Sommerkamp TS-712P, Инструкция по эксплуатации

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TRANSMITTER & MODULATOR SECTION:
The transm itter section is designed for continous heavy duty transmission of
amplitude modulated (AM/A3) signais in the 27 MHz. (11 meter) citizens band.
The transm itter consists of an crystal controlled oscillator. The output of this
osciilator is ampiified in a highly e fficie n t collector-modulated dass C driver
and power output stage, coupied by séries and pi-matching filte rs to the antenna
jack.
The modulator consists of an input audio filte r, ALC transistor, integrated pre-
and power am plifier and modulation transformer. This gives you the lowest
possible modulation distortion and up to 100% modulation. The input is designed
for 500 to 10K ohm dynamie microphone or 8 ohm speaker/microphone combina­
tion w ith a 1K ohm resistor in sériés.
RECEIVE/TRANSMIT SWITCHING:
The receive/transm it switching is do ne by a single pole, single throw switch in
the microphone and a combination of NPN and PNP switching transistors.
METER:
The combination meter provides you with the following functions.
During receive mode.......... it indicates the incoming signal strength.
During transm it mode.......it indicates the output power.
AC POWERSUPPLY
The AC powersupply consists of the heavy duty power transform era 4 diode füll
wave bridge re ctifie rs and a heavy duty voltage stabiliser for 13.5 Volt for the
receiver and transm itter sections.
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