KENWOOD SSB Transceiver Model TS-820S Operating Manual Pome woos ra a »- = ® x ~ 4, Banned) - RT pe ibis COMP Levey. tty a « OPERATING MANUAL IMPORTANT This manual has been written basically for use of model TS-820S. The difference between models TS-820S and TS-820 is that model TS-820S has digital display built-in as against model TS-820 has no digital display built-in. Accordingly, if you have purchased model TS-820, you may skip over the passages concerning digital display. CONTENTS TS-820S SPECIFICATIONS Wie eee eee ee eee 3 4.11 Transmitter Tuning SECTION) FEATURES oe tee 4 BAT bie leet uel 4.13. CW Operation SECTION 2 INSTALLATION ......cccscccssetsteess-seersse 5 4.14" /Operation with @ LineacAmpnnee 2a Unpacking 4.15 Fixed Frequency Operation 2.2 Operation Location 4.16 Internal Cross Channel Operation 2:3 Power Connections 4.17 Mobile Operation 2.4 Antenna 4.18 DX Operation (Use of Processor) 2.5 Microphone 4.19 RTTY Operation 2.6 Key 4.20 SSTV (Slow Scan TV) Operation 2.7 ‘External Speaker and Headphone 4.21. Operation with a Phone Patch 2.8 RTTY (FSK) 4.22 Use of Monitor Switch 2.9 Ground 4.23. Novice Operation SECTION 3. OPERATING CONTROLG................... 9 TS-820 BLOCK DIAGRAM iin. .cc:csccccscceesseceereensaeeen 24 3.1 Front Panel Controls ; SECTION 5 CIRCUIT DESCRIPTION................... 25 S12 Rear Panel Controls 5.1 Block Diagram SECTION 4 OPERATING INSTRUCTIONG........... 16 Seg ALTOS AU 41 Preliminary Procedure 5.3 Final Stage Power Amplifier 4.2 Receiver Tuning SECTION 6 MAINTENANCE AND ALIGNMENT. 33 4.3 Reading the Operating Frequency 6.1 General Information 4.4 Calibrating the Frequencies 6.2 Accessories 4.5 RF GAIN 6.3 Adjustment of Receiver Section 4.6 RF ATT 6.4 Adjustment of Transmitter Section pet et SECTION 7 TROUBLESHOOTING........ccccccccsceosee 40 4.8 IF Shift 49 Noise Bisaker TOP and BOTTOM VIEW OF THE TS-820............. 42 4.10 AGC (Automatic Gain Control) SCHEMATIC DIAGRAM Jy c.....coiean ese 43 TS-820S SPECIFICATION : S sunuvscavennccauanvscnnennccannenscunsnosceoutnscunsunscanuen-caennnscnoeenecueusoeateneomcnsenosctanenecusgnoscunnenscaneanscunneo-conuenscasugnocuuauonetunnocanenneoueunoecenunnecusnnnect0nen-coneeneout0nnecH04uneoueanosc40enn-cUtenscabenneobeduecunuenceueusvoceuseoscununeoutuunecupennectanenecanennscane® FREQUENCY RANGE........................0008. 160 meter band — 1.80 to 2.00 MHz 80 meter band — 3.50 to 4.00 MHz 40 meter band — 7.00 to 7.30 MHz 20 meter band — 14.00 to 14.35 MHz 15 meter band — 21.00 to 21.45 MHz 10 meter band — 28.00 to 28.50 MHz (A) 10 meter band — 28.50 to 29.00 MHz (B) 10 meter band — 29.00 to 29.50 MHz (C) 10 meter band — 29.50 to 29.70 MHz (D) WWV — 15.0 MHz (receive only) ys 058s rien casshevesceuvnsiinasonacdivnss USB, LSB, or CW, FSK |: eamiiey ey | 120/220 VAC, 50/60 Hz 13.8V DC operation TS-820S TS-820 TS-820S TS-820 Roo 57 watts (heaters on) 45 watts (heaters on) 6A (heaters on) 5A (heaters on) Ide 38 watts (heaters off) 26 watts (heaters off) 1.4A (heaters off) 0.6A (heaters off) Tranemit 292 watts 280 watts 16A 15A (maximum) (maximum) (Maximum) (maximum) 120/220 VAC, 50/60 Hz operation 13.8V DC operation 200 watts PEP for SSB operation 120 watts PEP for SSB operation 160 watts DC for CW operation 90 watts DC for CW operation 100 watts for FSK operation 60 watts for FSK operation Peete POWER INPUT ................cccsccee AUDIO INPUT IMPEDANCE. .................. 50 k ohms (high impedance) AUDIO OUTPUT IMPEDANCE............... 4 to 16 ohms (speaker or headphones) (0) 0] a More than 1.5 watts (with less than 10% distortion) into an 8 ohm load. RF OUTPUT IMPEDANCE ....................... 