Someday when it is very quiet, and indicative of your normal conditions
with no RFI, take a snapshot using S-Meter Lite, your P3 screen, and
Spectran... Keep it, guard it, and always refer to it if you have
That has come in very handy for verifying RFI sources for me... I just
look at the old version, compare it to the new version, and I have what
has changed... Sometimes RFI can creep up on you over time, and you
don't even know it. I take a baseline about every six months here.
Thanks and 73's,
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for MM-SSTV see:
On Fri, 2014-10-10 at 00:37 -0400, Gary Smith wrote:
> > : Makes sense power-wise but what about RFI issues with these? Any
> > : known or likely concerns?
> > Regarding the average street light you may find an many cities...
> > I've passed under tens of thousands, made by many companies. All have been
> > silent except when they malfunction as indicated by flickering or rapid
> > flashing, then they spew broadband hash from LF to UHF. At UHF I can hear
> > them a few hundred feet away, probably much worse on HF. Think about that
> > tall steel pole acting as a big antenna.
> > Kurt
> The Sodium one in front of my house is a terrible RFI source when it
> fails. I'm wondering about the LED replacements, Wondering if they
> are hash producers?
> I always see the familiar pattern on the P3 screen when there's a
> local sodium light going bad.
> Gary KA1J
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