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Author Topic: What are these transmissions on 90 Meters (Kiwi SDR)  (Read 1689 times)

Offline ko4fki

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What are these transmissions on 90 Meters (Kiwi SDR)
« on: March 12, 2022, 1957 UTC »
This might be the wrong board to post this on but, I can't figure out what these solid red lines are on the 90 meters broadcast except for a weather transmission (3410). Can anybody explain this for me?

Image:
https://imgur.com/a/vqwvS2N
« Last Edit: March 12, 2022, 1959 UTC by ko4fki »
See you on HF...

73,
KO4FKI

Offline Charlie_Dont_Surf

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Re: What are these transmissions on 90 Meters (Kiwi SDR)
« Reply #1 on: March 12, 2022, 2104 UTC »
Data transmissions. Likely what is known as STANAG but it might be another format altogether.
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Offline ~SIGINT~

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Re: What are these transmissions on 90 Meters (Kiwi SDR)
« Reply #2 on: March 13, 2022, 0013 UTC »
Hard to tell from the screen shot due to the wide span of the spectrum and all of the clutter. Anything below 3.5 MHz (3500.0) should be tuned in Upper Side Band (USB) and not lower side band (LSB). LSB is only used in the Amateur radio band, 3.5 to 4.0 MHz.

Offline Josh

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Re: What are these transmissions on 90 Meters (Kiwi SDR)
« Reply #3 on: March 16, 2022, 0005 UTC »
Hard to tell sans audio, but mebbe MARS traffic in that area, 110A and some HAM modes like MT63.
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