I have some general RFI location tips at my web site, www.nk7z.net...
Whatever it is, I bet it has a motor in it... You didn't by chance
get a new HVAC did you?
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 1/1/21 5:30 PM, Brad Denison wrote:
Well, 2020/2021 transition is starting off poor with some new RFI killing
my SE directional RX antennas. From this direction I am hearing a broad
hash with a "musical whine" . It seems to be a fairly consistent on/off
cycle, however, I have noticed the cycle duration change depending on the
day.
Would appreciate any insight if anyone has experienced anything similar.
To date I have done a full house power down test and also walked the area
with a small AM handheld (which does not hear anything locally).
A picture of the RFI is here: http://bit.ly/3hwzwUg
Short cycle audio here: http://bit.ly/34ZtbeS
And longer cycle audio here: http://bit.ly/3hE3TYP
Hoping to stir up some help or suggestions.
HNY,
Brad W1NT
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