Kenwood TS-990S Marine Radio User Manual
Contents
1. 30 20 10 0 1 000 10 000 100 000 14 1 MHz 1 83 MHz 82 78 92 48 MHz 96 48 107 48 MHz 115 48 128 992 MHz 127 48 138 992 MHz PLL PLL AMP AMP Divider 1 N Main reception unit 1st Local Oscillator Block Diagram DDS 1 8 3 5 5M 7M 14 18 21 24M N 10 N 8 N 4 other than these DDS Direct Main receiver 1st Local Oscillator C N Main receiver characteristic example 20m 160m The transceiver uses the down conversion method on all amateur bands and features five types of High IP roofing filter Narrow bandpass widths selectable are 500 Hz and 270 Hz for CW opera tion 2 7 kHz for SSB and 6 kHz and 15 kHz which are suitable for AM FM These filters are automatically selected in tandem with DSP based settings Of course manual switching is possible as well The TS 990S Local Oscillator Circuit is an indepen dent configuration that combines the main receiver and VCO Frequency Division DDS the sub receiver DDS transmitter and conventional PLL with the targeted signal system The newly developed VCO frequency division format is used for the 1st local oscillator of the main receiver The device achieves favorable C N characteristics that rival the DDS direct format and relatively spurious free local oscillation signals that are characteristic of the PLL format by oscillating and dividing the VCO at higher frequencies than the intended frequency It is possible2. bandwidths and switch instantly at any time Set for narrow or wide such a function is convenient for com petitions requiring quick operations The reception sound quality of SSB and CW is not solely determined by audio frequency and filter delay properties AGC characteristics play a very IF filter bandwidth variability on each major block of the TS 990S By distributing the signal processing of the main IF band scope and sub IF we have realized ample digital signal pro cessing power FM mode is AF DSP processing significant role as well The opinion of many of our fans that even for long periods of time they never get tired of listening is due to the characteris tics of Kenwood s AGC The TS 990S goes a long way in helping further refine the Kenwood sound by innovating not only the AGC control algo rithm on the DSP but also the analog AGC unit as well For main IF DSP transmission unit ADSP 21363 clock 333 MHz For sub IF DSP every kind of signal processing ADSP 21369 clock 260 MHz lt Other extensive interference elimination and noise reduction functions gt Beat cancel function BC1 BC2 The beat cancel function is effective against relatively weak multiple beats whereas the IF auto notch is effective against strong beats Audio peak filter You can vary bandpass width of pitch tone when there are carrier receptions like CW and FSK FSK is compatible with mark and space frequencies For band scop
3. and setting You can also record and replay your message Transmit and receive DSP equalizers RX equalizer Voice guidance recording function Using the ARCP 990 software radio control soft ware you can control most functions from your PC Control the memory channel settings and functions using your PC Download the free software from the Kenwood website Remote control the TS 990S from your PC Sub receiver with extensive interference elimination controls centered on the right side of the main panel ARCP 990 example views LOCK F LOCK Key Useful when used in combination with TF SET CW T CW Tune Automatic tuning makes the target signal turn into pitch frequency at a press of the CW signal key FINE The frequency change unit of the tuning knob can be set to 1 10 of the original unit VOICE The PF key is usually for voice trans mission but you can also assign a different function to it FIL SEL Preset the bandpass with 2 or 3 widths of the DSP IF filter for quick WIDE NAR switching operations 13 HF 50MHz TRANSCEIVER TS 990S Useful functions Front Rear Panel Back Panel Dimensions 7 87 6 50 7 17 7 91 18 11 25 98 15 75 17 68 11 81 12 05 TS 990S SP 990 Unit in At front leg up position Back Panel Antenna Connector 4 RX IN Connector RCA Receive Only Antenna Terminal RX OUT Connector RCA External Receiver Connection Terminal K
