My first guess is a noisy local oscillator. Phase noise in the LO PLL
system. Since it happens on all bands I would look at parts of the LO
system that common to all bands. The 5 to 5.5 MHz VFO maybe.
On Wed, Jul 4, 2018, 09:53 Bob Good <k4bg@planters.net> wrote:
> I recently developed a weird malfunction in the Omni VI Op-3. I hear
> strong CW signals on all bands presented as raspy “white” noise listening
> anywhere on the band. I can copy their sending and can locate the the
> source signal frequency. It is as if they were terribly overdriving their
> signal creating band wide spurs. I hear the same on LSB and USB. In my 25
> years with Omni’s, I’ve never experienced this. I have the covers off
> ready to dig in with the deoxit but that’s a lot of connectors. If any one
> recognizes this problem, please guide me to the likely problem area before
> I go further. This old old old timer thanks you. QRZ info is current.
> Regards, Bob K4BG, Sylvania, GA
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