[R-390] SSB Adapters and Treetop Circuits

[brianpepperdine brianpepperdine]

I am intrigued by this info...if in part only because the originated 
fellow is from Ontario, like me!
However at this point I have two working TMC CV-571 units at hand... I 
was going to sell one but the guy wanted MINT condx adapter so I figure 
I just will hold onto the redundancy.
Sadly, my 390A stopped working below 8 Mhz... I have looked into it 
somewhat but as I am recovering from abdominal surgery it will be 
sometime yet before I hefting a 390A around and about. I might hand it 
off to my ham friend to look into fixing it.... he knows them...but 
still face the issue of getting the radio out of the house. Maybe my 
brother in law can be enlisted as brute force mechanism........but I 
really should look into it first just in case its a bad cap in that part 
of the IF deck.....
tnx
Brian VE3HI  Toronto ON


    ------ Original Message ------
    From: jwkoest at charter.net
    To: sandeenpa at yahoo.com; r-390 at mailman.qth.net
    Sent: Monday, July 4, 2022 9:19 PM
    Subject: Re: [R-390] SSB Adapters and Treetop Circuits

          Perry,

  Glad you made your escape.  Life is good here in the eastern part of 
the country! We are blessed to live in eastern Tennessee.

  Joe/W4NSA

  -----Original Message-----
  From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> On 
Behalf Of Perry Sandeen via R-390
  Sent: Monday, July 4, 2022 1:18 PM
  To: r-390 at mailman.qth.net
  Subject: [R-390] SSB Adapters and Treetop Circuits

  Yo List,
  We escaped Californicate in Aug 2021 and now have bought a house in 
Clinton, SC.
  We chose this area as I'm working with Glen Scott who owns DSM Labs.
  Glen is a list member who for 24 years has specialized in re-maning 
mostly R390A for people who contact him directly. He also does R388's, 
R390's, R392 and rarely R389's and R391's.
  Glen also does repairs on some other types of equipment. He wrote and 
article on how to re-do R39X series of front panels.
  Unfortunately for the moment, serious health issues have had him from 
doing any work.
  My plan is to start re-maning and upgrading SP 600's which 
unfortunately is way behind schedule because of house and family medical 
issues.
  There are several SSB conversion circuit in the Y2KR3 manual.  A 
number of SSB circuits from the past postings are not viable as the 
necessary parts are not available.
  I'm in negotiation with Bob Thomas who owns Treetop Circuits to buy 
his complete operation. There is another list member who is interested 
in working with me on making the same SSB adapters using a different 
name.
  It would probably be 2 to 3 months before we would have products for 
sale.
  Two very expensive and hard to find are the Sherwood (almost 
impossible to find) and Hammarlund HC10 SSB adapters.
  Whether or not it's worth the effort to do the revised Captain Lee 
circuit depends what level of skill, determination and tools one has.
  Regards,
  Perry KM6FQV












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