[RFI] Mystery noise

[Jeff (W4DD)]

Sounds like my Carrier A/C outdoor unit.  Small spike every 19khz.

On Wed, Aug 11, 2021, 11:04 AM Pete Smith N4ZR <pete.n4zr at gmail.com> wrote:

> I don't know if the reflector will allow this image, but thought it was
> worth a try.
>
>    This thing shows up periodically - happily not often.  The
> periodicity makes me think switching power supply, but aren't they
> normally discrete , sometimes noisy, sometimes drifty but fairly narrow
> critters? This has a substantial 120-Hz component, but why every 19 KHz?
>
> --
> 73, Pete N4ZR
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