HFU HF Underground

Loggings => Spy Numbers => Topic started by: swl22 on January 30, 2022, 1709 UTC

Title: Cuban spy numbers
Post by: swl22 on January 30, 2022, 1709 UTC
Very active today on 11435 and 11530 at 1645-1710, with some noises in between strings. Probably a digital type marker,
Title: Re: Cuban spy numbers
Post by: MDK2 on January 30, 2022, 2053 UTC
The "noise" is a digital mode called DIGTRX. It's sending files in encrypted text.
Title: Re: Cuban spy numbers
Post by: ~SIGINT~ on January 30, 2022, 2130 UTC
Fabulous software actually. Too bad it is no longer maintained. The mode is robust.
Title: Re: Cuban spy numbers
Post by: fpeconsultant on February 01, 2022, 0156 UTC
Yes, and the have been in repeat mode since mid September 2021.
Title: Re: Cuban spy numbers
Post by: ~SIGINT~ on February 01, 2022, 0311 UTC
Repeat of the messages is common. Here are some that I have on file.

11211313   36257164
13804840   36601710
14623573   43453003
17550144   50026853
22374208   50087020
27864605   61336168
32055426   67284267
32533356   67546341
35664465   74676112
Title: Re: Cuban spy numbers
Post by: Token on February 01, 2022, 1434 UTC
Quote from: MDK2 on January 30, 2022, 2053 UTC
The "noise" is a digital mode called DIGTRX. It's sending files in encrypted text.

Small nit here.

The mode is called RDFT (Redundant Digital File Transfer), the most common software used by hobbyist to demodulate that mode is DIGTRX.  The RDFT mode was developed as a ham radio mode around 2001, and started being used by HM01 in about 2012.  Prior to HM01, the Cubans used the same RDFT (and a couple other modes, also) with HM01's predecessor signal, SK01, starting in about 2007.

There have been a couple of different beta and experimental softwares that could work with RDFT, but DIGTRX is by far the most common, and the only one that I know of that has a chance of running on a reasonably recent OS.

T!
Title: Re: Cuban spy numbers
Post by: fpeconsultant on February 01, 2022, 1659 UTC
New groups today after being in repeat mode since 9/23/21.
Is something pending or just RHC being RHC?
Title: Re: Cuban spy numbers
Post by: ~SIGINT~ on February 02, 2022, 0239 UTC
Cuba has been a long ally of Russia and it has long been suggested that the stations are also used by Russia. Some appeared in wake of the Cuban Missile Crisis. Speculate all you want.
Title: Re: Cuban spy numbers
Post by: MDK2 on February 02, 2022, 2133 UTC
Quote from: Token on February 01, 2022, 1434 UTC
Quote from: MDK2 on January 30, 2022, 2053 UTC
The "noise" is a digital mode called DIGTRX. It's sending files in encrypted text.

Small nit here.

The mode is called RDFT (Redundant Digital File Transfer), the most common software used by hobbyist to demodulate that mode is DIGTRX.  The RDFT mode was developed as a ham radio mode around 2001, and started being used by HM01 in about 2012.  Prior to HM01, the Cubans used the same RDFT (and a couple other modes, also) with HM01's predecessor signal, SK01, starting in about 2007.

There have been a couple of different beta and experimental softwares that could work with RDFT, but DIGTRX is by far the most common, and the only one that I know of that has a chance of running on a reasonably recent OS.

T!

I always welcome picking of my nits. Thanks Token.
Title: Re: Cuban spy numbers
Post by: MDK2 on February 02, 2022, 2135 UTC
Quote from: fpeconsultant on February 01, 2022, 1659 UTC
New groups today after being in repeat mode since 9/23/21.
Is something pending or just RHC being RHC?

You never really know with HM01. Either they do what they do in order to waste the time of government monitors, or it's the most inept numbers station in the history of numbers stations.
Title: Re: Cuban spy numbers
Post by: MDK2 on February 02, 2022, 2137 UTC
Quote from: ~SIGINT~ on February 02, 2022, 0239 UTC
Cuba has been a long ally of Russia and it has long been suggested that the stations are also used by Russia. Some appeared in wake of the Cuban Missile Crisis. Speculate all you want.

From what I can tell, the Russians have enough of their own systems not to need anything of the Cubans and their unreliable station. Even the Spanish Lady station (V07) seems to cover Latin America well enough. But it's all speculation as you say.