I am not sure if you have fully ruled out your own house yet or not. But this
may help...
I ran into something similar and initially thought it was because of my newly
installed power Smart meter. Then, I slowly turned off different circuits in
the house (while monitoring the noise floor on the HF bands), and found it was
somewhere in the house. Finally, it turned out it was a switching power supply
for my cable TV modem. Replaced that with a brick, and all is good.
Good luck,
Andreas, KU7T
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of David
Thompson
Sent: Tuesday, November 13, 2012 12:36 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] RFI Issues for W7PSK
I have had a number of RFI instances and less than 50% are power line related.
So the question of what if they (the power company) find the problem is in a
house or business is very possible.
Here is what I have found:
1. Door bell buzzers.
2. Bad switches in my power panel.
3. Defective motors in fish tanks.
4. A bad UPS at a software company
1/2 mile away.
5. A defective motor on the AC at the same software company.
6. Defective electric fences.
7. TV sets that generate noise.
8. Touch on lights (160 and 80).
Another problem for underground utilities is bad grounds and lightening
strikes. The problem usually stops between 7 and 10 Mhz.
Power Companies have full work loads already and at best they will have a CB
sniffer.
Private homeowners and businesses do get FCC letters just as do the Public
Utilities. So its probably up to the ham to find the problem and ask for help.
The FCC is usually the second level of help.
Dave K4JRB
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