Sommerkamp TS- 5612, Инструкция по эксплуатации

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GENERAL:
Your SOMMERKAMP TS-5612 transceiver has been designed for continous heavy
duty portable application. The transceiver is designed to operate with internal dry
cells or rechargeable nickel-cadmium batteries such as N500AA set w ith the
12360 charger.
To prevent excesive battery drain, this transceiver has a stand-by switch in
combination with the operate and call switch, which by a timing circuit and a
switching transistor switches the receiver on for 2 seconds and o ff for 10
seconds. This device extends the battery life 6 times longer compared with
continous squelched stand-by operation. It is necessary. however, for a calling
station to call by minimum 10-15 seconds before receiption and contact
is
possible.
RECEIVER SECTION.
The receiver section is designed to receive amplitude moduiated (AM/A3) signais
in the 26.965 to 27.275MHz. (11 meter) citizens band. The unique combination
of low noise Field Effect Transistors (FET), single conversion, a combination of
mechanical ceramic, and L/C filters, fully automatic noise limiter and a hifi
quality speaker amplifier w ill give you exceptional réception quality in this fine
piece of equipment.
In addition, the above combination of the latest technology provides you with a
sensitivity and unwanted signal rejection and noise suppression available previously
only in space and military communication equipment.
The power supply of the receiver section is stabilized by an extreme sharp cut-
o ff Zener diode controlled sériés stabilizer to obtain the high sensitivity and
unwanted signal rejection. The fully automatic sériés gâte noise limiter, which
virtually cuts o ff the audio output during ignition noise puises, is defeatable to
make even the weakest signal audible which otherwise would be eut off by the
threshold level of the ANL switching diode.
The high squelch sensitivity is achieved by using a seperate squelch detector and
switching circuit with a carefully balanced hystérésis. The transformerless hifi
quality audio power amplifier will drive any load between 32 ohms and indefininite
such as internai speaker/microphone combination or external speaker/microphone
or headset combinations having the above impédances.
The meter indicates the field strength during réception of a signal, and without
signal the battery condition.
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