Interesting recording of STANAG-4285 1200bps/L blocks which transport 8N1 framed streams (async ops).
 |
| Fig. 1 |
After demodulation (I preferred to use my Harris RF-5710A modem), each block consists of 476 bytes of data and share the same header (Fig. 2):
00 52 00 00 A4 3A 29 21 5C F0 01 4C 00 00 00 00 00 00 00 F2 40 19 77 E6 ...
don't know what the "signature" could be (encryption, compression, protocol encapsulation...), anyway the messages are not sent in clear-text.
 |
| Fig. 1 |
Recording picked up on 7559.0 KHz/USB using http://swloi33.proxy.kiwisdr.com:8073/
No comments:
Post a Comment