Geloso - G 212-TR - Transmitter
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Equipment:
G 212-TR
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Information
The transmitter G 212-TR has been designed
to meet the requirements of amateur communications. Even
with the limited power
it supplies (60 watts imput to the final r.f.
amplifier), this transmitter permits secure
and stable communications even under very
adverse operating conditions.
Its main features are:
1) Outstanding simplicity and rapidity of
changing operating frequencies and bands.
2) Variable frequency oscillator « Clapp » of
high stability, and wide-band buffer and
doubler circuits.
3) Plate-tuning adjustment of the final r.f.
amplifier.
4) Pi-section antenna coupling circuit, providing a means
of matching different antenna impedances.
5) Rapid changing from « phone » to « c.w. »
operation, by means of a simple switching
arrangement.
6) Modulator equipped with two 807s in
push-pull, permitting undistorted 100%
modulation, checked by means of a built-
in measuring instrument. I t permits full
utilization of the available r.f. power.
7) Audio frequency response of the modulator particulary
adapted to voice transmission; this provides maximum
intelligibility even under most adverse operating conditions.
8)
Rapid changing from transmission to
reception by manipulating a simple
« Transmit-Receive » switch which simultaneously switches
the antenna connection as well as the plate supplies of
transmitter and receiver. Both equipments start functioning
instantaneously
because the filaments of the tubes are
kept warmed-up all the time.
9)
Possibility of « zero-beating» the transmitting frequency
to the opposite station’s
frequency during reception by merely
actuating a simple toggle switch which
starts the r.f. oscillator/exciter.
10)
Possibility of checking the plate voltage
and the grid current of the final r.f.
amplifier tube as well as the modulation
depth by means of a built-in measuring
instrument.
11)
Lay-out on a single chassis, enclosed in
a sturdy metal cabinet of handsome and
modern lines with gray hammertone finish to match the G
209-R receiver.
1 Manual
Service and user manual
Manual type:
Service and user manual
Pages:
23
Size:
3.1 MB
Language:
english, italian
Revision:
Manual-ID:
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
April 23, 2017
MD5:
3c229fc0-fb87-4da4-4f31-cb8d628925a1
Downloads:
448