50 ~ 75 ohms FREQUENCY STABILITY ........................ Within 100 Hz during any 30 minute period after warmup Within +1 kHz during the first hour after 1 minute of warmup AUDIO FREQUENCY RESPONSE.......... 400 to 2600 Hz, within —6 db CARRIER SUPPRESSION ...................... Carrier better than 40 db down from the output signal SIDEBAND SUPPRESSION ................... Unwanted sideband is better than 50 db down from the output signal NEES PR ECR erect st cscaavanse sarees ss cccsvacas Image frequency better than 60 db down from the output signal HARMONIC RADIATION....................... Better than 40 db down from output signal SPURIOUS RADIATION ..............0.00000... Better than 60 db down from output signal (without harmonic radiation) EE UN OI ooo cciyce cic ccaschtne se ce cctvececssnenn IF frequency is 80 db or more down from output signal BEtEIVER SENSITIVITY .0...02......00-00c0te00 0.25 uV S+N/N 10 db or more meweIVER SELECTIVITY............:..000c00088 SSB: 2.4 kHz bandwidth (—6 db down) 4.4 kHz bandwidth (—60 db down) CW*: 0.5 kHz bandwidth (— 6 db down) 1.8 kHz bandwidth (—60 db down) * (with optional CW filter installed) TUBE AND SEMICONDUCTOR ............. COMPLEMENT c's FETS Transistors Diodes CULIVECRWES DOIN eraccctheonin sate xsiied.dansits coe 13.2" wide x 5.9"high x 13.2” deep MRR ES Rie eC a on ab coca aaeuxtnisieannnesaansn 37.4 Ibs. 2 - aq — — a ~ Lf AUN CHUEED-CHEAND-CHDED CREO ND- CRU DDD+COODRDHCRUOND-COOEDD~CUUEDDHCUDGDD=COOURD=G ORE DD-COOUUD+CODDDD+C HEU DHCOUEDD~CUOUOD=COULEDHCUDORD-GUEED~ COREG D+GEUUGD~CHGURD+CONGRD~CUURD COR EDD~CUDDOD~cOENOD~ctONED~cuueD | SECTION 2. INSTALLATION TeMAED+CUDDND COLD DD=CUENOD=COONED=CUUGUD>CONDED+CUREDHCHEUED+CUSEDD+CHOEUD-COEUED=CUNEOD~COOUED-CHODED=CUNGUD+CUEEDDH-GUNOOP+CUEEUD+COUSDDHCONEODoCUEUOD+CUODED+CHEEED+GODEOD+CUDDED~COEOSD=CHUNGD+CHOEDD-CUREDP+COOUDD~CUDDED-GUDDED-GHDEDD+CUEDED@CUREDD~COORDD-COUBUD-CODERD~CHUDDD-CHODUD~CHNGED=CUDURD+CRUERD+CREDED-GODEOD-CUDUEDH-CRDED-GONGED~CODEDD=CRURDDHCOBEED-CONUUD-COUD-CUERD-GQDGRD-GNONOD-CURGED=CORERD-CENEED+CONERD-cOREDDH-COEOOD-CODUED~COGUED~CHNEDD+CDUDDD+cEDORD+cOUURDocOREOD>cRECOD+ctetOD = SECTION 3. OPERATING CONTROLS Front View Panel 41) 42) 43) 44) 46) 47) AOUNP=CHONED—COEEED~COUEDD pBSdSEN Gora lov 13) 46 13 3.2 REAR PANEL CONTROLS @) REVOLT Use the RF VOLT control to adjust the sensitivity of the RF output function of the meter. Adjust it for a 2/3 scale rea- ding during CW transmission. (2) COOLING FAN This fan cools the RF amplifier section of the TS-820S to in- sure reliable and efficient operation. @) ANTENNA CONNECTOR This SO-239 coax connector should be attached to a suita- ble antenna for transmitting and receiving. See Section 2.4 for a discussion of an appropriate antenna. (4) BIAS CONTROL The BIAS control adjusts the bias voltage of the two S2001A (6146B) amplifier tubes. Tuning the control clock- wise increases the idling plate current of the tubes. Section 4 describes adjustment of the bias current. 