Australis 26K Scanner User Manual
Contents
1. do this is as follows This example locks out memories 7 8 9 and 0 on BANK 1 Thus when you scan BANK 1 only the frequencies in memories 1 2 3 4 5 and 6 will be scanned for a signal e From Manual Single Frequency Mode e To lock out a memory press the 0 ee key e The LCD screen will now read e Press SAVE the LCD now omis for a BANK number e Press the Bank number which you want to use 1 e The LCD now prompts for a MEMORY number e Press the first Memory number which you want to lock out 7 Having locked out Memory 7 on Bank 1 we now must also lock out the other 3 unused memories in Bank 1 Repeat the process below until all unused memories are locked out e Press SAVE the LCD now prompts for a BANK number e Press SAVE again as the current Bank number is already Bank 1 e The LCD now prompts for a MEMORY number e Press the next Memory number which you want to lock out e g 8 then 9 then 0 Now when BANK 1 is scanned only memories 1 through to 6 will be scanned for a signal To unlock a memory for usage program a valid frequency then store that frequency into the required memory you wish to unlock b Recall Function A frequency is recalled from memory by pressing the RECALL key Once recalled from memory the frequency can be fine tuned to optimise the signal if required then saved to the same memory using the Save function described above Alternatively a2. intrusion of dust dirt or spray All external joints are either overlapping or sealed Reverse printed polycarbonate panel incorporating a display window and 16 keys Surface mount on double side plated through FR4 board Re flow soldered Specifications may alter without notice Page 11 Rev M
3. then Banks 2 through to 9 then Bank 0 last if also selected Within a Bank scanning starts with Memory if not locked out and cycles through to Memory 9 then 0 if also not locked out looking for a signal While the receiver is scanning the audio signal heard will depend on the setting of the Squelch function and the signal level received if Squelch is ON While scanning for a signal the current Bank AND Memory number AND its Frequency are indicated on the display with the Memory number being to the right of the SCAN message in the lower line of the upper left window of the display When Memory number zero if not locked out or the highest number valid Memory has been used and a signal has been received that has NOT exceeded the preset level on that frequency only if in H HOLD mode the next selected Bank if more than one bank selected will be scanned Thus the scanner continuously rotates through all the valid Memories in all the selected Banks Page 8 Rev M Australis 26K Scanning Receiver MEMORY SCANNING MODE cont STARTING SCANNING cont While scanning pressing either the UP ARROW or DOWN ARROW fine tune keys will move the scanner on the next or previous memory in the scan sequence Keeping these keys held will cause the scanner to continuously move forward or backward through the scan sequence until the keys are released Thus you can quickly move on to another memory number within selected banks
4. totally new frequency can be stored into the memory just recalled if you wish to overwrite the previous value The Bank and Memory numbers to be recalled are selected in the same way as for the Save function with the Bank and Memory numbers displayed being those used for the last Save OR Recall function Pressing RECALL retains the current Bank or Memory number If during the Save or Recall sequence more than twenty seconds elapse without a key entry the operation is cancelled the display clears and it now displays the last frequency that was entered in the Manual Single Frequency Mode Page 5 Rev M Australis 26K Scanning Receiver MEMORY OPERATION cont b Recall Function cont This is an example to recall the frequency programmed into Memory 5 of Bank 1 e Press RECALL the LCD now prompts for a BANK number e Press the Bank number in which you want to recall 1 e The LCD now prompts fora MEMORY number e Press the Memory number in which you want to recall 5 The LCD will display the last frequency stored in Memory 5 of Bank 1 If the LCD displays then that memory location has been locked out from being scanned If a memory has been programmed with as a lock out value then when recalled etc the audio will be muted from the speaker A valid frequency can be input and saved as described in the Save function above MEMORY SCANNING MODE SETTING THE SCAN CHARACTERISTICS Memory scanning enables the
