[aprssig] APRS: RFI from LED bulbs?
Joe Della Barba
joe at dellabarba.com
Mon Oct 22 21:08:31 EDT 2018
I have many LED bulbs on my boat. Most are fine, but one wipes out
everything well into the VHF spectrum. The USCG has been all over this,
it makes AIS targets vanish.
73 de N3HGB
On 10/22/2018 9:23 AM, Robert Bruninga wrote:
> I am hearing reports of RFI from these LED bulbs. Not just HF, but also
> If you can make any quantitative assessments of such RFI, please let me
> And the amazing thing is that at VHF you will never notice it because RFI
> is noise power and it is noise power that keeps a squelch CLOSED.
> Manuallly open the squelch and sometimes RFI will show full scale on the S
> meter yet not open the squelch. And on my radios, when the squelch is
> closed, the S meter is inactive and shows 0.
> Bob Bruninga, WB4APR
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