We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Author Topic: USAF "Andrews" YL 8992u 2130-2135utc 1/31/2012  (Read 856 times)

ETM71

  • Guest
USAF "Andrews" YL 8992u 2130-2135utc 1/31/2012
« on: February 01, 2012, 0026 UTC »
USAF "Andrews" YL 8992u 2130-2135utc 1/31/2012

YL w/ phonetics message.

USAF Andrews_8992u_2130-2135_20120131.mp3
« Last Edit: February 01, 2012, 2046 UTC by ETM71 »

Offline Token

  • Global Moderator
  • DX Legend
  • *****
  • Posts: 1798
    • View Profile
Re: USAF Andrews YL 8992u 2130-2135utc 1/31/2012
« Reply #1 on: February 01, 2012, 0140 UTC »
This frequency is part of the US Air Force HF-GCS (High Frequency Global Communications System).  All US military branches can and do use this system, but it is an Air Force system.  Other common freqs to watch are 4724, 6739, 8992, 11175, 13200, and 15016 kHz.  Most frequently a message is simulcast on all of those frequencies at the same time.

The most common message format is what hobbiest call an "EAM".  EAM stands for Emergency Action Message.  In fact all of the messages heard are not EAMs, but it is easiest jsut to lump them together.  Also, it is kind of impossible to tell the difference ;)  It is often possible to hear 30 or more such messages in a day.

Another message format heard is the "Skyking" message, you will recognize it the first time you hear it.

Mutiple transmitters are located around the World on each frequency, and they can all be selected to transmit at the same time with the same message, so despite the fact you might hear a message sign off as "Andrews" that does not mean the transmitter you are hearing is actually located at Andrews AFB.

T!
T!
Mojave Desert, California USA