[R-390] Kahn SSB Converter

[Sheldon Daitch]

My experience with the units using a pilot carrier is to overcome the
minor drifting in both the TX and the RX systems.  Remember, at
the time a lot of this gear was being used, the systems weren't nearly
as frequency stable as equipment is today. 

Many times, one of the ISB channels, especially on the military side,
would have a 16 channel AFSK tone pack and frequency stability is
critical for those circuits to work.

Today's synthesized rigs using very stable time base sources are very
stable on the air, and a system designed today would probably never
need the pilot carrier.

73
Sheldon
WA4MZZ

Bob Camp wrote:

> Hi
>
> I have no direct experience with the unit you have. Some of the dual  
> ISB demods would run without the carrier, the same thing is true of  
> the quad demods. My understanding is that the Kahn units need the  
> carrier. I could be wrong.
>
> Bob
>
>
> On May 7, 2008, at 9:12 PM, ToddRoberts2001 at aol.com wrote:
>
>> Hi All,
>> Very interesting on the comments so  far on the Kahn SSB converter.  
>> It is
>> still not clear to me though will the Kahn  unit still work as a  
>> plain SSB
>> converter when hooked up to an R-390A? Will it  only work with a  
>> suppressed carrier
>> ISB signal or can it still demodulate a  regular LSB or USB signal  
>> without
>> carrier?
>>
>> Does anyone in the group  actually have a working Kahn SSB  
>> converter?  I have
>> one I picked up several  years ago that is still in the box waiting  
>> for a
>> 'rainy day' to hook it up to  see if it works at all. In the  
>> meantime I have had
>> no luck finding a manual or  much information on it.
>>
>> Thanks for any further tips or info on the  unit.
>>
>> 73 Todd WD4NGG
>>
>>
>>
>>
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