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Author Topic: USAF HFGCS message at 20 MHz?  (Read 607 times)

Offline MDK2

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USAF HFGCS message at 20 MHz?
« on: March 27, 2024, 2139 UTC »
I'm posting this separately from the main log diary since I've never seen this before. I found an apparent EAM on WWV's frequency of 20 MHz (20000 kHz USB) just today at 2124 UTC.

https://youtu.be/Ql7RNK5T29A
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Offline ~SIGINT~

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Re: USAF HFGCS Message 20 MHz USB 2124 UTC 27 MAR 2024?
« Reply #1 on: March 28, 2024, 0204 UTC »
I am not sure what that transmission was all about but do not believe it to be an authentic HFGCS message.

Going through several passes of audio restoration I was able to recover the majority of the message.

AB0F1I// C6GSF 2QGLI 1UV6G 2ZD?F HYDMZ 2?01I
THIS COMPLETES MESSAGE OF 36 CHARACTERS
THIS IS ? OUT

There are a few reasons why I do not believe this message to be authentic.

a.   The literal phonetic reading of the numbers / characters;
b.   The use of the figure 0 (zero) and 1 (one); and
b.   The call sign used.

None the less, an interesting catch. Thanks for sharing.

~SIGINT~
« Last Edit: March 28, 2024, 0206 UTC by ~SIGINT~ »
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Offline MDK2

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Re: USAF HFGCS Message 20 MHz USB 2124 UTC 27 MAR 2024?
« Reply #2 on: March 28, 2024, 0522 UTC »
Quote from: ~SIGINT~ on March 28, 2024, 0204 UTC
I am not sure what that transmission was all about but do not believe it to be an authentic HFGCS message.

Going through several passes of audio restoration I was able to recover the majority of the message.

AB0F1I// C6GSF 2QGLI 1UV6G 2ZD?F HYDMZ 2?01I
THIS COMPLETES MESSAGE OF 36 CHARACTERS
THIS IS ? OUT

There are a few reasons why I do not believe this message to be authentic.

a.   The literal phonetic reading of the numbers / characters;
b.   The use of the figure 0 (zero) and 1 (one); and
b.   The call sign used.

None the less, an interesting catch. Thanks for sharing.

~SIGINT~

They were calling the station "storm chaser." Thanks for your thoughts.
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Offline autovon

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Re: USAF HFGCS message at 20 MHz?
« Reply #3 on: March 28, 2024, 1200 UTC »
Interesting recording.  Sounds like a spoof to me also.
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Offline Token

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Re: USAF HFGCS message at 20 MHz?
« Reply #4 on: March 30, 2024, 0319 UTC »
Nice find, wish I had recorded it.

Sounds faked / pirate / hoax to me.  In addition to all the reasons ~SIGINT~ points out, it just sounds wrong and forced.  And the voice is synthetic, something you don't find on HFGCS.

And that leads me to why I wish I had recorded it.  I have lots of faked / hoax signals in my recordings, but never faked HFGCS traffic.

T!
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