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Author Topic: UNID 6942.5-6945 Digital 2013-Jan 11, 0119  (Read 855 times)

Offline Cornelius

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UNID 6942.5-6945 Digital 2013-Jan 11, 0119
« 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
« Last Edit: January 11, 2013, 0129 UTC by Cornelius »
SDRPlay, Tecsuns, PA0RDT, dipole, discone, etc.

Offline ChrisSmolinski

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Re: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
« Reply #1 on: January 11, 2013, 1302 UTC »
Link-11
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline rooftopper

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Re: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
« Reply #2 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.

Offline R4002

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Re: UNID 6942.5-6945 Digital 2013-Jan 11, 0119
« Reply #3 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. 
U.S. East Coast, various HF/VHF/UHF radios/scanners/receivers