6) $G SWITCH The SG slide switch controls the screen grid voltage on the final tubes. For tuning or neutralizing the TS-820S you can set the switch to the OFF position. Turn the switch back to the ON position for normal operation. The SG voltage is on when the switch is up and off when the switch is down. © TRANSVERTER IN JACK This is the RF input jack for input from a VHF transverter. @ TRANSVERTER OUT JACK This is the low level RF output jack for use with a VHF trans- verter. (8) GND (GROUND) LUG To prevent accidental shocks from the chassis, as well as in- terference, connect a good earth ground to this lug. (9) FUSE This fuse is a 3AG, 4 amp fuse which protects the power supply of the transmitter against short circuits. Never use a higher amperage fuse than the one specified. An improper one can cause extensive damage to the transmitter. When the fuse blows out, try to determine the cause before repla- cing it. 14 When the position of the AC Voltage Selector Switch is changed, it is also necessary to change the power fuse. For 120 volt operation a 6 ampere fuse, for 220 volt operation a 4 ampere fuse provided with the TS-820S should be used. AC VOLTAGE SELECT SWITCH This slide switch switches the primary of the power transfor- mer to select 120 or 220 VAC operation. (1) POWER SUPPLY CONNECTOR This 12-pin connector is used to connect an AC or DC power | source to the transceiver. (2) TRANSVERTER CONNECTOR This 12-pin connector is used to control an accessory VHF transverter. FUNCTION FUNCTION ALC 7 Transverter in Normally closed relay contact Occupied as terminal +210 VDC Ground No connection +210 VDC —100 VDC No connection Transverter in Ground 43) X VERTER SWITCH When VHF Transverter (TV-502) is connected to the trans- ceiver, the selection of HF or VHF is automatically accom- plished by setting the transverter switch to ON or OFF. PHONE PATCH IN JACK This is a phone patch input terminal for transmission of SSTV or other line inputs. 45) PHONE PATCH OUT JACK This is a line output terminal for phone patch or recording. It is also used for connection to the input of FSK demodulator SSTV. (6) SPEAKER JACK The receiver audio output can be connected through this jack to the external 4 to 16 ohm speaker. The internal speaker is disconnected when an external speaker is con- nected. 47) EXTERNAL VFO CONNECTOR This 9-pin connector provides a means of interconnecting the KENWOOD VFO-820, another external VFO, or an ex- ternal receiver. The interconnecting cable is provided with the VFO-820. The 9-pin jumpered VFO plug provided with the TS-820S must be inserted in this socket for normal transceiver operation. FUNCTION VEO signal FUNCTION Calibrator signal (9 VDC) No connection 9 VDC to internal VFO (pin 9) 9 VDC to external VFO VFO signal shield Ground 12.6 VAC Relay voltage (+ on transmit) REMOTE CONNECTOR ~ The REMOTE connector is an 8-pin socket for use in inter- connecting a linear amplifier, an external speaker, or another accessory item. (See Fig. 30) FUNCTION FUNCTION i relay contact Ground ALC-freeback 6 ALC threshold level approx. — 6V No connection Normally closed Occupied as terminal relay contact External speaker Load impedance 4 ~ 160 Ground Remove screw and Switch stopper plate stopper plate stopper to opposite side IF OUT JACK Receive signals from the final IF stage are supplied to this jack for monitoring waveforms of opposite stations. Frequency 8.83 MHz Output Approx. 0.67 Vrms. (ANT input more than ~- 3uV, load resistance 4.7 kQ) @0) CW KEY JACK Connect a key to this 1/4” phone jack for CW operation. Key opened terminal voltage approx. —65V. (24) RTTY KEY JACK This is used for FSK operation. A 2P plug should be inserted for connection to the switching circuit of a teletypewriter. 