On Tue, 2007-07-17 at 23:18 -0500, Mike, K9UW wrote:
> I'm enjoying a new (to me) Paragon 1, but have a question about a
> possible "issue" I've run into.
>
> With the 6 KHz filter selected, I notice a distinct whine in the
> receiver that is masked only by receiving a very strong signal. The
> whine is high pitched and rather annoying. While it can be heard in
> all modes, it is most apparent in AM.
>
> The whine can be temporarily reduced/eliminated by pressing and holding
> any button that does not impact frequency selection. Pushing and
> holding TX OFF, for instance, causes the whine to disappear. If I
> listen very closely while holding in one of these buttons, the high
> pitched whine has been replaced by a much quieter and lower pitched
> rapid pulsing sound.
>
Its probably board grounds, though I recall some Paragons needed a
control board properly soldered and there may have been a factory made
new board for just that whine problem. Dig into the archives, maybe all
the lists with google.
> The whine is also eliminated by selecting the 2.4 KHz filter, but that
> is not always a viable or attractive option when copying an AM station.
>
> Is this typical of the Paragon? A search of the archives produced only
> one reference to something similar and that was posted 9 years ago with
> no replies. If it is not typical, where might I look for a solution/cure?
>
> Thank you, in advance, for your replies.
>
> 73, de Mike, K9UW
> Amherst, WI
73, Jerry, K0CQ
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