HFU HF Underground

Loggings => HF Mystery Signals => Topic started by: Bill F on August 25, 2016, 2315 UTC

Title: 6,946.5, 08252016, 2305-present, (s9+30in AM mode)
Post by: Bill F on August 25, 2016, 2315 UTC

I'm not sure what mode this is.  I guess its some data mode.  It appears to be very wide from about 6945.388 to about 6,948.438 khz.
When I widen the waterfall on the SDRPlay it appears to have 9 separate streams I'm guessing of data.
QTH-Hatboro, PA

Title: Re: 6,946.5, 08252016, 2305-present, (s9+30in AM mode)
Post by: JCMaxwell on August 26, 2016, 0044 UTC

Bill, search the forum for stanag.  Been reported a lot in this are in the last year or so.  Token has made several response posts on this.

Cheers,
JC

Title: Re: 6,946.5, 08252016, 2305-present, (s9+30in AM mode)
Post by: Bill F on August 26, 2016, 0116 UTC

thanks JC

Title: Re: 6,946.5, 08252016, 2305-present, (s9+30in AM mode)
Post by: Token on August 27, 2016, 0331 UTC

What you have there now (and for the last 24+ hours) is a broken signal.  What has been there is STANAG 4481 FSK, encrypted RTTY with 850 Hz shift.  For the past week all that has been present is the resting leg, one of the two tones, on 6947.425, looking like a dead carrier.

T!