22) DC-DC CONVERTER CONNECTING HOLE DC-DC Converter (DS-1A, option) can be wired through this hole. For wiring, remove the cover plate. Lock lever by attaching stopper plate to opposite side screw Fig. 5 Changing Power Voltage from 220V to 120V 15 Ps AVo-cene~cnnny 4.1 PRELIMINARY PROCEDURE Set the MIC and CAR controls to zero and the MODE switch to LSB, USB, or CW to prevent accidental transmit con- ditions before tuning. The TS-820S must be operated into a 50 ~ 75 ohm antenna or dummy load with an SWR less than 2: 1. Random length wire antennas or light-bulb dum- my loads cannot be used. Conventional half-wave dipoles and beam antennas should only be used at or near their resonant frequency. Exceeding an SWR of 2:1 can damage the components in the output stage of the transceiver. Be sure to complete all of the required cabling, as described in Section 2.3 ~ 2.8. With a suitable antenna and microphone (or key) connected to the transceiver, set the TS-820S switches to positions des- cribed in Table 1. 4.2 RECEIVER TUNING Refer to Table 1 for the initial switch settings of the TS-820S for receiving, and then continue with the described proce- dure. TABLE 1. Initial Switch Settings for Receiving CONTROL LOCATION CONTROL en nn ee ae ene ene eee eigen rae ie ai pee ee cae a a SECTION 4. OPERATING INSTRUCTIONS UUEED+CHELEDCEEEED@CHUEEDoCUUEED-CHEEEDOCEEEDCHESEDoCEEUED©CUEEDD+CEDEED-CULEDD-CEEEEDHCOEDED+CHNEDDHCUEEDD+CUOEEDHCUDUED+CHEEEDOCEDAED=COEEDDHCUDEED=COUEEDHCEDUED=CUOEEDH=CULDED+CHOUEDHCUNUDD+COEUEDHCEELOD-GOEUDDHOUBDED=COUEEDHCEUED=COOUEDHCULDOD=COOUDDHGUEDD=COREEDHGENDED=COEEEDHOERDED>eHEEEDHcanOOD~ 2SK19( GR) : 2SC460(B) =O Sx Crystal Specifications 1. Type of holder: HC-25/U 2. Frequency: 5.5 to 5.0 MHz 3. Multiplication: Fundamental 4 Frequency tolerance: +0.002% at normal temperature Fig. 9 Crystal Oscillation Circuit 21 4.16 INTERNAL CROSS CHANNEL OPERATION The TS-820S contains a unique design feature which allows cross channel operation without a separate external VFO. The TS-820S's internal VFO is used together with the fixed frequency oscillaltor to allow reception and transmission on different frequencies. The fixed channel oscillator must have one or more accessory crystals installed for this feature to work. TRANSMIT RECEIVE CONTROL FUNCTION SWITCH CONTROL VFO VFO VFO Fixed channel VFO oscillator Fixed channel VEO oscillator Fixed channel Fixed channel oscillator oscillator 4.17 MOBILE OPERATION The compact size and solid-state design of the TS-820S make it ideal for mobile use, by using optional DS-1A. Be sure to use a mobile antenna which meets the require- ments described in Section 2. The normal operating procedures, described previously, ap- ply to mobile operation. The noise blaker should be used to reduce ignition and impulse noises for clear reception. Re- member that during transmission the transceiver draws about 15 amps so be careful not to drain the car's battery. 4.18 DX OPERATION (Use of PROCESSOR) In SSB operation (particularly during DX operation), if your transmit signals are too weak for your party and cannot be received clearly by your party, the talk-power can be in- creased by using the speech processor. The speech processor is activated by simply pulling the COMP LEVEL knob toward you. ADJUSTMENTS 1. Connect microphone and set the transceiver in transmit mode (USB or LSB). 2. Set the METER switch to COMP. 3. Speak into the microphone in normal tone of voice. The meter pointer will deflect according to the strength of your voice. 4. Adjust the COMP LEVEL knob so that the meter in- dicates about 20 dB on the COMP scale at peak inputs. 5. Next, set the METER switch to ALC. 6. Speak into the microphone in normal tone of voice. 7. Adjust the MIC (MIC gain) knob until the meter pointer deflects into the ALC scale. 