HFU HF Underground

Loggings => Utility => Topic started by: Cornelius on January 11, 2013, 0119 UTC

Title: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
Post by: Cornelius on January 11, 2013, 0119 UTC

I've never heard anything that sounds like this before. Does anybody care to speculate? Currently transmitting with a VERY strong signal.
https://dl.dropbox.com/u/32005683/strange%20digital%20mode.mp3 (https://dl.dropbox.com/u/32005683/strange%20digital%20mode.mp3)

Title: Re: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
Post by: ChrisSmolinski on January 11, 2013, 1302 UTC

Link-11

Title: Re: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
Post by: rooftopper on November 10, 2018, 0421 UTC

Hearing 2.5 second long tone bursts - mostly evenly spaced but not always - with some longer pauses - on 6942 USB 11-10-18 0400UTC.  SINPO 35343 into SE Wisconsin.  Beacon?  Just tuning around with a Sangean 909X and 66ft end fed swl antenna.

Title: Re: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
Post by: R4002 on November 14, 2018, 1307 UTC

Not a beacon, its the tell-tale sound of the Link-11 system (military datalink protocol) used on the HF and UHF bands.