Sommerkamp TS-664S User manual

CITIZENS BAND TRANSCEIVER
INSTRUCTION MANUAL
MODEL.: TS-664S

SPECIFICATIONS for TS -664S
Semicond ctors : 2 Integrated Circ its,
2 FET, 16 Transistors.
1 SCR, 22 Silicon diode.
1 Varicap, 3 Zener diode.
Transmitter System: Synthesized Crystal controlled.
Coliector mod lation AM.
Freq ency: 64 Channels on 27 MHz.
Inp t Power: 10 Watts at 13.8V DC.
Band Width : 8 KHz. (max.) ,
Antenna impédance: 50-52 ohms.
Receiver System: Do ble conversion s perheterodyne,
crystal controlled.
Sensitivity: 1/iV or better for lOOmW o tp t,
10 dB signal to noise ratio.
Intermediate Freq ency: Ist 1. F. 10.7 MHz, 2nd I.F. 455KHz.
Receiver Selectivity: 40 dB down at 10 KHz. or more.
Sq elch Sensitivity: 2 A.
A dio O tp t Power: 2 watts in 10% distortion.
Power So rce: 11—16V D. C. Negative Gro nd.
F se 5A.
Microphone: Dynamic type with press-talk switch.
Impédance 500 ohm.
Speaker: Dynamic type, Voice coil Impédance 8 ohm.
Size: 156X58X205 mm.
Weight: 2.3 kg.
Accessories: Mo nting b Mo nting hardware,
power cord.
SOMMERKAMP ELECTRONIC SAS
СН-БЭОЗ LUGANO, RO. BOX 17Б .
SWITZERLAND
TEL. [phone] TELEX: 79314

CONTROL LOCATIONS:
EXT. SP. JACK' PRESS-TO-TALK BUTTON
MICROPHONE
MOBILE-
BRACKET
POWER-SW/VOLUME
KNOB
SQUELCH/ANL-OFF-
KNOB
RF POWER & "S" METER
RECEIV1NG LIGHT—
CHANNEL SELECTOR KNOB CALL BUTTON
-MICROPHONE JACK (CALL CIRCUIT OPTION)
-TRANSM1TT1NG LIGHT
PACKING LIST
Beside this man ał, the carton shall contain the following items:
1. Transceiver TS-664S.
1. Mo nting bracket.
4. Screw for Mo nting bracket.
1. Microphone hanger.
1. Microphone.
2

GENERAL DESCRIPTION
Yo r SOMMERKAMP TS-664S transceiver has been désignée! for contino s
heavy d ty mobile and base station application.
It сап be operated with a microphone and internal speaker or handset, speaker/
microphone combination, telephoneset incorporating a tomatic voice operated
transmit/receive switching, external sélective calling with a tomatic answer
back and many more.
GENERAL
The transceiver is designed to operate from 12 Voit DC powers pply as a
base or mobile station. It’s straght forward 64 channel capability allows it to
operate on any channel within 26.965. and 27.595 MHz.
RECEIVER SECTION
The receiver section is designed to receive amplit de mod lated (AM/A3)
signais in the 26.965 to 27.595 MHZ. (11 meter) citizens band .
The niq e combination of low noise Field Effect Transistor (FET), do ble
conversion, a combination of mechanical ceramic, and L/C filters, f i ly a to
matic noise limiter (ANL) and a hifi q ality speaker amplifier will give yo
exceptional réception q ality in this fine piece of eq ipment.
In addition, the above combination of the latest technology provides yo with
a sensitivity and nwanted signal rejection and noise s ppression available
previo sly only in space and military comm nication eq ipment.
The power s pply of the receiver RF. IF. and oscillator section is stabilized
by an extreme sharp c t-off Zener diode to obtain the high sensitivity and
nwanted signai rejection. The f ily a tomatic sériés gâte noise limiter, which
virt ally c ts off the a dio o tp t d ring ignition noise p ises, is defeatable
to make even the weakest signal a dible which otherwise wo ld be e t off
by the threshold level of the ANL switching diode.
The high sq elch sensitivity is achieved by sing a seperate sq elch detector
and switching circ it with a caref lly balanced hystérésis. The trans-
formerless hifi q ality a dio power amplifier will drive any load between 8
ohms and indefininite s ch as internai speaker or external speaker/microphone
or headset combinations having the above impédances.
The meter indicates the field strength d ring réception of a signal.
— 3