22 OPERATING PRINCIPLE The speech processor is inserted between the first and se- cond stages of the microphone amplifier as shown in Fig. (A). The MIC gain control is used to adjust the B.M. input level. Processor MIC Gai MIC AMP 1 ON ON ain Ee MIC AMP 2 OPERATING CHARACTERISTIC: The speech processor functions so that the output of the MIC AMP 2 is maintained constant when the MIC input level exceeds —65 dB, as shown in Fig. (B). It also func- tions so that the output remains unchanged when the processor is set to ON and OFF at —40 dB of MIC input level. The COMP LEVEL knob is used to adjust the compression level. It does not adjust the output of the microphone amplifier. MICROPHONE SENSITIVITY For proper function of the speech processor, the range of microphone input sensitivity is limited. The TS-820 is fac- tory adjusted to operate the processor at the input sensitivity of MC-50 (see Note below). If the sensitivity of your microphone is higher (e.g. —30 dB) than MC-50, the output of the MIC AMP 2 is decreased when the processor is set to ON. See Fig. (B). Processor OFF Range adjustable by COMP LEVEL knob Processor ON -20 — 40 MIC AMP Output 60 70 - 60 == 5) = 40 —-6() MIC Input (dB) Fig. (B) In this case, insert an attenuator as illustrated on page 6 and adjust the MIC input to the proper level. NOTE: MC-50: Sensitivity to be —55 dB +3 dB at about 5 cm from microphone. 4.19 RTTY OPERATION For RITY operation, the use of demodulator and teletypewriter is essential. The demodulator should be de- signed to operate from audio inputs and equipped with a fil- ter for 2125/2295 Hz (NARROW, 170 Hz shift) or 2125/2975 Hz (WIDE, 850 Hz shift). To key-in the FSK circuit of TS-820S, insert a relay coil into the closed loop circuit of teletypewriter and connect the re- lay contact to the RTTY KEY jack on the rear panel. Fig. 10 shows the relationship between the transmit and receive fre- quencies of TS-820S. The frequency shift of the FSK circuit is preset at the factory to NARROW but it can be changed to WIDE by inserting the connector as shown in Fig. 11. When operating at the WIDE position, turn the IF SHIFT knob in the “—” direction by about 1.2 kHz so that the mark and space signals are well balanced during reception. If a CW filter (option) is used for NARROW operation, change the position of the connector of the IF unit (refer to ‘‘Operation with CW Filter’). Setting the MODE switch to FSK automatically decreases the input power of the final stage, permitting a long time of continuous operation. 4.20 SSTV (SLOW SCAN TV) OPERATION SSTV operation can be accomplished by simply connecting the output of SSTV camera to the PHONE PATCH IN jack (or MIC connector) and the input of SSTV monitor to the PHONE PATCH OUT jack (or SPEAKER jack). When transmitting signals from the SSTV camera, adjust its output so that the input power of the final stage is less than 100W (less than 125 mA Ip). RECEPTION CAR CW FILTER POSITION SSB FILTER 8831 8832 (kHz) MARK (WIDE) 8829.85 MARK (NARROW) SPACE 8830.53 8830.7 Fig. 10 RTTY Frequency 4.21 OPERATION WITH A PHONE PATCH The TS-820S has rear panel jacks to facilitate using the TS-820S with a phone patch. The PHONE PATCH OUT jack has an impedance of 4 ~ 16 ohms and the PHONE PATCH IN jack requires a high impedance input. See the instruction sheet of the phone patch for cabling instructions. 4.22 USE OF MONITOR SWITCH To monitor the quality of transmit signal during SSB operation, set the MONITOR switch to ON to demodulate part of transmit IF signal. This feature is useful when checking modulation conditions or adjusting the RF speech processor. When monitoring, use a headphone to avoid howling effect. Note that if the H. SW switch is OFF or the DRIVE knob is incorrectly adjusted, the ALC circuit does not operate properly, causing the level of transmit IF signal to become extremely high which results is distortion in the signal being monitored. 