[PLUG] Buzzing speakers - SOLVED!
David
dafr+plug at dafr.us
Fri Mar 27 02:41:00 UTC 2020
On 3/25/20 8:43 PM, Michael Barnes wrote:
-- clip --
>
>
> Source of problem discovered. Still working on why. My APRS base station
> beacons every 30 minutes. For some reason, I recently started getting some
> RFI into things, this speaker being one of them. Just happened to be
> looking at the APRS screen when it transmitted and heard the buzz at the
> same time. Now to figure out and solve why the RFI is only recently
> getting into things.
I have limited little knowledge about APRS and my HT is analog so, along
with being green, I don't have much to offer here.
The questions that spring to mind are:
* has an antenna been added, removed, or relocated recently?
* has the power source for the speaker or base station changed?
* proper grounding on the base station?
* what happens if you hit TX on your base station for voice?
A ferrite choke may be all that is needed, but I'm not sure where it
would need to be positioned.
dafr
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