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.

Bad QRM from stovetop circuit

Jan 13th 2021, 00:16

WO4X

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
I have terrible QRM from my stove circuit, 5 S-units, repeating every several hundred Hz. aross 80m and 40m. It comes in through the antenna. When I disconnect the antenna, it goes away. When I run the radio from a battery with the antenna attached, it is still there. When I turn off the circuit breaker to the cooktop, it goes away.

I can't remember for certain, but I think it must have started when I installed a new Samsung cooktop with touch controls about 6 months ago.

This seems pretty impractical to install torroids unless somebody knows something I don't. What about the Timewave ANC-4 or MFJ 1026?

Has anybody solved this sort of problem?

73 Jim WO4X
Jan 13th 2021, 05:35

W1VT

Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
https://surgestop.com/ Morgan manufacturing sells line filters.

An RX loop with a sharp null could be oriented to improve reception.
A small loop may allow placement to best null the interference, something that isn't possible with a big loop.

A null canceller should help, but may require some experimentation and practice for adequate results. It typically requires some skill for best results.

Zak W1VT
ARRL Senior Lab Engineer

Back to Top

EXPLORE ARRL

Instragram     Facebook     Twitter     YouTube     LinkedIn