4.23 NOVICE OPERATION The Kenwood TS-820S offers the unique opportunity to the beginning amateur of buying a top quality ham rig which adapts to novice operation at very little cost. So the initial equipment investment is good for what ever level of license to which the operator advances. For the novice to operate the Kenwood within the legal po- wer limitation, all he has to do is remove one of the final tu- bes from the final RF section and replace it with a low cost module available from your dealer. Alternately adjust the carrier level control to keep the plate input power below 75 watts (approximately 90 ma). Adjusting the carrier level yields much less power output because it reduces the effi- ciency of the tubes. 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These parts function together with the RF RF BOARD (X44-1150-00) arte The RF Board holds the ALC amplifier circuit and the block VFO UNIT (X40-1110-00) . . a] P “fo . . it f ie ae coheed a ps i ie toe The PLL circuit is controlled by VFO signals, thus the fre- a: : he sa k Defer hat caaecrereuit quency stability of TS-820S is virtually determined by the sta- NR ne ne bility of VFO. The unit is composed of 2 FETs, 2 transistors and 3 diodes. Its oscillation frequency is set to 50 ~ 5.5 MHz. Hees F Vi 12BY7A r Fu | a. yR2 Toles | - Hoh “4 Hols A Io RES r= Hol =) Hoy 3008 ‘a ros a vi or ted : le? = é] T ta | or e-—— el ry PRE 5 Ie olor ———— — — (999099900909) SOTTO GOD) COIL PACK (xX44-1140-00) AUX LI4 26 L139 2t LI2 1 LH 7 110 35 48 WY irs 8 9K ry H ca? 39R c4 Ic ' y 90000 anno TTT TTT i my ne - esos VFO (X40-1110-00) — a Q1 :3SK22(Y) Q2 2SK19 (Y) Q3,4 :2SC460 (B) Fig. 15 VFO Unit 27 PLL Unit (X60-1010-00) This unit is composed of the PD Board and the VCO Board VFO can be obtained for each band. The PD Board holds to function as a local oscillator for the transmitter and the re- crystal oscillators for each band, 2 mixer circuits, waveform ceiver. Stabilized oscillator output like that of the built-in shaping circuit and phase comparator. It uses VFO as a = - -_———} 2 2SK19 (GR) 12SA495 (Y) + TD3400 AP =MC4044 P 1 2SC1345 (E) ~12,17 : 2SC 460 (B) dt OF9 dee 629 + Moe G14 Wg Oe °o °o | = °o fo} ON ne o Mm = i tary >| 8 < i ML Bee < fo) 2a) ce P=) cL O01 Liu Alogi 47 TUN NOR _— a T f8 TP a 9 + [vor | lege | i [erie (cee ee : oe | | | | | | | | | | | | | | | | | | | | | | | | | | | | nH | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ra) 7 - oo 1 = 20 ou’ nnn So af 2 zim a! 6406 5 ' A585) ooaHt ~ L2lo8 ~o | DO eit: a xxxXOvo o ome HYDAD o! NANMN ° = ; ' oe 5 Luge o ~ 2 rales = = aa [vost &: 2 : Mm ooococd al . 38, 3S \ 7 ST cue nce ee 219 ' 2 a fe) rt S10 aa 290 HH | « 19 9 wip gt © g x SHE a2 c99 yt og 8 i iit 4} = pe fo—4F, ° g f o Ble tes +, SS ee a En ee Fig. 16 PLL Unit 28 —~ aie 2 standard oscillator to produce a voltage to control VCO (vol- tage controlled oscillator). It also forms a full electronic IF _ shift loop using an external carrier signal. The VCO unit is composed of FET type oscillators for each band, buffer am- plifier circuit, and the oscillator shut off circuit at the time of fault of the PLL circuit. The oscillator frequency is controlled by the control voltage from the PD Board. The bands of both units can be selected by means of the diode switches. Counter Ass’y Unit $8 2 FF soot sez “9 § ac Seo BM © Se Se a See