TRANSMITTER &. MODULATOR SECTION:
The trasmitter section is designed for contino s heavy d ty transmission of
amplit de mod lated (AM/A3) signais in the 26.965 to 27.595 MHz. (11 meter)
citizens band.
The transmitter consists of 2 crystal controlled oscillators incorporating 20
crystals. The o tp t of these oscillators are synthesized in a dass B mixer,
followed by a do ble t ned filter, Class ABI b ffers, and a highly efficient
collector-mod lated class C driver and power o tp t stage, co pled by séries
and pi-matching filters to the antenna jack.
The mod lator consists of an inp t a dio filter, ALC amplifier integrated pre-
and power amplifier and mod lation transformer. This gives yo the lowest
possible mod lation distortion and p to 100% mod lation.
The inp t is designed for 500 ohm dynamie microphone or 32 ohm speaker/
microphone combination with a 1K ohm resistor in sériés.
RECEIVE/TRANSMIT S ITCHING
The receive/transmit switching is done by a single pole, single throw switch
in the microphone and a combination of NPN and PNP switching transistors.
METER
The combination meter provides yo with the following f nctions:
D ring receive mode .............. it indicates the incoming signal strength.
D ring transmit mode .......... it indicates the o tp t power.
MOBILE INSTALLATION
Mo nting bracket and screws are s pplied for mo nting the transceiver nder-
neath the dashboard. Microphone hanger and screws are also s pplied. For
electrica! connection, first make s re that the transceiver is t rned off.
Connect the red wire to the ACC terminal of the ignition switch or + terminal
of battery and gro nd the black wire to the chassis of the rehicle. The black
wire sho ld be gro nded as short as possible to minimize noise interférence.
This transceiver is designed for se with the negative gro nd system.
- 4

50 OHM ANT.
Connect the antenna pł g to the antenfia jack with an SWR-Meter inserted
into the antenna cable.
Connect the microphone to the microphone jack.
Switch the transceiver ON.
The receiving, meter and the channei iamp, shali light p.
T rn the sq eich control to min. (ANL OFF)
T rę the Vol me controi to max. Until yo hear a r shing so nd from the
speaker.
Swith the channei selector to CH. 1.
P sh the transmit b tton on the microphone and check with the SWR-Meter
Immediately the SWR of yo r antenna.
The SWR m st be less than 1 to 2. Do this within 3 seconds, beca se if the
SWR is higher than 1 to 2 it is very likely that the transmitting transistors
will be damaged if yo operate the. transmitter too long with a antenna
having a too high SWR. Also read caref lly the recommendations on
antennas.
NOTE: In case the SWR is too high, the A tomatic protection circ it will
switch off the transmitter.•'
If the SWR is less than 1 to 2 contin e Checko t, if it is more than 1 to 2
repair or replace yo r antenna.
5

Check that the meter needle is near the red mark d ring transmitting. Talk
into the microphone. The meter needle shall move a little. Release the trans
mit b tton and switch the channel selector to channel 1,2 etc. ntil yo
receive a station.
Wait ntil this station stops to transmit and t rn the Sq elch control slowly
to max. Until the backgroun noi.se just isappears. When the station Starts
to transmit again, yo will hear this station, b t yo will not hear the back
-gro nd noise d ring non transmitting periods.
OPERATING INSTRUCTONS
The transceiver is ready to operate when it is installed with an antenna
properly connected. Note that the comm nication range differs depending pon
the environment where the transceiver is operated.
Yo may reach 30 or 40 kilometers where no obstacle exists, b t the range
may be limited to 5 or 6 kilometers in cities where many high b ildings
dist rb the comm nication.
1) T rn the set on by switching the LOW CH-OFF-HIGH CH. snap switch to
the desired channel range and the channel dial will be lighted. T rn
the vol me control clockwise to increase the a dio so nd. Note that the
vol me control knob is only for adj sting the a dio vol me, not to in
crease the transm itting power.
2) Set the DELTA-TUNE for best réception.
3) T rn the sq elch control clockwise ntil incoming noise is eliminated. Do
not t rn it excessively as the sensitivity may be red ced.
4) T rn the sq elch control co nter-clockwise to switch off the ANL
(A tomatic Noise Limiter).
5) T rn the channel selector knob to the desired channel.
6) For transmitting, press the b tton on the microphone and speak into it
normally. Release the b tton for receiving.
METER
The meter reading indicates the signal strength at receiving, and f nctions as
an o tp t indicator at transmitting, and the meter pointer sho ld be within
the red zone nder the normal conditions.
CIRCUIT PROTECTION INDICATION LAMP
The lamp is on when the antenna is mismatched, and the transmitting circ it
will be e t off.
6

