[RFI] Power Line Noise Specific to 15 meters

[EDWARDS, EDDIE J]

Mike, 

You're statement that it's not likely is correct most the time (99.9%), but there are rare occasions when the hardware configuration doesn't follow the expected weather changes.  

Had one case with a full metal cross arm where the RFI source did not go away when it rained.  These aren't used much if ever anymore by my utility as the sparking can also damage the wood pole. 

Another RFI case some years ago was in my neighborhood that started up when it rained which turned out to be a squirrel guard on top of a transformer.  Found it with a new UE Systems ultrasonic back then.  The guard had metal prongs sticking out in all directions 360 degrees.  It sounded like a Jacob's Ladder when the rain initially started, and finally was on 100% in heavier rains.  When rain stopped the noise stopped as it dried out.  My utility stopped using this style guard based on my complaint.  

73, de ed -K0iL

-----Original Message-----
From: RFI On Behalf Of Michael Carter

One more tip: if the RFI doesn't abate when it's raining, it is likely not an external power line arc source.  My local power line RFI goes away whenever we have a damp morning or a good steady rain.

73,
Mike, K8CN