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Results tagged with signal-identification
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user 8016
Questions about identifying signals of unknown mode or origin.
6
votes
Accepted
Help on identifying signal type and extract audio from a signal
It's narrow FM with a "voice scrambler". Before getting passed to the FM modulator the voice signal has its frequency components "inverted", in this case by being subtracted from a frequency of about …
- 13.2k
5
votes
Accepted
Unidentified signals on FT8 frequencies
The fact that they align properly to the FT8 15-second period, and have 8 tones (the same as FT8) is a sign that these may be distorted FT8 signals, caused by AF harmonics in the transmitter or the re …
- 13.2k
6
votes
Accepted
What is this weird interference/strange radio station?
Oceanographic radar, aka CODAR. It's used to measure ocean currents, wave heights and frequencies by the way the waves reflect RF.
- 13.2k