Hi Gary,
I used Google and from several sites, I get this type of information:
USAF HF Global Communications System (The old GHFS Net) This will be your
easiest catch of Military Communications. 11.175 MHz being the most active
freq
----- Original Message -----
From: "Gary Tillinghast" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, April 11, 2012 5:23 PM
Subject: Re: hf listening
Hi all, Sounds like Andrews air force base and OFFED air force base. They
sometimes send a bunch of letters and numbers and occasionally send weather
info. There is no structure on what time they transmit. Gary KB2YAA
----- Original Message -----
From: "PATRICK GORMLEY" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, April 11, 2012 4:36 PM
Subject: hf listening
I just tuned up on 11.175 and heard a lot of noise but no unusual =
signals.