4. for download from Kenwood website starting late March 2013 HS 5 1 Open Air Deluxe Headphones SP 990 External Speaker 1 HS 5 and HS 6 are monaural We recommend using stereo headphones to fully utilize simultaneous dual reception function of the main unit General Frequency range Transmitter 160m band 1 8 2 0 MHz 80m band 3 5 4 0 MHz 60m band 5 1675 5 25 5 45 MHz 40m band 7 0 7 3 MHz 30m band 10 1 10 15 MHz 20m band 14 0 14 35 MHz 17m band 18 068 18 168 MHz 15m band 21 0 21 45 MHz 12m band 24 89 24 99 MHz 10m band 28 0 29 7 MHz 6m band 50 0 54 0 MHz Frequency range Receiver 0 13 30 MHz 50 54 MHz 1 VFO Continuous 30 kHz 60 MHz Mode A1A CW J3E SSB F1B FSK G1B PSK A3E AM F3E FM Frequency stability Within 0 1 ppm 32 F 122 F 0 C 50 C Antenna impedance 50 Antenna tuner load range 16 7 150 Standard voltage AC 120 V 60 Hz Supply voltage range AC 90 V 132 V 180 V 264 V Power consumption At transmit maximum 720 VA or less At receive no signal 120 VA or less Usable temperature range 32 F 122 F 0 C 50 C Dimensions Without projection W18 11 x H6 50 x D15 75 in W460 x H165 x D400 mm Include projection W18 11 x H7 17 x D17 68 in W460 x H182 x D449 mm At front leg up position front panel H7 91 in 201 mm rear panel H6 81 in 173 mm Weight Approx 54 01 l
5. numerous interference and noise elimination functions Such innovations have given new life to Kenwood s legendary sound The sub receiver features performance that has exceeded its class since going on sale thus further refining this popular receiver on the TS 590S Be cause this is particularly the case on the front end where it employs circuit configuration that makes down conversion possible on the leading five ama teur bands it can be used in actual operation despite being just a sub receiver The IF bandwidth for 160m 80m 40m 20m 15m bands is SSB CW FSK PSK for frequency levels 2 7 kHz or below Frequencies of 500 Hz and 2 7 kHz are standard for sub receiver roofing filters You can maintain a Roofing filters 500 Hz 2 7 kHz more or less flat dynamic range even if interference impinges on your reception frequency thanks to superior close in dynamic range properties You can clearly catch signals under conditions made prob lematic by strong close in interference signals Down conversion occurs on the 160m 80m 40m 20m 15m bands The sub receiver incorporates the TS 590S receiver 8 HF 50MHz TRANSCEIVER TS 990S Sub receiver Kenwood continues to provide quality sound trans mission that is unattainable through analog circuits By installing the world premiere DSP in the TS 950 and achieving IF AGC control on the TS 870 our experience has led to the use of three DSP units one You can vary DSP filter bandw
6. H 500 Hz 500 Hz or more 6 dB 1 2 kHz or less 60 dB AM LO 100 HI 3000 Hz 6 0 kHz or more 6 dB 12 kHz or less 50 dB FM 12 kHz or more 6 dB 25 kHz or less 50 dB XIT variable range 9 999 kHz Notch filter attenuation 60 dB or more Auto 70 dB or more Manual Beat cancel attenuation 40 dB or more Audio output 1 5 W or more 8 Audio output impedance 8 1 MAIN BAND Spec guaranteed in amateur band 160m through 6m 2 In 160m 80m 40m 20m 15m Amateur band IF band width 2 7 kHz or less SSB CW FSK PSK 3 Except in above 2 Internal beat may occur during amateur radio band reception depending on combination of main band and sub band frequencies of a main unit Spurious signal other than reception signal may appear on band scope waterfall view too NEW NEW NEW 15 HF 50MHz TRANSCEIVER TS 990S Options Specifications Alterations may be made without notice to improve the ratings or the design of the device The photographic and printing processes may cause the coloration of the device to appear different from that of the actual device Communications Division Headquarters 3970 Johns Creek Court Ste 100 Suwanee GA 30024 U S A www kenwoodusa com ADS 04513 Printed In USA