Se a= =a ie = = = f= ies Qa ies Ain fe ice a ' Vee RO FEET i fo] COUNTER Assy (X60-1020-00) ig ara R14 100 TPS RIT 470 LIS 470p RIB i al ii 8 ‘9 top pa 4 shod! COUNTER ASS’Y UNIT (X60-1020-00) (TS-820S TYPE ONLY) This unit is composed of the counter mixer board that produces operating frequencies by mixing the VCO output (local oscillator signal for the mixer) with carrier signal, and the counter board that counts the frequencies in digits. These units are housed in a rigid shielding case. Since the frequencies are read by synthesizing all the local oscillator signals, accurate operating frequencies are always counted under any operating conditions. The counter output is pick- ed up as a signal to drive the indicating tubes and is fed to the display unit. ws ae 2 sSesoatraz ee? (olelefololelelelelerelelolele1e —-— = P F 6 6 6 G3 ° LE RBZ 47K aT ic) Or R2 180K 1C1 =: SN76514N IC 25 : TO3490BP Icé ‘ uPB 2490 4 D10 Q1,3-7,9,21 : 2SC460(B) Di~s Q2 Q6,12~19,22: 2SA733(R) Q10,11,20 2182588 09~12,15,18~28: 1S1555 013,14,17 : SV-O3 > 2SC945(P) ow : BZ-220 : 3SK22(GR) Sonn | | Pooogo -———- : | | | (0 SSS ES SSS 1C1,2,7,6~11,24 : TO3490 BP 1c3 > T03472 AP 1C4,23 + TD3400 AP Ics 2 SN74HOON Icé : SN74176N IC12~16 > TO3475AP 1C17,19,20,22 : TO3450AP 1C 18,21 : TO3460AP IC25 :TO3442 AP IC 26 > TD3404aP Q1,2 > 2SC945(R) ! o el ° 9 9 9 1 " f 20 i) ao 3015 1,2 Vee afenasce 1C12 F 3.4 GND 20.10 4030 7 Fig. 17 Counter Ass’y Unit 29 DISPLAY UNIT (X54-1170-00) (TS-820S TYPE ONLY) CAR ASSY UNIT (X60-1000-00) This is a crystal oscillator that functions as a carrier for the generator during transmission and as a BFO for ring detec- tion during reception. The output is partly applied to the PLL Unit and the COUNTER UNIT. This unit uses a 6 digit fluorescent indicator to indicate ope- rating frequencies counted by the counter unit. All the digits glow green to provide many hours of fatigueless operation. DISPLAY UNIT (X54-1170-00) LD8109 CAR ASSY (X60-1000-00) CAR-1 (x50-1310-00) “7 (> =a - a ean a eer ee eee Se ms HO FSW Q1,2 :28C460(B) FSK Q3 :2S8C735(yY) — “Ae # L2 5% pe 330 pee athe rae Di~4 :1S1555 j x[sl fs al ty teerets Lt bo} ess eT oefs[te fase elfs fe Js SEF) use : = ete g eee BA ca 3, eex5kKH: 2 F 2 if a esseieere Bisel bai es cw ipc -

CHOUED=CUODEDCOOOEDOOOEE NUUED~CEDEDD+CHLED-CHEDED+CUELED-CUDED-CHEEDHCDEUEDHCHEEED-CHEOED-CHEDED+CUEEED+CHEUED+CHUDDD-CUEDEDHCUEGEDACUUUEDH-CUUURD-CUOUEDHGUEEODHCUCUGDHCUEUGD=CUELOD+CULEED+CUNEED+CUNEDD+CUEDDD+CUUNGDH=CHUGEDHGOOOED=COUOED=GUNNED=CUENODHCOUEED=CHOUSD+CUENED>CUNUND=CHUEED=CONNED=CUUUODHCUOOOD=cOOROD>CORORD=cOUERD>COREE 42 TOP VIEW OF THE TS-820S IF UNIT (X48-1150-00) COUNTER ASS’Y UNIT (X60-1020-00) INDICATOR UNIT (X54-1120-00) DISPLAY UNIT (X54-1170-00) 5V-AVR UNIT (X43-1220-00) VFO UNIT (X40-1110-00) Pees .. ie COIL PACK UNIT (X44-1140-00) FAN RF UNIT (X44-1 150-00) S2001A ST Reg eae ie aaa CUUNNDoCENNDD~COEEGD-COURD-CHEEED+ CRONE D-cUEOND~CHODED~COREOM, | | BOTTOM VIEW OF THE TS-820S ‘Saanan-coneno-censoo-ceancussse-casuey-couenr-connnn-casnne-cuusno~ctannoocunenocceggonccnnoen-cgene-cusesy-cansns-canune-ctanne-cututonetedgonetednonctentoccesenoccunneoccennnoccnnnno-cgneno-cneetoscnueseautny-conan sce -antn-atunD-atntt IIIS CARRIER ASS'Y UNIT FINAL UNIT (X60- 1000-00) (X56-1200-00) PLL ASS'Y UNIT (X60-1010-00) MARKER UNIT (X50-0005-01) ( ‘x. RECTIFIER UNIT (X43-1090-02) POWER TRANSFORMER HV UNIT (X43-1110-00) RELAY UNIT (X43-1190-00) EO VOX-VR UNIT (X54-1 190-00) AF-AVR UNIT FIX-VOX UNIT (X49-1080-00) (X50-1350-00) ee TOP VIEW OF THE TS-820S POST Le IF UNIT (X48-1150-00) COUNTER ASS'Y