UK GOV/MIL "WinDRM51" variant. Unknown purpose, But link between UK & Cyprus has been found some years ago.
I/Q Raw Recording
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Signal found 2016 January 3rd T18-58-46Z 9104.6kHz
IDENTIFIED It's the UK GOV/MIL "WinDRM51" variant, supposed idle only, seen on many freqs in the past, for unknown purpose yet. But link between UK & Cyprus has been found some years ago. Credit: Linkz --Cartoonman (talk) 08:59, 18 January 2016 (NZDT)
It is a special case of OFDMOrthogonal Frequency-Division Multiplexing, using only one of every two symbols.