7. HF 50MHz TRANSCEIVER TS 990S For Real DX ers TS 990S HF 50MHz TRANSCEIVER Legend and Innovation 2 In the making for more than twenty years the ultimate Contest DX experience is here Kenwood s long awaited flagship model is equipped with the latest technology that embodies an entirely new HF standard TS 990S Actual size W18 11x H6 50 x D15 75 in Projections not included 3 1973 TS 900 This all band SSB transceiver made history with its state of the art technology 1982 TS 930 The world s first Ham Radio HF transceiver equipped with a built in automatic antenna tuner 1985 TS 940 This HF transceiver offered the high dynamic range that won the struggle through the Cycle 22 pile up 1989 TS 950 Another world s first this HF transceiver came standard with a built in DSP External Speaker SP 990 Input 5 W Repeated innovation turns the tradition into a legend NEW 4 2013 TS 990 The TS 990S comes equipped with dual receivers for simultaneous reception on different bands it also features narrow band roofing filters on the main receiver in a full down conversion configuration The TS 990S achieves the highest basic reception performance of any radio in the TS series through the careful selection of circuits components and accelerating analysis using triple DSP configuration Also thanks to the dual TFT display and superior panel layout it achieves both comfortable visibility and ope
8. bs 24 5 kg Transmitter Output power CW SSB FSK PSK FM AM 200 W 50 W Modulation SSB Balanced AM Low Power FM Reactance Maximum frequency deviation FM wide 5 kHz or less narrow 2 5 kHz or less Spurious emissions HF Harmonics 60 dB or less HF others 50 dB or less 50 MHz 66 dB or less Carrier suppression 60 dB or less Unwanted sideband suppression 60 dB or less Transmit frequency response Within 6 dB 300 2700 Hz Microphone impedance 600 XIT variable range 9 999 kHz Receiver Circuit type Main Sub1 2 Sub2 3 Double superheterodyne Double superheterodyne Triple superheterodyne Intermediate frequency 1st IF 8 248 MHz 11 374 MHz 73 095 MHz 2nd IF FM 24 kHz 455 kHz 24 kHz 10 695 MHz 3rd IF FM 24 kHz 455 kHz Sensitivity TYP SSB CW FSK PSK S N 10 dB 0 5 V 0 13 0 522 MHz 4 V 0 522 1 705 MHz 0 2 V 1 705 24 5 MHz 0 13 V 24 5 30 MHz 0 13 V 50 54 MHz AM S N 10 dB 6 3 V 0 13 0 522 MHz 32 V 0 522 1 705 MHz 2 V 1 705 24 5 MHz 1 3 V 24 5 30 MHz 1 3 V 50 54 MHz FM 12 dB SINAD 0 22 V 28 30 MHz 0 22 V 50 54 MHz Image Rejection Ratio 50 MHz 70 dB 60 dB or less IF Rejection Ratio 70 dB or less Selectivity SSB LO 200 HI 2800 Hz 2 4 kHz or more 6 dB 4 4 kHz or less 60 dB CW FSK PSK WIDT
9. e ADSP 21363 clock 333 MHz WIDTH If the interference is on one side only you can shift the central frequency without changing bandwidth You can avoid neighboring signals by varying the bandpass width Target signal Intended signal SHIFT SHIFT WIDTH IF filter A B C one touch switch instantly Band elimination filter function The noise blanker function NB1 NB2 is equipped with digital analog 2 format DSP based noise reduction function NR1 NR2 IF notch The sound quality of the built in speakers is largely determined by the chassis structure With the TS 990S we have been able to mini mize unnecessary chassis vibration through multiple simulations from the conceptual phase The Kenwood sound is supported not only by circuits and DSP but also by exact chassis design 77 mm Built in speaker Top plate oscillation simulation example Band Elimination Filter 1 000 80 60 40 20 0 500 0 500 1 000 Amplitude dB Frequency Hz IF Manual Notch BW 400 Hz 800 Hz Amplitude dB Frequency Hz 1 000 80 60 40 20 0 500 0 500 1 000 IF AGC control block diagram RX IF AGC DET RX Audio IF Filter AutoManual Notch Band Elimination Filter OUT Band ATK REL Manager AGCV DAC Analog AGCV IF ADC Digital NB AGC DET AGC DET Demod SOFT ATK CONT Advanced AGC control fusing together digital and analog Exacting chassis desig
10. e optimal fin shape and size for heat dissipation Transmit Operating stably even when continually working over long periods of time such as in competitions Transmitter performance featuring high scale specifications can withstand long periods of operation at full power ANT 1 2 3 4 MAIN RX ANT OFF MAIN BAND RECEIVER SUB BAND RECEIVER OFF ON ON AT RX TX MAIN BAND ANT Selector SUB BAND ANT Selector Transmission Unit RX OUT RX IN SUB RX ANT 3rd order TX IMD 14 2 MHz 200 W SPAN 10 kHz 10 dB div 10 50 70 90 30 The POWER MOS FET VRF150MP runs at 50 V in push pull You can obtain a stable output of 200 W on all bands You achieve superior IMD properties by pursuing bias and matching conditions in order High reliability design promises stable operation at 200 W Built in automatic antenna tuner capable of high speed operation Cooling system to send a sufficient volume of air to each unit It is outfitted with four antenna terminals which can be set independently on amateur bands whether main band or sub band The reception input and output terminals can be used for reception dedicated antennas antenna output for external reception devices and external BPF connections It is usable with either the main band or the sub band 10 HF 50MHz TRANSCEIVER TS 990S Transmission unit cooling Sub band display monitors the target signal itself Main display e