COMPLETE PARTS LAYOUT
SW-l CHANNEL SELECTOR НОТА frf SW.
I 1 —

BLOCK DIAGRAM
О
12

PARTS LIST for TS-664S
DESIGNATION PARTS NAME PARTS N0.
MP-201 Front Frarne. 483014-S
MP-202В Chassis Frame. 502035
MP-203В Back Pannel. 504327
MP-105 Cabinet Cover (Upper). 483016
MP-124 Cabinet Cover (Lower). 502034
MP-107 Mo nting Bracket. 484085
MP-303 Front Plate (L). 494187-L
MP-304 Front Plate (R). 494187-R
MP-360 Brand Plate. 504326
MP-361 Back Plate. 504327
MP-ПО Mo nting Bracket for Meter. 484064
MP-208 Mo nting Bracket for O tp t Transformer. 484080
MP-362 Heatsink for IC. 504300
MP-353 Heatsink for 2SC1237 (2SC1307) A. 494251
MP-354 Heatsink for 2SC1237 (2SC1307) B. '494252-
MP-211 Meter Lamp Reflection plate. 484063
MP-212 Channel Indicator Screen. 484107
MP-214 Mo nting Bracket for Channel Lamp. 484108
MP-111 Call Switch Contact. 484086
MP-112 Call Switch Spring. 484087
MP-307 Knob for Delta t ne Control. 494199
MP-117 Knob for Channel Selector. 484116
MP-17 Knob for Vol./Sq . Control. 474011
MP-118 N t for Channel Selector. 484073
MP-120 Screw for Mo nting Bracket. 484098
MP-363 Channel Indicator Plate. 504325
MP-356 Heatsink. for 2SC495 (2SC1957). 494250
MP-19 Call B tton. 484056
MP-5 Mo nting Bracket for Speaker. 474038
MP-109 Mic Jack Mo nting S pporter. 484084
J2 EXT. Speaker Jack. SJ-296
J1 Antenna Jack. MRM/INCH
J3 Microphone Jack DIN Type 7P. CS 279
13 -

PARTS LIST for TS-664S
DESIGNATION PARTS NAME PARTS NO.
VR5 Variable Resistor (Vol me) 50K ohm. VR1650KB
VR4 Variable Resistor (Sq elch) 10K ohm. VR1610KBS
VR6 Variable Resistor (D. T ne) 10K ohm. VR1310KBS
VR11 Semi Variable Resistor 100K ohm. SVR100KF
VR12 Semi Variable Resistor 5K ohm. SVR005KS3
VR2, 7 Semi Variable Resistor 10K ohm. SVR010KS2
VR3 Semi Variable Resistor 100K ohm. SVR100KS2
VR1 Semi Variable Resistor 50K ohm. SVR050KS2
T3, 4 RX. RF. T ning Coil. 089-905
T5, 6 I.F.T. 10.7 MHz. 089-901
TU, 12 TX. Mixer Coil. 087-904
T10 37 MHz OSC. Coil. 087-905
T7 i.F.T. 455 KHz 089-902
T8 1. F.T. 455 KHz. 087-102
T9 i.F.T. 455 KHz. 145-101
LI RX. 10MHZ OSC. Filter Coil. 145-901
L2 TX. 10MHZ OSC. Filter Coil. 010-909
L3, 4 TX. B ffer T ning Coil. 005-905
L5 TX. Driver T ning Coil. 005-906
L6 TX. Final T ning Coil. 005-907
L12 Delta T ning Coil. 011-915
L9, 10 TX. Power Choke. 010-907
L8 TX. Antenna matching Coil. 145-902
L7 TX. Final matching Coil. 145-903
L ll TX. Final Choke Coil. 005-903
14 -

