[Scan-DC] 233.75, 249.95, 268.65 & 360.4

Wed, 6 Aug 2003 18:52:34 -0400

John,
Yep it seems so. I had posted on MILCOM as well. I was hoping somebody =
out
at Edwards might be able to chime in and provide some input. I figure it =
is
flight test associated and might also be used out there. Unfortunately I
received no additional info on it so I will unlock them periodically and
check them out when time permits.=20

I did get one response that said the navy referred to this type of
transmission as a "WHITE RAT".=20

Have a good one,

Jeff

-----Original Message-----
From: [email protected] =
[mailto:[email protected]]
On Behalf Of john wilson
Sent: Wednesday, August 06, 2003 1:57 PM
To: Jeff
Cc: Scan-DC
Subject: Re: [Scan-DC] 233.75, 249.95, 268.65 & 360.4

  Since that is an aircraft test facility the comms probably are
deliberately
configured that way.

Jeff wrote:

> Folks,
>
> I am fishing for some thoughts on this one. In the past I have heard =
audio
> on this freq that I have chosen to call "COCKPIT RECORDER". I'll =
explain:
> Usually the comms seem to be fed from a mic that appears to be =
constantly
> on. I would not go as far to say it is a HOT MIKE because you can =
audibly
> hear every little background noise in the cockpit, like the alarms, =
engine
> noise, you can even hear the voice coming over the radio in the
background.
>
> In the past, the only comms I have heard on this one were from the =
cockpit
> of the FA-18 E/Fs at PAX River undergoing flight test. To the best of =
my
> knowledge, I personally can't say I have ever heard any other flight =
test
> program use this type of transmission.
>
> For lack of knowledge on what this is for, over time, through =
listening I
> have made the following educated guess. I am "assuming" that since
Military
> fighters do not have a "Black Box", that they use this to transmit all
> cockpit audio to a voice recorder on the ground for various purposes, =
just
a
> guess.
>
> Some additional detail on it is that I can hear the cockpit talk to
"DATA",
> (the flight test coordinator) and I can hear Data's response. Then I =
can
> hear the pilot switch to PAX ground to advise of engine start-up and =
hear
> grounds response as well. And it goes this way throughout the test =
flight.
I
> can hear the pilot switching freqs but can hear both sides of audio no
> matter which freq he switched to.
>
> I have several freqs noted for the same type of use at PAX 233.75, =
249.95,
> 268.65 & 360.4. Today I had 2 different flight tests doing this on =
268.65
&
> 249.95. I have a lot of audio on it and will review again later and =
take
> notes and repost anything interesting.
>
> Anyway, I was wondering if anyone has ever heard comms like this and =
might
> be able to offer up some additional thoughts on this from past =
experience.
> It is kind of neat to listen to because you can listen to all comms =
from
> beginning to end for a particular flight with on one freq, pretty =
cool.
:-)
>
> Have a good one,
>
> Jeff
>
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