[ARC5] [Boatanchors] GO-9: Cathode Mod Questions

[W7FE]

QST September 1963. page 15

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> On Nov 20, 2019, at 10:05 AM, Bill Henderson <bill.henderson at ocdsb.ca> wrote:
> 
> I seem to vaguely recall something like that in a long ago article - but
> not much more.
> 
> Thee may have been mention of specific tubes for different situations.
> 
> What impressed me most was that it plugged right into the key jack (if you
> keyed the cathode).
> 
> - Bill H. / va3hwa
> 
> 
> 
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> 11/20/19,
> 01:01:02 PM
> 
>> On Wed, Nov 20, 2019 at 11:34 AM D C _Mac_ Macdonald <k2gkk at hotmail.com>
>> wrote:
>> 
>> 50 or more years ago, there was a QST article about using a vacuum tube in
>> series with the cathode to ground lead to do cathode modulation.  I seem to
>> remember that it used a 6Y6G and I built one to modulate a pair of 1625s or
>> 807s.  It cut the "normal" amplifier tube cathode current to about half of
>> the CW value.  I don't know anything about a GO-9, but if you choose a
>> modulator tube capable of about half the GO-9 power, this MAY give you
>> satisfactory modulation.  I had no means (scope) in those poor high school
>> student days, but that modulator simply plugged into the normal CW keying
>> jack of the transmitter and seemed to give decent results until I was able
>> to build a "real" plate modulator for my homebrew transmitter.
>> 
>> 73 de Mac, K2GKK/5​
>> Since 30 Nov 1953​
>> Oklahoma City, OK​
>> USAF, Retired ('61-'81)​
>> FAA, Retired ('94-'10)​
>> 
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