[Scan-DC] 14.924.10 MHz

Sat, 22 Jun 2002 00:09:37 +0000

Before you head to the hills you may want to review this website. It has
audio samples for many of the types of digital signals you are hearing.
Some are data, some are digital voice. This website will let you hear
the different ones and identify them.

http://people.wiesbaden.netsurf.de/~signals/DIG_intro.htm

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of William D. Rossiter
III
Sent: Friday, June 21, 2002 23:50
To: Scan-DC (E-mail)
Subject: [Scan-DC] 14.924.10 MHz

The signal is still there!  It has become very, very weak, but it is
still there.  Turn your squelch down all the way.  You will barely hear
it, but a strange wave-like noise is in the background.  I have no idea
what it is or why it has become so dull.  Maybe because the ionispere is
closing up, or maybe because we are currently under a small pocket of
solar weather that is causing the propagation to weaken.  It has the
strangest sound.  It isn't ordinary data or computerized morse code.
This is something strange.  That i've never heard before.  I believe
this signal is really two or more individual signals mushed together.
Not only that, but the pitch of the signal is constantly going up and
down.  Sort of like "Do Re Me Fa Me Re Do".  And every time the pitch
goes up, a smaller, more suttle, pitch goes down.  I wander what this
thing is?  Does anyone know about the dynamics of 20 meter radio?  Has
the US government ever used this band for international unidentified
transmissions (like the ones that anybody can always hear between 4 and
10 MHz, and of course the federal government and the FCC both deny the
existence of)?  I dont have any of those machines (I think they are
called spectrum analyzers) that map out a radio transmission.  But I
made the folowing model of what I believe the signal might look like.
Keep in mind that each wave is one of the individual signals that are
mushed in with the others.

=          =          =
 =        = =        =
  = +    =   +      = +
  +=  + =  +  =+   =+
+   =  =+      = +=
     ==         ==