5. without having to wait for the scanner to move through at the selected scan rate to reach the desired new memory MANUAL HOLD FUNCTION To stop the scanner on a particular memory so that its stays continuously on that frequency MANUAL HOLD regardless of whether the signal disappears temporarily or not press the SCAN key to take the scanner out of memory Scanning mode The display will show the Bank and Memory numbers and the frequency programmed in the memory when Scan action was HELD The Memory number the scanner has HELD on is displayed to the right of the HOLD message on the lower line of the top left window of the display To resume scanning once more press either the UP ARROW or DOWN ARROW keys to move forward or backwards in the scan sequence and resume scanning taking the scanner out of MANUAL HOLD mode To exit scanning all together and return to the Manual Single Frequency mode simply press the SCAN key You can now use the UP ARROW or DOWN ARROW fine tune keys to manually adjust the frequency you stopped the scanner on if you wish or recall any frequency programmed into the memory REMOTE COMPUTER CONTROL With an appropriate interface cable connected to a serial port on an IBM compatible computer remote control of the scanners frequency and monitoring of the received signal level is possible with appropriate software NOTE CONNECTION OF THE SCANNER DIRECTLY TO A SERIAL PORT WITHOUT THE CORRE
6. Australis 26k Scanning Receiver Instruction Manual Titley Scientific A division of Elexon Electronics P L 6 253 Leitchs Road Brendale QLD 4500 Australis 26K Scanning Receiver Australis 26K Scanning Receiver Contents Page 2 Front panel controls and display Rear panel connectors and indicator Page 3 Scanner Operation Manual Single Frequency Mode Page 4 Memory Operation Page 6 Memory Scanning Mode Page 9 Remote Computer Control Page 10 Electrical specifications Page 11 Electrical specifications cont and Mechanical specifications SERIAL NUMBER SR 1234 FREQUENCY RANGE 149 0000MHz TO 152 9999MHz Page 1 Rev M Australis 26K Scanning Receiver Australis 26k Tracking Receiver Titley Electronics Front Panel Controls and Displa Volume Control Gain Control Keys Antenna Input Headphone Display Conventional knob operated potentiometer with On Off switch Off is fully CCW position Knob operated potentiometer Gain is maximum when the control is fully CW The minimum gain reduction is 50 dB 16 luminous membrane keys are incorporated in the front panel 0 9 Recall Save Scan Up and Down Fine Tuning and Light Standard type BNC connector Two 3 5mm mono phone jacks The jack marked with a crossed line attenuates the loud speaker when the phone jack is plugged A graphic type liquid crystal display approximately 16 x 54 mm is used to display all freque
7. CT INTERFACE CABLE OF AN IBM COMPATIBLE COMPUTER WILL POTENTIALLY DAMAGE BOTH THE SCANNER AND THE COMPUTER NEVER CONNECT THE SCANNER TO A COMPUTER WITHOUT THE CORRECT INTERFACE CABLE WHICH CONTAINS SIGNAL LEVEL CONVERSION ELECTRONICS The correct interface cable and control software will be available from Titley Electronics Page 9 Rev M Australis 26K Scanning Receiver ELECTRICAL SPECIFICATIONS Sensitivity The sensitivity of this type of receiver is often quoted as the minimum discernible signal level This is subjective and not a reliably measurable level Therefore the sensitivity characteristic of the receiver is defined here by specifying the maximum noise figure This can then be related to the signal to noise ratio for any given bandwidth Receiver Noise Figure Sensitivity for 10 dB S N N Selectivity Intermodulation Image and Spurious Gain Control Range Nominal Input Impedance Frequency Range Frequency Selection Frequency Stability Frequency Memories Memory Scanning Rate Memory Retention Intermediate Frequency Beat Frequency Oscillator Audio Output Battery Supply 2dB maximum 135 dBm 400 Hz BW 0 04 uV into 50 Ohms 6 dB BW 800 1000 Hz 50 dB BW lt 5 5 kHz gt 70 dB rel to 10 dB S N N gt 80 dB rel to 10 dB S N N 50 dB minimum 50 Ohms Set to any 4 MHz segment in 146 176 MHz 149 153 MHz std 100 Hz and 500 Hz steps Better than 1 kHz 10 to 60 C 10 banks of 10 m
