Hi all, lately I've been having some interference come up when trying to join in on the Stir-Crazy nets when I am portable during the week.
Around the HCU campus between 12:00 and 13:50, I notice the same four narrow peaks of S9 splattering noise - not quite harmonics of 60Hz but not just static either. It reminds me of what DMR sounds like on an FM receiver. They are strongest on 146.915, 146.935, 146.955, and 146.995MHz. 146.94MHz is noisy but sometimes copyable. My rudimentary understanding of RF harmonics led me to check 440.86, but nothing was heard there. Any advice for someone who just has an HF radio and dual-band HT to investigate more? I take the antenna off my IC-W32 and it all goes away (including receiving 146.94 too), so DF’ing that way (unless I find the fundamental) is out of the question. A thought was to have a classmate use an RTL-SDR to scan outside amateur bands to see if there are harmonics elsewhere, but I have yet to do that. [A person in a suit smiling Description automatically generated] Blake Alley | BAA Electronics QRZ: N5BAA Mobile: (281) 450-5785 n5...@baaelectronics.com<mailto:n5...@baaelectronics.com> [A blue circle with white letters on it Description automatically generated]<https://www.linkedin.com/in/baaelectronics/> [A red and white play button Description automatically generated] <https://www.youtube.com/@baaelectronics> [A blue circle with a white v in the middle Description automatically generated] <https://vimeo.com/baaelectronics> [A logo of a camera Description automatically generated] <https://www.instagram.com/baaelectronicsyt/>
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