[MilCom] Black Projects Aircraft Radio Communications Theories? RE: X

[Ken]

Hello Duane & the group:

Well, awhile back one person privately told me that at least at one regular 
projects testing airfield, ALL aircraft transmissions were encrypted.   Now, 
if that's the case than there's going to be a signal present, albeit you 
won't understand what is said but a signal will be present and this would be 
subject to direction finding techniques.  Of course if it's a spread 
spectrum/encrypted transmission, than there might not be a signal present 
that the milcom hobbyists would be able to receive.

Additionally, I was always under the impression that any aircraft about to 
enter or flying in US airspace has got to report in to an FAA ATC facility 
(however, a special unpublished UHF frequency might be used & this might be 
very difficult to find).  Perhaps that is the window to scooping an unknown 
callsign (but again a callsign could be just about anything).  Also I would 
guess that if the classified aircraft had to make a landing at other than 
specific landing site set up, than there would be some in the clear local 
ATC communications, e.g. approach/control, tower, ground control. 
Additionally the local base support nets would come alive with non typical 
activity.   I think that it's very doubtful that HF radio would be used by 
any of these aircraft, most likely SATCOM & UHF.

I'd guess that one just has to keep a good ear to the scanner & try to 
determine if any black project aircraft are flying in one's monitoring area.

Ken
Springfield MA Monitoring Area

----- Original Message ----- 
From: "Duane Mantick" <wb9omc at nlci.com>
To: <milcom at mailman.qth.net>
Sent: Sunday, November 20, 2005 1:23 PM
snip..snip..
>
>>>>>>If the gov't wants to keep a Black project under wraps, do you
> really think they're going to openly communicate the fact on a
> routine set of frequencies with unencrypted or at the very least,
> "uncoded" communications?