[GreenKeys] Mainline TTL FSK Demodulator from 1965

[COURYHOUSE at aol.com]

they did a wonderful job building it!
What a treasure!
 
Ed#
 
 
In a message dated 6/20/2013 8:19:25 A.M. US Mountain Standard Time,  
n4be_jim at yahoo.com writes:

The  photo link in my initial posting may have been corrupted.  Here it is  
again:
http://s685.photobucket.com/user/N4BE/library/Mainline%20TT-L%20FSK%20Demodu
lator?sort=3&page=1
Really  a blast from the past.
Jim N4BE

 
 




Message: 1
Date: Tue, 18 Jun  2013 17:20:25 -0700 (PDT)
From: "Jim M." <_n4be_jim at yahoo.com_ (mailto:n4be_jim at yahoo.com) >
To: "_greenkeys at mailman.qth.net_ (mailto:greenkeys at mailman.qth.net) "  
<_greenkeys at mailman.qth.net_ (mailto:greenkeys at mailman.qth.net) >
Subject:  [GreenKeys] Mainline TTL FSK Demodulator from  1965
Message-ID:
<_1371601225.12530.YahooMailNeo at web142706.mail.bf1.yahoo.com_ 
(mailto:1371601225.12530.YahooMailNeo at web142706.mail.bf1.yahoo.com) >
Content-Type:  text/plain; charset="utf-8"

I acquired a homebrew tube FSK demodulator  from an eBay
estate sale.? Probably a silent key.? The seller was in  Crawford, Ga.? 
?
The photos are at 
http://s685.photobucket.com/user/N4BE/library/Mainline%20TT-L%20FSK%20Demodulator
?
The  demod works perfectly as far as I can tell.? The photos don?t do it 
justice,  it was
planned and constructed in professional manner by whoever did  it.
?
This is actually a demodulator based on the design in Oct.
1965  QST Magazine.? There is a brief
description at http://www.rtty.com/development/tu/ttl-fsk/ttl-fsk.htm
?
My  question is does anyone know who the ham might have been
who built this?? I  asked the estate
seller but got no response.? I actually
built one of  these in 1967 when I was a kid, but mine was no where as well
built and  compact as this.? Brings back a
lot of memories.
?
Jim N4BE
_n4be_jim at yahoo.com_ (mailto:n4be_jim at yahoo.com) 
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