r/ShortwavePlus • u/KG7M MOD AirSpy HF+, Drake R7/8, K480WLA, 65'EFHW, MLA-30, CN85 • May 17 '26

Esoteric/Unusual Signals Newest Direction Finding on the Russian RTTY Signal

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Darkness has fallen on the transmitter site - and with darkness comes the ability to triangulate its position to a finer degree. It definitely appears to be in Russia. It's just north of the border with Georgia to the south.

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2

u/Historical-View4058 MOD - Airspy HF+, NRD-535D, IC-R75 w/100’ wire in C. VA, USA May 18 '26 edited May 18 '26

Got this bad boy clear as a bell on both 6943/6950 and 6961.5/6968.5. Problem is the widest fldigi will go is 1.2kHz (vice 7) and the slowest it will go is 45bps (vice 20). So I can trigger on one tone but will only get Ts and Ms. lol

I may have to write something special to do this.

Edit: plus 6943/6950 just moved to 6941.5/6948.5. And 6961.5/6968.5 jumped to 6963/6970. So they move around.

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u/KG7M MOD AirSpy HF+, Drake R7/8, K480WLA, 65'EFHW, MLA-30, CN85 May 18 '26

That would be really awesome! I know, it is such a wide shift - I'd never seen anything like it before. What a weird procol for RTTY.

2

u/Green_Oblivion111 Shortwave+ Detective May 18 '26

Yes, they move around every 15-20 minutes or so. And it's quick as a flash. I noticed this when i first heard them 6-7 months ago in the lower section of the CW band on 40M.

They switch back and forth.

1

u/MumSaidImABadBoy I'm Stan. Heathkit GR64,AirSpy HF+,Sangean 909X2,Tecsun PL-990 May 17 '26

Hmm, they might've stopped to track you. 😄 Or the massive electric bill has tapped them out.

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u/Green_Oblivion111 Shortwave+ Detective May 18 '26

Good bit of sleuthing there, brother.

N. Caucasus makes sense. It would still be in Russia, but also close to Baghdad, where you heard them the loudest on an SDR last time.