ARRL

Register Account

Login Help

Forum Home - Rules - Help - Login - Forgot Password
Members can access, post and reply to the forums below. Before you do, please first read the RULES.

sunset to sunrise RFI on 80 40 and 30M

Nov 19th 2020, 09:09

AB8O

Joined: Dec 14th 2005, 10:13
Total Topics: 0
Total Posts: 0
I have RFI on 80, 40 and 30M each night from sunset to sunrise every day. Can I send a video of my IC-7300 panadapter as evidence?

It's ONLY from sunset to sunrise.

I’ll try to describe it…the signal is every 100 Hz, the frequency varies in what appears to be a sin fx or sawtooth over about 50 Hz…it’s periodicity is 2 Hz. So, on the waterfall, there are multiple zigzag patterns that repeat every 100 Hz. It begins to diminish a bit above 8 8 KHz and below 6.7 KHz. It’s still there on 80M and 30M but much less intense.
Any help appreciated.
73. John AB8O
Nov 19th 2020, 12:05

W1VT

Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
These days the only practical way to identify most RFI sources is to first locate it first. There are just too many electronic and electrical devices to put together a database of noises.

http://www.arrl.org/radio-frequency-interference-rfi

Zak Lau W1VT
ARRL Senior Lab Engineer

Back to Top

EXPLORE ARRL

Instragram     Facebook     Twitter     YouTube     LinkedIn