Russian 29B6 Container radar in ham 15 meter band, 21311 kHz, 04 November, 2024, 1500 UTC

[@m1geo]

To be about 35dB above the noise floor and 15 kHz wide over that distance, it's running some serious power :)

[@stevexray6253]

It sounded good when you switched to FM mode at about 2:45. 😁👍

[@antoineroquentin2297]

Can we transmit a recording of the signal on the same freuency to shoo them away (make it unsuable for them)?

[@FirstToken]

Ala the old "Woodpecker Hunting Club" technique. Sure, you could probably do that, but it would require a more complex transmission than the old "send Morse dits back to them". One advantage of the FMOP waveform is that it handles interference a bit better than the old BPSK modulated pulses of the Woodpecker. In order to be really effective you need to cover a large part of the occupied bandwidth.

[@AndrejaKostic]

Which software is use here at the start of the video? I've been looking for SDR software that can receive wide SSB for a while, but couldn't find something as nice looking as shown here.

[@FirstToken]

The SDR control software shown in the first 1:05 of the video is SpectraVue, it will go to 24 kHz wide in SSB mode. This is the basic software that is / was shipped with the RFSpace SDRs, and I think it can still be downloaded from their site. However, it works with a limited number of SDRs.

[@AndrejaKostic]

@@FirstToken Thanks a lot!

[@leaveempty5320]

metre

[@FirstToken]

@leaveempty5320 said "metre". True, as an uncultured colonial, I did use the more US English based spelling. However, I suppose I could have just done it in "put a man on the Moon" units and converted it to feet. That just seemed a bit over the top ;) And for those about to get butt-hurt reading my response .... it was a joke, much as I assume the posting of "metre" was intended. Toss leaveempty5320 a thumbs up for that comment.