Tuesday, October 16, 2018

STANAG 4285 signal on 442 kHz

A STANAG 4285 signal was detected on 472 kHz on the Kongsfjord KiwiSDR on 472 kHz:

First I thought it was a fake signal but it was also present on the SM2BYC KiwiSDR.

The bitstream obtained after convolutional decoding and deinterleaving consists of frames delimited by the LFSR sequence F1, using the notation of this blog post:

TDoA maps point to somewhere on the coast of Norway:

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