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Query: a 3r amplifier

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1.0/5 (3)

Technical Reference > Audio

Audio processor for SSB transceiver

This circuit consists of microphone amplifier and a high pass filter. Suitable to improve signal readability.
2.5/5 (2)

Radio Equipment > HF Amplifiers > Ameritron AL-811

Ameritron AL-811 Panel Meter Lights — VE3RX

A solutiom for the Ameritron AL-811(H) RF power amplifier, burnt panel meter lights. A common failure with the Ameritron AL-811 and similar amplifiers is that the panel meter lights burn out prematurely. These bulbs are usually integrated into the actual panel meter. The solution for this is to provide the meter backlighting with LEDs.