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Author Topic: DDH3 Germany 3855 / 3853.10 USB 2139 UTC 11 Oct 2023  (Read 660 times)

Offline TRI International

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DDH3 Germany 3855 / 3853.10 USB 2139 UTC 11 Oct 2023
« on: October 11, 2023, 2149 UTC »
2139 - 2149 UTC DDH3 started transmitting

S - 9 via Vevelstad, Norway Web SDR

« Last Edit: October 11, 2023, 2151 UTC by TRI International »
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Offline tiNG

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Re: DDH3 Germany 3855 / 3853.10 USB 2139 UTC 11 Oct 2023
« Reply #1 on: October 12, 2023, 1242 UTC »
Hi.

CF is 3855,0 kHz (FAX = FSK).

Be aware that all FSK (FAX, RTTY, SITOR-A/-B, DSC, NAVTEX etc.) signals have a center frequency ALWAYS in the middle between high and low "tone" (Frequency). You may receive it in USB (with speciall offset) or CW (with correct BFO tune). But as it is a frequency modulated signal the CF is always between "mark" and "space" (low and high "tone" or frequenc).

Hope this helps. :)
73 & 55
Thomas
Rüm hart – klaar kiming