[R-390] Kahn SSB Converter

[rbethman]

Harold,

The USAF used (uses) it quite a bit.

Command comms to airborne crews.

I NEVER knew the Army to use it - BUT - I was just the Grunt on the ground!

Bob - N0DGN

Harold Hairston wrote:
> All very interesting! Is this type equipment still in operation? What 
> type of communications wold utalize this mode. Who was/is Kahn? I 
> assume the era was 60's - 70's??? I have been around the loop a couple 
> of times, including Army Sig Corps service and never heard of the mode 
> or Mr. Kahn. Maybe too new for me.
>
> Harold
>
> ----- Original Message ----- From: "Bob Camp" <ham at cq.nu>
> To: "rbethman" <rbethman at comcast.net>
> Cc: <R-390 at mailman.qth.net>
> Sent: Wednesday, May 07, 2008 7:45 AM
> Subject: Re: [R-390] Kahn SSB Converter
>
>
> Hi
>
> Lots of people use this kind of stuff.
>
> The Airphone system started out with a Kahn SSB setup using a -20 db
> suppressed carrier at UHF. The FCC rejected it as not being spectrally
> efficient enough. Had to go back and put a pilot tone in the middle of
> the audio to make them happy. Thank goodness it didn't change my end
> of it though ....
>
> Bob

-- 
Bob Bethman/NØDGN/BC-610/Northern Radio 
SP-600 Manassas, VA - MultiBand Dipoles