8. aves the loudspeaker on Field Strength Meter This is displayed as a bar graph 0 10 and gives a good indication of direction Battery Indicator If the battery voltage is good then the message OK is displayed in the lower left window of the display Once the battery falls to a marginal voltage for correct operation the message LO is displayed in place of the OK message and a beep from the speaker will heard every 5 seconds to alert you to this low battery condition Operation in this low battery condition can not guarantee that the scanner will meet the specifications OPERATING MODES MANUAL SINGLE FREQUENCY MODE Manual single frequency mode is always selected at power on of the receiver regardless of what mode the scanner was in when the power was turned off On power on the frequency displayed and being tuned is the last frequency that was displayed on the LCD in the manual single frequency mode The message MANUAL appears in the upper left corner window of the LCD display when the scanner is in manual single frequency mode In the manual single frequency mode the receiver is continuously tuned to the frequency indicated in the display window To change the frequency the new seven digit frequency is entered using the numeric keys The first frequency digit is always 1 and does not need to be entered Six digits must always be entered to set the frequency When the first key is pressed the corresponding nu
9. can be entered as in manual single frequency mode with the display clearing the Bank and Memory window at the end of a successful six digit manual entry sequence Alternatively the frequency displayed can be fine tuned with the UP ARROW or DOWN ARROW fine tune keys with the display clearing the Bank and Memory window on detecting the first key press of the UP ARROW or DOWN ARROW fine tune keys If the full sequence of six digits is not completed or the delay between successive keys exceeds twenty seconds the operation is cancelled and the display reverts to show the current frequency This is an example to save transmitter frequency 151 0980 MHz into Memory 7 of Bank 1 Program in Transmitter frequency by pressing the buttons 5 1 0 9 8 0 The LCD should now display 151 0980 as the required frequency Press SAVE the LCD now prompts for a BANK number Press the Bank number in which you want to use 1 The LCD now prompts fora MEMORY number Press the Memory number in which you want to use 7 Page 4 Rev M Australis 26K Scanning Receiver MEMORY OPERATION cont a Save Function cont When scanning within a bank of ten memories and as an example only six of the 10 memories have frequencies you wish to scan you must lock out the 4 unused memories so that the scanning only looks for a signal on the 6 required memories To lock out these 4 unused memories you must save a frequency of OMHz into those memories The method to
10. emories with fine tune offset stored for each frequency Can be set to 1 25 2 5 5 or 10 Seconds per Channel Memory is retained while the receiver is switched off and while battery packs are changed 13 053 MHz Set nominally 2 kHz above the selected frequency for lower sideband reception 250 mW into internal loudspeaker or external load 9 6 Volt Ni Cd pack 8 AA cells or disposable cells Page 10 Rev M Australis 26K Scanning Receiver ELECTRICAL SPECIFICATIONS cont Battery Life Low Battery Voltage Battery Charging Battery Current Backlight Current 14 hours operation using the standard 1 1 Ah Ni Cad battery pack Backlight off LO is displayed on front panel and an audible warning sounds when the internal regulated supply falls to 9 1 volts External de plug pack or any 13 16 Volt dc source 750 mA or greater The internal constant current charging circuitry operates at 350mA 4 hour fast charge rate and 50mA trickle charge rate Application of external voltages greater than 18 volts may cause damage Typically 80 mA normal standby with backlight off 50 mA Signal Strength Resolution Approximately 0 1 dB Signal Strength Display Hold Time 650 mSec MECHANICAL ENVIRONMENTAL SPECIFICATIONS Size Weight Case Construction Sealing Front Panel Circuit Technology 50x 145x 170 mm Hx WxD approx 1 KG Aluminium sheet fabrication with polyester finish The case design minimises the
11. hen the fine tuning steps at 500 Hz while the UP ARROW or DOWN ARROW fine tune buttons are held pressed This allows for locating a frequency quickly with the fast fine tune function and then when near the required frequency single button presses can set the final frequency in 100 Hz increments The fine tuning varies approximately 90 steps per minute MEMORY OPERATION The memory of the scanner is arranged as ten banks of ten memories allowing the user to store up to one hundred individual frequencies in the memory a Save Function The currently displayed frequency can be stored in any of the one hundred memory locations by simply pressing the Save key The display then prompts BANK The Bank number that was last selected is indicated on the display If a different Bank number is desired then the new Bank number can be entered using one of the 0 9 numeric keys Alternatively pressing Save again selects the Bank number currently displayed and moves you on to selecting the required Memory number The display then prompts MEM The Bank and Memory numbers that were last selected are indicated in the upper left window of the display If a different memory number is desired then the new Memory number can be entered using one of the 0 9 numeric keys Alternatively pressing Save again selects BOTH the Bank AND Memory numbers currently displayed in the upper left window of the display Once the Save function is complete a new frequency
