HFU HF Underground

Loggings => Utility => Topic started by: unit-e on March 04, 2022, 0320 UTC

Title: "Evolution" 4724khz USB 3/4/22 0230z
Post by: unit-e on March 04, 2022, 0320 UTC

Robotic Male Voice, American English Accent

"This is Evolution, more to follow standby
ANRGYQ Standby
ANRGYQ Standby
ANRGYQ Standby
Message Follows
ANRGY6MJ4CQF4B3BYANC7R6ABDWQ...
This is Evolution out"

I couldn't find it listed in the database.

Title: Re: "Evolution" 4724khz USB 3/4/22 0230z
Post by: tiNG on March 04, 2022, 0932 UTC

Hi.

Not a numbers-station but the US-HFGCS.

@Admin / Moderators: Please move this topic. :-)

Title: Re: "Evolution" 4724khz USB 3/4/22 0230z
Post by: Token on March 04, 2022, 1503 UTC

unit-e,

As @tING said, this station is not generally considered a numbers station.  Yes, it is a coded message, and yes, it does contain numbers, but military traffic is not, generally, considered a "numbers" station.  There are exceptions, of course, but this is not one of them.

This station / schedule / transmission is not in the database because it is not a numbers station ;)

This is a coded message, assumed by hobbyist to be called either an FDM (Force Direction Message) or an EAM (Emergency Action Message), transmitted as part of the US military HF-GCS (High Frequency Global Communications System) network.  These messages have no specific schedule of transmission, although repeats often occur at 30 minute intervals.

This voice is live, not robotic.  The voice may be male or female, and often changes during a shift.  The voices heard for these messages are most typically US Air Force personnel, and typically enlisted ranks.  The callsign, in this case "Evolution", changes daily at 0000 UTC.  The callsign is generally 2 or 3 syllables, and may be one word or two.  The callsign is randomly selected from a pre-approved list of callsigns and may be reused.  Re-use of a callsign is uncommon, and it may be years between uses of the same callsign.

These messages are simulcast on 4724 // 8992 // 11175 // 15016 kHz.  All 4 frequencies are generally transmitted at the same time, and it is done from up to 13 different transmitter locations around the world.

You will also hear other traffic on this network, some of them will have fixed callsigns, and some will have the 24 hour rotating callsigns.

T!

Title: Re: "Evolution" 4724khz USB 3/4/22 0230z
Post by: unit-e on March 05, 2022, 0131 UTC

Thank you both. I see @sigint opened a new topic on this under utilities. The message structure is identical to his logging of EAS/FDM.

First time I've caught one in my 7 years of swl/ham so I wasn't sure what I was hearing.