24 March 2018

STANAG-4285 unid 1536-bit secondary protocol (UK MoD?)

In most cases, STANAG-4285 transmissions running at 1200bps/L or 2400bps/L carry a data protocol with a period of 1536 bits, most likely a multiplex system (TDM) capable of carrying data and sync channels.

I followed these STANAG-4285 transmissions on 14548.2/usb throughout the morning and the first part of the afternoon. Unlike similar S-4285 broadcasts, there is not a continuous broadcast and the messages are transmitted to the need and always using the 1200bps Long interleaver sub-mode.
TDoA multilateration using 5 KiwiSDRs as sensors points to Cyprus Island as Tx site: maybe UK MoD DHFCS?

No comments:

Post a Comment