12. hus increases the signal level which must be received before it causes the scanner to HOLD and stop the Scan action keeping the scanner onto one frequency If HOLD function is selected then rotating the receiver Gain knob clockwise increases the receivers gain and thus reduces the signal level which must be received before it causes the scanner to HOLD and stop the Scan action keeping the scanner onto one frequency If HOLD function is NOT selected then the scanner will continuously advance through the selected Banks and Memories at the selected SCAN RATE regardless of received signal level Pressing the DOWN ARROW Fine Tune button will cause both the SCAN RATE and the HOLD function to cycle through the possible combinations NOTE that after every new scan rate selected the next DOWN ARROW button press will cause the HOLD function to be selected for the new scan rate Pressing the DOWN ARROW once more moves on to the next scan rate and clears the hold function for the new scan rate Thus the DOWN ARROW act as a toggle for both the Scan Rate and the Hold function for scanning STARTING SCANNING Once the desired Banks for scanning are selected as displayed by their numbers in the upper right window of the display and the Squelch Scan Rate and Hold functions are as desired the scanner can be placed into Scanning by again pressing the SCAN key The receiver will then begin scanning the selected Banks starting with Bank 1 if selected and
13. m being displayed or not being displayed Thus as Memories within a Bank can be locked out so can unused Banks Page 6 Rev M Australis 26K Scanning Receiver MEMORY SCANNING MODE cont SETTING THE SCAN CHARACTERISTICS cont In the upper left window on the display there are two rows of messages The top row indicates the current setting for the squelch mode of the scanner The display will either show SQ ON or SQ OFF The bottom row indicates the current setting for the scan rate and hold mode of the scanner The display will show four scan rates FAST or FAST R MED or MED H SLOW or SLOW R and XSLOW or XSLOW H where the optional H represents the hold mode of scanning operation SQUELCH FUNCTION SQUELCH is used to control the presence or absence of audio during scanning operation Pressing the UP ARROW Fine Tune button will cause the SQUELCH message to toggle between two values SQ ON or SQ OFF Press the key to change the value press it again to return it to the previous value If SQ OFF is selected then CONTINOUS audio will be heard during the scanning operation regardless of the received signal level on ANY memory frequency If SQ ON is selected then during scanning if a frequency being received has a signal which is above the preset level then audio will be heard from the speaker for this frequency Thus when scanning frequencie
14. mber is displayed in the second from left tens of MHz display position The first digit entered the 10MHz digit must be valid for the range the scanner has been optimised for entering a digit other than the correct range value will cause the unit to ignore the digit and issue a beep only The remaining digits are blanked As the remaining five digits are entered they are displayed in the appropriate position progressing from left to right The second digit entered the MHz digit must also be valid for the range the scanner has been optimised for entering a digit other than the correct range value will cause the unit to ignore the digit and issue a beep only When the last digit is entered the radio will switch to the new frequency If the full sequence of six digits is not completed or the delay between successive keys exceeds twenty seconds the operation is cancelled and the display reverts to show the current frequency Page 3 Rev M Australis 26K Scanning Receiver MANUAL SINGLE FREQUENCY MODE cont Thus for example if the scanner has been optimised for the 149MHz to 152MHz bands then the first two digits you enter for the frequency must be between 49 and 52 representing 149 0000MHz to 152 9999MHz Fine Tuning The receiver frequency can be fine tuned by pressing the UP ARROW or DOWN ARROW keys The fine tuning allows the frequency to be adjusted in 100 Hz steps If the UP ARROW or DOWN ARROW fine tune buttons are pressed continuously t
