[R-390] Kahn SSB Converter

[Dave Maples]

All: Also, Kahn made a number of interesting products, including a very good
HF SSB squelch.  I have several in the basement; they are the best HF
squelch I have used that doesn't have good digital delay in it.  Getting
service literature out of Kahn, though, is nearly impossible from my
experience.

Dave WB4FUR

-----Original Message-----
From: r-390-bounces at mailman.qth.net
[mailto:r-390-bounces at mailman.qth.net]On Behalf Of Harold Hairston
Sent: Wednesday, May 07, 2008 8:38 AM
To: rbethman
Cc: R-390 at mailman.qth.net
Subject: Re: [R-390] Kahn SSB Converter


Fascinating subject----to me anyway. Would this mode have been available to
the U-2 program or too recent fot that? I could see systems like those used
by long range bomber missions and the re-fueling program using a system like
this.

Harold
----- Original Message -----
From: "rbethman" <rbethman at comcast.net>
To: "Harold Hairston" <k4hca at alltel.net>
Cc: <R-390 at mailman.qth.net>
Sent: Wednesday, May 07, 2008 8:25 AM
Subject: Re: [R-390] Kahn SSB Converter


> 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
>
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