11. ey Jack 6 3 mm For Paddle Straight Key and PC Keying ACC2 Connector 13 Pin DIN Audio I O and Other Accessories Connection Remote Connector 7 Pin DIN Linear Amplifier Connection Meter Jack 3 5 mm Analog Meter Connection Drive Connector RCA Drive Output Ground Terminal Standard External I O Terminal BNC 10 MHz Front Panel Headphone Jack 6 3 mm Paddle Keyer 6 3 mm USB Connector USB B PC Control USB Audio Microphone Jack 8 Pin Metal Type AC Power Supply Connector 3 Pin AT Connector 6 Pin External Antenna Tuner Connection Keypad Jack 3 5 mm Function Key Pad Connection COM Connector D SUB 9 Pin RS 232C Optical Connector Input Terminal EIAJ Optical Optical Connector Output Terminal EIAJ Optical External Speaker Jack 1 3 5 mm External Speaker Jack 2 3 5 mm USB Connector USB B PC Control USB Audio Display Connector DVI I External Display Connection Terminal LAN Connector RJ 45 PC Control Time Correction NTP Front Panel 14 HF 50MHz TRANSCEIVER TS 990S Front Back Panel Main Options TS 990S Specifications MC 90 Deluxe Desktop Microphone MC 60A Desk Microphone MC 43S Hand Microphone HS 6 1 Light Weight Headphones ARHP 990 Radio Host Program Freeware Freeware available for download from Kenwood website starting late March 2013 ARCP 990 Radio Control Program Freeware Freeware available
12. he signal path of the 1st mixer based on select circuits and components employing large core toroidal coils for protecting against distortion from large input signals as well as using relays for the signal switching 6 The newly developed narrow band High IP roofing filters show their true value by cutting adjacent unwanted signals High C N levels are realized by dividing high frequencies using the newly developed VCO frequency division 1st local oscillator Comes equipped with 0 1 ppm TCXO which combines high stability and energy saving through through through 0 6 12 18 dB 270 Hz 500 Hz 6 kHz 15 kHz 2 7 kHz 1st Mixer Roofing Filters RF BPF ATT Pre Selector Pre Amp Post Amp TS 990S MAIN BAND FRONT END DDS IC AD 9951 Mode Phantom load Start up time Stand by power saving Or less 0 5 W Approx 40 seconds Normal Approx 20 W Approx 5 seconds Roofing filter characteristic example BW 500 Hz Roofing filter characteristic example BW 270 Hz 1st Mixer CH1 B R log MAG CH2 B R log MAG IF BW 100 Hz SWP 8 6 sec SPAN 2 kHz 10 dB REF 0 DB 10 dB REF 0 DB SPAN 100 kHz CH1 B R log MAG CH2 B R log MAG IF BW 100 Hz SWP 8 6 sec SPAN 3 5 kHz 10 dB REF 0 DB 10 dB REF 0 DB SPAN 100 kHz TS 990S MAIN Local OSC C N Phase Noise dBc Hz Offset Frequency Hz 100 160 150 140 130 120 110 100 90 80 70 60 50 40
13. idth and eliminate ex tensive interference depending on use and condition You can operate it as a HI CUT LOW CUT function in SSB AM FM mode and WIDTH SHIFT function in CW FSK SSB DATA transmission mode You can eliminate overpowering interference signals with a notch filter and catch intended weak signals You can switch between the IF auto notch and the manual notch that can be changed manually depend ing on the state of interference The filter is capable of varying the stopband band width and the amount of loss When signals that interfere with the target signal multiply this is a convenient func tion for operations such as dampen ing interference signals even if it cuts down some of the target signal Equipped with an analog noise blanker NB1 which is considered effective against weak noise and a digital noise blanker NB2 Choose the NB1 or NB2 based on noise type and reception condition With NB1 stable noise reduction is possible without depending on reception bandwidth NB2 is effective against noise that cannot be tracked by an analog noise blanker Plus both the NB1 and NB2 can be used simultaneously with the TS 990S The device is also equipped with two types of noise reduction format NR1 and NR2 An optimal noise reduction format is applied to each reception mode for NR1 And for NR2 SPAC method is applied which is more effective in CW operation It is possible to preset a maximum of three IF filter