15. ncy signal strength battery capacity and mode data It has LED back lighting which can be switched on for night viewing Rear Panel Connectors and Indicator Battery Charger Power Charge Indicator Data Connector A 2 5mm DC socket is provided for connecting a plug pack or other charger or external power supply The centre pin is the positive terminal If operation off a permanent 12 volt external supply is required then you must remove the bottom black cover and disconnect the battery plug from its matching socket This will allow for constant external operation The RED LED on the rear panel lights to indicate the batteries are being charged at the fast charge rate approx 4 hours from flat Once the LED switches off batteries continue to be charged at the trickle rate Data can be transferred between the scanner and a host computer using a special interface cable available from Titley Electronics Page 2 Rev M Australis 26K Scanning Receiver SCANNER OPERATION Audible Indication of Key Press When any key is pressed a short beep is heard in the loudspeaker and headphones The sound level is independent of the receiver volume control setting Light The Light key toggles the display back light On Off To save battery life the light automatically switches off after ten minutes Headphone Outputs Two 3 5 mm mono phone jacks are provided One switches off the loudspeaker when the headphones are plugged in The other le
16. s where the signal is below the preset level no audio is heard and scanning continues with no audio until a signal exceeds the preset level and causes audio to be heard once again but ONLY for the memory whose signal has exceeded this preset level ONCE the scanner advances to the next memory the audio will be muted again unless the signal on the next memory is ALSO above the preset level in which case audio will also be heard for this memory SCAN RATE SCAN RATE is used to determine how quickly the scanner advances through the selected Banks and Memories when scanning There are four scanning rates these being FAST 1 25 seconds per memory MED medium 2 5 seconds per memory SLOW 5 seconds per memory XSLOW 10 seconds per memory Page 7 Rev M Australis 26K Scanning Receiver MEMORY SCANNING MODE cont HOLD FUNCTION HOLD function determines if the scanner steps continuously through its selected Banks and Memories or stops HOLDS on a frequency whose signal has exceeded the preset level as explained in the SQUELCH FUNCTION If the HOLD function is selected as indicated by H on the right hand side of the SCAN RATE value then when a signal is received which is above the preset level the scanner will stop on the current frequency and remain there while ever a signal above the preset level is being received If HOLD function is selected then rotating the receiver Gain knob anti clockwise reduces the receivers gain and t
17. scanner to search for up to a hundred signals corresponding to the frequencies stored in ten Banks each Bank having ten Memories giving a total of one hundred Memories Scanning can occur over one individual Bank of ten Memories or up to ten Banks of ten memories Within a Bank of ten Memories the unused Memories can be locked out to prevent the scanner looking for a signal on an unused Memory NOTE See the Save function for a detailed description of lock out of unused Memories Thus the scanner will only look for signals on memories with valid frequencies programmed i e not locked out If you are unsure about what frequency the Memories within a Bank are programmed with use the Recall function to examine each Memory within the Bank in question The receiver is put into the Scan set up mode by pressing the SCAN key The display then prompts BANK The Bank numbers currently selected are indicated as two rows of numbers through to 5 and 6 through to 0 in the upper right window on the display As explained before you can scan from one Bank of ten Memories up to ten Banks of ten Memories When a number is displayed in the upper right window of the display it indicates that the associated Bank will be scanned during the Scan procedure If the window has NO numbers displayed this indicates that NO Banks have been selected for scanning Pressing a 0 9 Numeric key representing the bank number will alternate its value fro
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