Posted by Glenn [ sta_gje@att.net ] on January 12, 2026 at 22:54:07.

In Reply to: Re: 205 kHz Mystery? posted by John Davis on January 12, 2026 at 17:36:04.

My antenna for LF is a LARGE loop on ground. I do get blasted by AM stations and they will cause intermod products in the LF areas. I put a band reject filter on my LOG as its signal leads come into the shack. It does a pretty good job. Sometimes in the afternoon I will get one station that barely makes it through but I can turn on my notch filter in my SDR and it's all clear. Watching these two signals (205 Khz and its companion 165 Khz turning on and off at the same time makes me wonder a lot. These signals could have been generated outside of this country but who knows. Some kid down the street could have made them. 205 with sidebands and 165 with only a carrier going on an off at the same time. Strange to me. But it won't be the first or last time I see something strange. Keep you eye open and if you see something similar say something. Thanks for the response!

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