17 June 2021

a STANAG-4481F temporary channel activation?

Heard 75Bd/850 FSK transmissions (broadcasts?) on 6372.0 KHz CF until sunday 13th June, no transmission in the following days (at least until today). Transmissions were KW-46 secured and sourced most likely from Barford St.John USAF transmitter. Think of a temporary activation on the occasion of the G7 summit just in UK... is that too imaginative?

Fig. 1

Fig. 2
https://disk.yandex.com/d/e1BfYmNeUhHa1A

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