GENERAL DESCRIPTION Your SOMMERKAMP TS-727G transceiver has been designed for continous heavy duty mobile and base station application. It сап be operated with a microphone and internal speaker or headset, speaker/ microphone combination, telephoneset incorporating automatic voice operated transmit/receive switching, external sélective calling with automatic answerback and many more.
TRANSMITTER & MODULATOR SECTION: The transm itter section is désignée! for continous heavy duty transmission amplitude modulated (AM /A3) signais in the 26.965 to 27.275 MHz. (11 meter) citizens band. The transm itter consists of crystal controlled oscillator. The output of this oscillator is foilowed by a tuned filte r, and a highly efficient collector-modulated dass C driver and power output stage, coupled by séries and pi-matching filters to the antenna jack.
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50 OHM ANT. Connect the antenna pług to the antenna 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 lamp shall light up. Turn the Squelch control to min.
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OPERATING INSTRUCTIONS The transceiver is ready to operate when it is instalied with an antenna properly connected. Note that the communication range differs depending upon the environ ment where the transceiver is operated. You may reach 30 or 40 kilometers where no obstacle exists, but the range may be limited to 5 or 6 kilometers in cities where many high buildings disturb the communication.
MICROPHONE JACK The 7-pin DIN standard accessory jack has the following internai connections: 1. Microphone input (Z 600-10K ohm) 5. Audio output (Z 8 ohm-10K ohm) 2. Transmit/Receive switching. 6. +12V for VOX unit etc. 3. Internai microphone output (Z 1K ohm) 7. Ground return for 1-6. 4.
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CRYSTAL INSTALLATION Remove the unit from its mount, disconnect the power lead and antenna cable at the rear of the unit. 2. Remove four screws of the side of the bottom-cabinet. (Speaker mounted side). Carefully disassembled the cabinet. Remove speaker leads form the P . C. board. The crystal socket are marked as 1.2.
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PRINTED CIRCUIT BOARD PARTS LAYOUT (SOLDERED SIDE) ■4; A«8 H lh [P ® * «0/ sp\ya 5/555 O ? '...
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PARTS LIST for TS-727G PARTS N0. DESIGNATION PARTS NAME 502033 MP 22 Chassis Frame 474035-2 Chassis Frame Front MP 2 473008 MP 3 Cabinet Cover (Upper) 473009 MP 4 Cabinet Cover (Lower) Mounting Bracket for Speaker 474038 MP 5 474037...
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PARTS LIST for T S -72 7G PARTS NO, DESIGNATION PARTS NAME Zener Diode WZ - 090 D14,15 Silicon Diode 1S1555 D l~ 8 Silicon Diode 1S 2473 Silicon Diode D ll, 12, 13 1N4002 Germamium Diode D6, 16 1N60 Trimmer ECV-1ZW50P ' TS-727GE...
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SPECIFICATION for T S -7 2 7 G (T S -7 3 7 ) Semiconductors 2 IC ,12 transistor, 15 diode. Triple stage, crystal controlled, Transm itter System Coiiector modulation AM. 6 channels on 27 MHz. Frequency Within 0.005% ( - 1 0 С to 5 0 t ) . Frequency Tolérance 0.5watts (3 watts).
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