14. n for realizing quality sound Equipped with dedicated DSP for the main receiver sub receiver and band scope Extensive interference elimination and noise reduction functions 9 HF 50MHz TRANSCEIVER TS 990S DSP IF filter The built in automatic antenna tuner is a preset type that covers amateur band frequencies rang ing from 160m 6m and is completely operable during receive The tuner is capable of rapid QSY based on instantaneous band change using a relay system known for high speed operations The relays capacitors and inductors use large sized components that are able to bear the 200 W output Cooling is very important to obtain a stable output of 200 W Heat dissipation efficiency is increased in the TS 990S through a large fin type aluminum heat sink An independent variable speed fan is provided for the switching power supply final unit and antenna tuner cooling each unit with a sufficient air supply The switching power supply and the final unit have twin cooling fans Noise is reduced by controlling the fan speed according to the temperature to fully exploit the FET attributes Further you can realize Kenwood s distinctive tone by amplifying the clean modulated signal produced by DSP with an amplifier that exhibits excellent linearity Thermal Simulation Example To dissipate the heat of the 200 W final we used swage fins instead of the conventional extruded aluminum fins Using CAE analysis we designed th
15. nd elimination filters APF mute the addition of slope switching in the DSP IF FILTER independent AGC OFF key and simultaneous use of NB1 NB2 Conveniently located interference elimination controls of the sub receiver Frequently used functions are centrally placed in the immediate vicinity of the main and sub band knob Supporting quick operation for radio sporting Useful functions positioned around the main and sub band knob We equipped the front panel with two USB ports a key jack microphone jack and a headphone jack Use USB memory or a keyboard Increased user friendliness by placing two USB ports on the front panel Switch to update mode and insert USB memory into the USB A port on the front panel and the update will automatically begin Or access your USB mem ory from your PC by connecting your PC via USB cable to the USB B port on the rear panel switch to update mode and a folder named TS 990 will appear on your computer Firmware updates by USB There are a variety of I O interfaces including the microphone jack analog audio input and output USB audio interface and optical digital interface By combining DATA mode 1 3 with SSB FM AM modes it is possible to easily switch between an external device for modulation and demodulation Switch between DATA VOX function and mute for each modulated line DATA mode supported by external I O switching Equipped with voice guidance for frequencies key control
16. on 3rd order Intercept Point characteristics Intercept Point dBm Interfering wave separation kHz frx 14 2 MHz PRE AMP OFF BW 500 Hz MODE CW 20 00 1 10 100 10 00 0 00 10 00 20 00 30 00 40 00 50 00 TS 990S Our old model Pre Selector 160m BAND 0 0 1 0 2 0 3 0 4 0 5 0 100 80 60 40 20 0 Frequency Hz Amplitude dB Overwhelmingly the highest quality receiver in the TS series The dual receivers facilitate reception on different bands The main receiver is the highest quality receiver among the TS 900 series thanks to its down conversion configuration newly developed mixer and five types of roofing filters This highest quality transceiver will show its true metal in contests and fierce pile ups even with high intensity signals The TS 990S will surely satisfy any real DX er In place of the Double Balanced Mixer which uses the J FET we have installed the newly developed Double Balanced Grounded Switch Type in the 1st mixer circuit which is the heart of the main receiver The transceiver is also equipped with a pre selector function works on HF amateur band that varies its tuning frequency in tandem with the receiver frequency It effectively dampens interference from strong signals that cannot be minimized through bandpass filters on dedicated amateur bands Furthermore we have achieved a 40 dBm class of third order intercept point for t
