX Automatic gain control Audio frequency Amplitude modulation Attenuation Computer aided transceiver Computer processor unit Continuous tone coded squelch system Continuous Wave Digital noise reduction Digital signal processor Frequency modulation Frequency shift keying High frequency Intermediate frequency Intercept point optimization Liquid crystal display Lower side band Microphone Quick memory buffer Request to send Radioteletype Signal to noise ratio Squelch Standing wave ratio Transmit Upper side band Variable frequency oscillator Voice operated transmission 28
44. tion SPOT Generate a CW spot tone only in CW mode SQLOFF Opens the squelch SWR Transmits a 10 W CW carrier to check the standing wave ratio TXW Monitor the transmit rather than receive frequency when in SPLIT mode VCC Display the power supply voltage VOICE2 Same as VOICE except adds S meter reading VMIMONI Play back message in voice memory 1 16 YAESU HF 50 mHz Transceiver FT 450 User s Manual VMIREC Store the voice message in voice memory 1 VMITX Transmit the voice message in voice memory 1 VM2MONI Play back message in voice memory 2 VM2REC Store the voice message in voice memory 2 VM2TX Transmit the voice message in voice memory 2 Table 9 20 Unique Assignable Button Functions The other assignable functions may not be as useless as they seem If you happen to have the optional MH 31 or MD 100 microphones it might be useful to assign redundant functions to the microphone buttons Each of the custom switch functions may also be assigned to any of those three buttons through adaptation NAME BUTTON FUNCTION VOICE VOICE Announce the current frequency and mode MW MW Copies operating VFO data into current memory channel VOX VOX Activate the VOX voice actuated transmitter switching sys STEP STEP Enable setting freq step used by DSP SEL knob PMS PMS Engage programmable memory scan M
45. ton t press functions take place LOCKMOD default FREQ out of FREQ PANEL ALL Set the lock mode evoked when the LOCK button is toggled Those modes are FREQ PANEL and ALL Regardless of which LOCKMOD is selected the following functions will be locked when LOCK is engaged MAIN dial DSP SEL knob FAST BAND A B A B MW V M HOME RCL PMS SCN SPLIT and STO In addition the following are added For FREQ STEP the C S functions QSPL DWN FAST and UP and the microphone buttons UP DWN and FAST DT YAESU HF 50 mHz Transceiver FT 450 User s Manual For PANEL DSP ATT IPO NB AGC METER MODE KEYER CLAR and STEP For ALL DSP ATT IPO NB AGC MODE KEYER CLAR VOX STEP the C S functions MONI N A P B PLAY1 PLAY2 PLAY3 SWR VCC QSPL DWN FAST and UP and the microphone buttons UP DWN and FAST PNL C S default VCC out of Table 9 Table 10 Table 11 or Table 12 One of 53 functions shown in Table 9 Table 10 Table 11 or Table 12 can be assigned to the VOICE C S key SELDIAL default 100 kHz out of CWSTONE CWSPEED 100KHZ 1MHZ MICGAIN RFPOWER Sets the secondary function if the DSP SEL knob is pressed TUNER default INT ATU out of ATAS EXT ATU INT ATU INTRATU F TRANS Sets the auto antenna and antenna tune M TUNE default ON out of ON or OFF Allows copy and tuning from memory channel Does not alter the memorized channel unless you write 1t back SQL RFG def
Download Pdf Manuals
Related Search