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LBI-31998A - GE-MARC V TRUNKED MOBILE RADIO 100 …
https://www.repeater-builder.com/ge/lbi-library/lbi-31998a.pdf
audio is amplified by the receiver audio power amplifier cir-cuit. The audio output of the PA is then connected to the speaker leads at J904-18 and 19. Busy Tone Decoder Board 19D430562G1 & G2 Audio applied to the Busy Tone Decoder Board on the VOL/SQ HI lead is passed through a voice rejection filter com-posed of AR2-A, -B, -C. The resultant signal is limited by Q1
LBI-38853A - EDACS MASTR II STATION
https://www.repeater-builder.com/ge/lbi-library/lbi-38853a.pdf
TRANSMITTER The station transmitter consists of an exciter board as- sembly and a power amplifier assembly. The transmitter is a crystal-controlled, phase modulated design for single fre- quency operation. Refer to the transmitter maintenance man- ual for a complete description. SYSTEM BOARD A901
GE Ham News - worldradiohistory.com
https://worldradiohistory.com/Archive-Company-Publications/GE-Ham-News/GE-Ham-News-1952-Vol-07-No-2.pdf
the r.f. signal itself, so that if you hear an audio tone, you know that the transmitter is actually on the air. For 'phone monitoring, switch S is closed, which stops the oscillation between grid 1 and 2. Now, the germanium diode, G, acts as a detector to remove the audio intelligence from a 'phone signal, and the 6BN6 acts as an audio amplifier. CONSTRUCTIONAL DETAILS
Interfacing the S-COM 5K/7K Repeater Controller to a GE ...
http://scomcontrollers.com/downloads/7kgem2bs.pdf
SCOM Function GE Function SCOM 7K Pin SCOM 5K Pin MASTR II Backplane Transmitter #1 Audio High Trans Audio Hi J2-14 11 J1205B-14 Transmitter #1 Audio Low Trans Audio Lo J2-20 24 J1205B-13 Transmitter #1 PTT Local PTT J2-10 10 J1205A-14 Receiver #1 Audio High Vol / Sq Hi J2-1 13 J1206B-11 Receiver #1 Audio Low Vol / Sq Low J2-21 25 J1206B-12
LBI-31926 LBI-31926
http://www.ohioaprs.net/files/doug/GE%20MVS/31926c.pdf
2. Key the transmitter and verify that the deviation is <4.5 kHz. Test all channels. Transmitter Distortion 1. Inject an audio tone of 1 kHz at MIC HI J725-4. The tone should have enough amplitude to produce 2 ±0.2 kHz deviation when the transmitter is keyed. 2. Deemphasize the transmitted signal, and measure distortion. Distortion should be less than 3%. 3.
Smooth Tone Clickless CW Sidetone Generator - SolOrb
http://www.solorb.com/elect/hamcirc/sidetone/
It may be used as a code practice oscillator, a tone generator for a keyer, a sidetone oscillator for a CW transmitter or an audio Modulated CW (MCW) generator for an FM transmitter or repeater. Feng shuei is the Chinese art of arranging objects in buildings, it is based on many practical ideas.
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