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Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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2nd Sep 2021, 2:08 pm | #1 |
Heptode
Join Date: Jul 2020
Location: Larkhall, South Lanarkshire, Scotland.
Posts: 671
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Ubitx audio feedback problem.
Recently built an ubitx transceiver version four. The problem with this version is low RX audio. So i added an audio amp and now i have plenty of volume. Problem is i'm getting audio feedback on TX. I read online about a guy who cured it by putting a 5 volt relay on the PTT line which cuts the speaker off during TX. I've tried this but the relay won't active on TX.
Anyone got any ideas on why this is ? Thanks in advance for any help. Cheers.
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2nd Sep 2021, 10:31 pm | #2 |
Heptode
Join Date: Jul 2020
Location: Larkhall, South Lanarkshire, Scotland.
Posts: 671
|
Re: Ubitx audio feedback problem.
Well after doing a bit of research it seems i need to use a ''low level relay'' But not sure how to wire it
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