[ADXA] Video - RFI

[patw5vy at gmail.com]

Steve,
Is the scope display the recovered audio from your rig?  I see a scale
factor of 30ms/div but can't see the divisions.  Sounds like 60Hz plus
harmonics.  Does it have a time of day pattern?  Does the amplitude vary
when you spin your 6M yagi?  That might give you a clue where it's coming
from.   As Rory pointed out, it sounds like RFI generated by arcing on a
Medium Voltage distribution line....13.8kV.  Could be loose hardware,
damaged surge arrestor, cracked insulator, etc.  Just in case it's a battery
charger, wal-wart power supply, etc. in your house, you can try selectively
turning off breakers in your distribution panel to see if one of them kills
the noise.

Good luck!

73,
Pat, W5VY


Here's a link to examples of RFI:  http://www.radiojove.org/SUG/RFI/RFI.html
-----Original Message-----
From: adxa-bounces at mailman.qth.net <adxa-bounces at mailman.qth.net> On Behalf
Of Crownhaven
Sent: Tuesday, May 5, 2020 2:38 PM
To: ADXA at mailman.qth.net
Subject: [ADXA] Video - RFI

Guys, any thoughts?