17. other accessory functions You can also view internal parameter settings and memory lists In addition it features a band scope Main display Monitor the area surrounding the target signal with the main display Simply touch the main screen for quick QSY Touch sensitive main screen When you are in the mood for a change how about these display modes 11 HF 50MHz TRANSCEIVER TS 990S Dual Display The panel layout familiar to Kenwood users allows for intuitive operation It s sure to win you over increasing the accuracy of your operations and allowing you to develop greater familiarity with the equipment Comfortable operational performance that you can control at will MAIN BAND RX TX key SUB BAND RX TX key can easily call up the states of simultaneous dual reception using the dual channel memory Number of Memory Channels Standard Memory 100 Channels Interval Specified Memory 10 Channels Extended Memory 10 Channels Control You can use the frequency function that switches legacy VFO A VFO B by switching the main and sub band Turn the sub band reception on and off us ing the RX key on top of the main knob and switch between simplex and split using the TX key A single glance at the LED lighting lets you know the current status Memory for a maximum of 120 channels is avail able In addition to the repeater frequency you can also preset beacons and transmission stations You The new fre
18. quency function can be operated intuitively You can also input split and sub band reception states into memory The new split function allows you to use quick settings 1 Hold down the Sub Band TX key and the split LED will flash 2 When the transmission frequency is set To set 2UP simply press 2 on the numeric keypad and the sub band VFO will change 2 kHz from the main reception frequency split set up is now complete To set 1DOWN press 0 and then 1 on the numeric keypad and you can set increments of 1 kHz from 1 9 kHz 2 Searching for a transmis sion frequency Operate the sub band knob to determine the transmission frequency press the TX key and setup is complete Coarse adjustment is also possible by tapping a likely vacant frequency on the main scope Similar to the legacy series you can add functions via M S and M S giving a dual action quick split setup 12 HF 50MHz TRANSCEIVER TS 990S Operability In addition to the legacy presets up to a maximum of three user settings can be configured You can store the equalizer settings used for each mode and enjoy a very comfortable rag chew session with others Kenwood SKY COMMAND SYSTEM II Commander TH D72A TM D710A 440 MHz 144 MHz Transporter TH D72A TM D710A 440 MHz 144 MHz HF Transceiver TS 990S 440 MHz band Con rmation of HF frequency 144 MHz band HF receive audio 440 MHz band Voice signals Control signals COM connec
19. rability Our top of the line transceiver is for all radio operators who love HF HF 50 MHz Transceiver TS 990S Output 200 W NEW 5 A key point in tapping maximum performance from the 1st mixer in actual operation say CW operation is to prevent the outflow of unnecessary signals other than the target signal from the mixer to the subsequent stage This is because it can tap the maximum per formance of the digital IF filter using the DSP in the final IF stage The TS 990S main receiver employs a 1st IF frequency 8 248 MHz down conversion format It achieves superior close in dynamic range unattainable through conventional up conversion formats Even if the interference is a close in frequency the receiver maintains a relatively flat dynamic range which you can tune without losing your target signal We have achieved down conversion format for all amateur bands Main Receiver through through through 0 6 12 18 dB 270 Hz 500 Hz 6 kHz 15 kHz 2 7 kHz 1st Mixer Roofing Filters RF BPF ATT Pre Selector Pre Amp Post Amp The horizontal axis shows separation of the target signal by interfering signal frequencies two waves At a frequency of 10 kHz interference 1 refers to reception frequency 10 kHz and interference 2 refers to reception frequency 20 kHz Pre Selector feature Transformer feedback RF Amp Amateur Band RF BPF The newly developed mixer contributes to achieving 40 dBm IP3 Comparis