UNIT (X60-1020-00) INDICATOR UNIT (X54-1120-00) DISPLAY UNIT (X54-1170-00) 5V-AVR UNIT (X43-1220-00) VFO UNIT (X40-1110-00) r-okaphanien cotinine’ = 315 } ent ao UB a ; tie ; we (X44-1140-00) IO § RF UNIT (X44-1150-00) S$2001A 42 OFFO ONO _ S10-1 F rs youeuN = RF-PRO SW MON SW OOFF = ON $14 *-e UUEED CEEEED CEEED DS CORDED CUEEDDCEDEDD CLEUED © CHEDDD CUUCED © CHEEED © CUEEDD © CLUDED © CUDEED + CHEEED © CUEUDD © CHUDED©CUULED © CHEDED CHEEEDSCHOLED*CUUEODSCUDEED*CHAEED + CUDEED=CHUEEDSCUDEED*CHEEDD=CUIEED-CHELED=CEEGED+CUUEED©CEEEGDOCUEEDD-CEEEED=CULDOD = CEEEED+CUNEED +CUEEED=CHREED 3SK35(GR) D2,3,9,10 : VO6B ‘VOX DELAY} [ANTI VOX] [VOY GAIN) Q4 :28C733(Y) 046 1182588 Qs :2SCI51S(K) 05,7 —31S1555 Ps RF UNIT (X44-1150-00) Vi 1 12BY7A Y igen RFI Ey > > 4 > = = 9) [| 5 al 2 2| Own nun AGC 11 (X48-1150-00) Fd $15-1 pa. 1F UNIT F4 &2 83 WOBNDP YIN = R43 10x] R41 10K > a c Ey a Gi $ = x Ic39 a7 50V 0047 1.4Ky ania C10 100P 500V FINAL UNIT L_diew (X56-1200-00) vrRa-2 10K (B) 53.01 JH @aaddd c3woP SKV PO! aQ + o ro) o = ° 7 n CT 1000P S00V C26 220P SOOV “CB 6B0P § a——| ay Zz 6 Pees —>=— —— 5 oz y im 1 « R4 100 ~ Rs @)Q) R3 100 1/2] 000 1/2W ln fo ey ef e nw {il Lda cy2 Pa 5 | ll li z -FEEEEEEECRSICorEE EEE RIO 470 1/8W BPP POOP OOOO OOS PP POP OPPO POCO RL-2 cor fe RL-1 c4 or c2 H 2200 25V c1 2200 25v > \ 9. > 1) L > A 4 a) = CAR ASSY UNIT \ (Xx60-1000 - 00) 3 il STBY SW GNO Ey nee 5 cia OS oi su O 5 SEND 5 voo GND cs .OV R A RL-13 RL-1 Oo RL-14 RL-12 RIT SW | RL-3 RELAY UNIT (X43-1190-00) | = Coaee a qellga 3 WME-TOQMBOQ09O! rr-T2uxuzuzu SSaGOsLSB555 FX 1 De. Fx _ FIX-VOX UNIT (X50-1350-00) [3 S >@>o0 = GNI GNI MV one BBeS an | (X60-1010 - 00) [BB T PLL ASSY UNIT o =Nw | 8 BAND SW use _ 25K. oe vFo-R cw 4 .s8 ° ° ° ° caL RMTO j OFIK-R oe: arae L Fixo OFIx FUNCTION MODE S5-1~4 S6-1~8 | HV UNIT - oli we (X43-1110-00) XVTR IN r 1 el < -—— malted |{I| RECTIFIER UNIT ; 7 x ? (X43-1090-02) XVTR OUT R3 680K tee ©@|o@! [ale oe eel |) race | (4. [ee | wl 8 ny tr = Boh " | scood | | | — ety cB J cno | al is F ae 04 D3 a ; ge Di~4 :SEL-103W Si l= ie eo egeees —— — fk me J -k <5 INDICATOR UNIT ae leat l (X54-1180-00) scoul as 470 [D8 J xc0 POWER ———s ee be Ifrezn enc, A 210 | MARKER UNIT (X52-0005-01) rT 7) dl end lesen wn OF M100 ) a oes ee ee 42J) | | veo unit *f arin. [8 81 Lew III axge|™ (X40-1110-00) =-7 Cupane se seh Boreese im | COUNTER ASSY UNIT DISPLAY UNIT l =e ah i @ acme ie calle | s28oy"s 5 c4 33P] 5 ee ee > Is = Fe) (x60- 1020-00) (x54-1170-00) _— ABGE se Pra gy | | 1N6O, = te 3 8 os aya | ee | #28 5V-AVR UNIT 8 alors. ans iz | [spel ss (X43-1220-00) __ ane SaenERER ESD if Q1,4 :2SC373 or 25C458(B) QURMETSOREE Peden PLUG D1~6 :VO8J D7: VO6E RF 21 aE Se — Os~11 : VO6B '9 0 goMP an? eh. 74° 216 25.5 | foo | rae ony N ae ae | ; La es 235 1.82 959, I <3 > C 5 METER Ex 88 vi ee ae | pens | Sa ee “al A ~ [elejeleelelelelelo) 1 S2 BAND SW | Es al al Sq] By Si7-1 $3 L ——— Satoh ae a : FAN HEATER SW (a case of VDE plug) TS- 820s 43 2 lf @ —- P é - q a s = — . 4 7 2 ~ 4 7 .-— 7 = . > “| —= = "= ot a +e oe - _ ff an ’ .* : 2 - * } Te , - a .s — > oy 7 > * ” . c 7 a # .--e Sa a _- , + at - ? = >. ai ») te oe Ts ‘ , - Dm Ad hy sea - edit ‘S -—_—-= ee ow Gr) Rc — > » ® A product of Sy I-KENWOOD CORPORATION ; 6-17, 3-chome, Aobadai, Meguro-ku, Tokyo 153, Japan © 7456 PRINTED INJAPAN B50-2529-00 (G) (K) (W) ia

Kenwood TS-820, TS-820S

Object/Artifact

Radio Alpha

TS-820S

Name/Title

Description

Category

Made/Created

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Date made

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