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Audio drop off when amp is turned on

dx31353

Active Member
Mar 5, 2014
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My buddy was showing me his set up last night and I noticed that the meter falls to zero and the audio on the radio drops off for a bit when he turned his amp on. Just a few seconds. Is this normal?

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He might have a keying relay/transistor issue or problem with the pre-amp. What kind of amplifier is it?
 
My buddy was showing me his set up last night and I noticed that the meter falls to zero and the audio on the radio drops off for a bit when he turned his amp on. Just a few seconds. Is this normal?
He turned it on while modulating? What meter?
 
Have you checked the swr with the amp in place?

If I recall correctly adding an amp can affect it.

Perhaps the drop in performance is the unit being being hit by a high swr?

He says swr is around 1.2 across the band with .2 power reflected.

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sounds like the delay is to long on the rf switching or he was using the ssb delay for Am. And Yes that is common

He said it was common. I was curious though. If the delay is to long is it a problem that should be fixed or just let it go?

**Sorry about the multi post. I have not figured out how to multi quote on my phone.

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Not sure what amplifier this is yet since you have not told us. I think vkrules hit it, if this amp has an auto SSB delay that is too long there will be a half second or so delay before a receive signal comes in. On AM this can be a pain because you can miss the first word someone says. Also if it is a Palomar they can be cranky when too short of a jumper is used. They either won't un-key or there is a long delay before they do.
 
My buddy was showing me his set up last night and I noticed that the meter falls to zero and the audio on the radio drops off for a bit when he turned his amp on. Just a few seconds. Is this normal?

Sent from my SCH-I545 using Tapatalk



Doesn't sound normal to me but from the lack of info given no one can give a definitive answer.
 
Not sure what amplifier this is yet since you have not told us. I think vkrules hit it, if this amp has an auto SSB delay that is too long there will be a half second or so delay before a receive signal comes in. On AM this can be a pain because you can miss the first word someone says. Also if it is a Palomar they can be cranky when too short of a jumper is used. They either won't un-key or there is a long delay before they do.

Sorry, it's a fatboy 1x4 HD.

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We opened the amp up yesterday and it looked like the relay was hanging up. Took it over to a local guy and he fixed it up.

Thanks for trying to help. I'm new and I guess I don't explain things to good.

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