20. to convert it to 1st IF in a pure state without leaking the target signal as noise by reducing static noise from the local oscillator and increasing the C N ratio The standard equipment includes a TCXO Temperature Compensated Crystal Oscillator which stabilizes frequencies at 0 1 ppm as the standard signal source Unlike OCXO Oven Controlled Crystal Oscillator which requires warm up time this device can start up quickly even from the power off position while maintaining a high level of stability It is in compliance with European energy saving standard Lot 6 Power consumption in stand by energy saving mode is less than 0 5 W A BNC connector on the rear panel provides 10 MHz reference I O 7 HF 50MHz TRANSCEIVER TS 990S Main receiver Triple DSP Two attractive features of simultaneous reception on different bands are that you can easily check the condition on other bands and still easily handle split operation An already legendary Sub receiver supports dual reception Innovation spurred by digital technology has revolutionized the Kenwood sound Sub Receiver Even after using narrow bandwidth filters for long periods of time it is still easy to hear and less tiring to listen to In addition to introducing AGC control using dedicated DSP we have further refined the Kenwood sound and reception sound quality transmitted by radio operators worldwide by innovating the analog AGC unit and installing
21. tor MIC HF antenna Transporter Commander 3 5 mm EXT SP Kenwood SKY COMMAND SYSTEM II uses a pair of TH D72A TM D710A transceivers TS 990S is limited to the following functions in the operation of the current KSS Operation Commander A B in the TS 990S is equivalent to M S Memory channel is simplex operation only Remote power On Off is not available on Standby State Low Power Consumption mode Control to the main band operation only Note Refer to applicable Amateur Radio regulations to check whether you are permitted to use this function Enables full duplex operation with improved functionality such as visual confirmation of HF frequency on the LCD panel Control via TNC AX 25 enables more access to HF functions XIT mode switching split frequency operations on off memory shift and frequency step selection The transporter sends out its pre programmed call sign via CW every 10 minutes The dedicated sub receiver has extensive interfer ence elimination capability and is conveniently located to the right side of the main panel Access the knobs and keys you need without hesitation Share the use of main and sub band variable encod ers by switching the operations object An LED is lit when operating the sub band to prevent accidental operation this can also be dedicated to the main encoder variable bandwidth Other functions have been significantly upgraded in the TS 990S from the TS 590S including ba
22. xample views Equalizer view Waterfall view RTTY Reception view Single frequency display Single frequency display with virtual dial Dual frequency display FSK mode PSK mode Magnified frequency display Simultaneous display Normal display Dual frequency display Basic screen The 3 5 TFT sub band display is located above the main knob which not only reduces eye movement in reading the frequency but also allows you to monitor the target signal itself by displaying the demodulated audio spectrum In addition filter Main display Wide dial display Reception specific Sub band display Analog dial display TS 940 type display TS 930 type display Dual display The combination of two displays main and sub band allows you to simultaneously monitor the target signal and the surrounding area with minimal eye movement Fitted with dual TFT displays for an intuitive situational awareness function that allows you to monitor band status Ex ecute fast sweeps with FFT processing using DSP Switch to different view modes such as waterfall and reception transmission equalizer views effects can be displayed on the easy to see sub band display allowing for intuitive operation You can switch the sub band display among the four different view modes below according to your intention The main display shows basic information about the frequency mode meter and other functions as well as the on off status of the
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