PARTS LIST for TS-664S
DESIGNATION PARTS NAME PARTS NO.
ЕР-201 Power Cord with Contact & F se holder. W-002
Fl F se 5A. F-5A
МMeter. D33B35R
SP Speaker. SP-70-8
PL1-4 Pilot lamp 14V-80mA. PL-14-80
SW1 Channel Selector Rotary Switch. S32C-4632
SW2 Toggle switch. 8A-2021
MIC Microphone Complété. 22-256-28
EP-202 Socket for Crystal nit 8P. XS-8P
EP-203 Socket for Crystal nit 4P. XS-4P
ICI Integrated Circ it. TA-7200P
IC2 Integrated Circ it. TA-7205P
TRI FET. 3SK-40
TR9 FET. 2SK-30A
TR18 Trans.istor. 2SC1307
T R16, 17 Transistor. 2SC1957
T R. 2,3.4.5.8.13.14.15 Transistor. 2SC1675
TRIO Transistor 2SC1096
TR7 Transistor. 2SC1739
TR12 Transistor. 2SC1741
TR11 Transistor. 2SA634
TR6 Transistor. 2SC945
SCR SCR. 2SF656
D9 Silicon Diode. 1S1555
VD1 Varicap Diode. 1S 2689
D23, 10,11, 12 Silicon Diode. 1N4002
D1 •—8,13-18,20-22 Silicon Diode. 1S2473VE
ZD1, 3 Zener Diode. WZ-070
ZD2 Zener Diode. WZ-090
Tl Mod lation Transformer. EI-54-664S
T2 Power Filter Choke Transformer. EI-24-732P
CF Ceramic Filter. CFM-455H
15 —

LIST OF CHANNEL FREQUENCIES
CH. N0. LOW CH. (MHz) HIGH CH. (MHz) CH. N0. LOW CH. (MHz) HIGH CH. (MHz)
1 26.965 27.285 14 27.125 27.445
2 26.975 27.295 15 27.135 • 27.455
326.985 27.305 C 27.145 27.465
A 26.995 27.315 16 27.155 27.475
4 27.005 27.325 17 27.165 27.485
5 27.015 27.335 18 27.175 27.495
6 27.025 27.345 19 27.185 27.505
727.035 27.355 D 27.195 27.515
B27.045 27.365 20 27.205 27.525
827.055 27.375 21 27.215 27.535
9 27.065 27.385 22 27.225 27.545
10 27.075 27.395 E27.235 27.555
11 27.085 27.405 F 27.245 27.565
11A 27.095 27.415 23 27.255 27.575
12 27.105 27.425 G 27.265 27.585
13 27.115 27.435 24 27.275 ■ 27.595

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MODEL TS-B64S

PRINTED CIRCUIT BOARD PARTS LAYOUT

MICROPHONE JACK
The 7-pin DIN standard accessory jack has the following internai connections:
1. Internai speaker (Z 8 ohm) 5. N/C
2. AF. o t for sélective calI. 6. -+T2V for VOX nit etc.
3. A dio o tp t (Z 8 ohm-10K ohm) 7. Transmit/Receive switching.
4. Microphone inp t (Z 600-10K ohm)
Always operate the transceiver with the microphone pl g inserted in the .microphone
jack, or with the following external connections:
I. Microphone with VOX. 2. Headset or Telephoneset with PTT.
3. External microphone 4. Headset or Telephoneset with VOX
о
°5 2 4° I
03 K
-0760} H
-o.
J
Microphone
60 0-10K ohm
O
°5 2 4°
o3 îo
?y<^
32 — 10K ohm
Speaker
VÜX
|l2V+ Voice Control
Unit
Ф600-10K ohm
Microphone
5. External microphone/speaker with PTT. 6. Internai connection
Switch

CIRCUIT DIAGRAM
MODEL TS-664S

PRINTED CIRCUIT BOARD PARTS LAYOUT
FUSE HOLDER ;W £ ; SA