data recordings

[brandon]

Picked up some interesting data transmissions on several satcom freqs over the past week.

261.725 - Bleeping sound (Audio)
262.075 - Sound like some type of digital transmission. (Audio)
262.125 - Ringing sound (Audio)
262.175 - Open carriers and screeches (Audio)
262.175 - Bleeping sound and data bursts mixed in (Audio)
262.175 - High speed data? (Audio)
266.950 - Long data transmission starts about 10 seconds into the recording (Audio)

I'm not very familiar with data transmissions so input is always welcome

 

[CalebATC]

The second one really sounds like a Motorola IMBE (ASTRO APCO-P25 Trunked) Digital Voice channel. Here is a sample of one, which really sounds like it http://kb9ukd.com/digital/astro-imbe.wav . We have one of those by my house used for Fort Benning, unfortunately, I don't have a digital scanner.

Let me know what you think, it is not perfect in the recording, but that is my guess.