[Lowfer] Tacamo 17.8 kHz

[ToddRoberts2001 at aol.com]

In a message dated 1/23/2011 4:42:51 P.M. Eastern Standard Time,  
dexter.mc at gmail.com writes:

The E4-B planes that were put into service during the 70s had had  
massive tunning units for the trailing wire VLF antenna.  I got a  chance 
to see the comm gear on one of these planes at Andrew AFB.  For  about 6 
years I operated one of the UHF GEPs (ground entry points) that  provided 
circuits to the planes which was relayed to submarines.  

Dex
 
 
Hi Dex,
That sounds like you have had some neat experience  operating
one of the ground stations for the airborne VLF transmitter  planes 
and also got to see the gear used in the plane. I am  sure they
are probably using different planes nowadays?
 
Also wonder do you think it would be possible to find a  program
somewhere that would enable someone to decode the narrow  50Hz
shift RTTY still used on some VLF transmitters? It might  be interesting to 
try 50Hz shift RTTY on 600  meters or 137KHz and see how it compares to 
170Hz shift RTTY?
 
It sounds like the U.K. VLF transmitter on 22.1KHz is still  sending 50Hz 
shift
RTTY and the Russian RDL transmissions on 18.1KHz sound  like
50Hz shift RTTY. I think there are some other signals below  100KHz
that are using 50Hz shift RTTY.
 
I am sure they are probably sending in code groups but it  would be fun
to see an actual decode of a VLF transmitter off the  air.
 
Thanks - 73 Todd WD4NGG