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amlplifier

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    400HD Mobile Amplifier Issue. Requesting experienced amplifier person to reply.

    Basic built 4x2SC2879 transistor mobile amp. Started having an issue with the amplifier. My SWR is normally 1.0 on channel 20, as well as 1 through 40, with just the radio on. With the amp on it raises to 1.4. My antenna and power setups are fine. I noticed recently if I keep the mic keyed up...