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Re: [RFI] What would cause noise like this?

To: rfi@contesting.com
Subject: Re: [RFI] What would cause noise like this?
From: Dave Cole <dave@nk7z.net>
Date: Sun, 3 Nov 2019 04:37:01 -0800
List-post: <mailto:rfi@contesting.com>
Check out the web page at:

https://www.nk7z.net/sdr-rfi-survey-p1/

for an automated way to sample your RFI environment... It uses a SDR to sample across time and wide bandwidths... Very handy for getting a "feel" for your RFI environment prior to a "boots on the ground" look.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 11/2/19 10:07 AM, Frank O'Donnell wrote:
Thanks for the suggestions on locating noise sources with direction-finding gear -- I will check those out.

My main interest in posting was to ask if this pattern was an obvious smoking gun for a particular type of noise source -- or whether, say, the fact that it started an hour before sunrise would necessarily rule out solar panels. Dave's comments about the schedule of RFI appearance are helpful, and I'll keep an eye on that.

To answer Jim's question, this view covers about 180 to 440 kHz.

Thanks again and 73,

Frank K6FOD


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