[R-390] R390 Non-A notes and mods

[Gary Biasini]

    	I think Dave Medley’s site has been kept alive at r-390.com
    	
    	

    	Gary I. Biasini
    
  




On Sat, May 11, 2019 at 5:13 PM -0600, "Perry Sandeen via R-390" <r-390 at mailman.qth.net> wrote:










Yo Bubba Dudes!,
Dave Medley(sp) who was THE non-A guru left us several years ago and his web site AFAIK is gone.
James 'Andy' Morrer has a R390 site with manuals but there doesn't seem to be any sites that carry the *Learned by the School of Hard Knocks* tips, tricks, and mods. 

 IIRC there was a SS PS regulator circuit published in the Hollow State News years ago.  Considering the cost of tubes, heat and complexity of the OEM circuit, a SS PS mod seems very attractive.
If list members have such data, perhaps it could be posted as a subset on the R390FAQ site?
Since the R390 and R725 were produced in such small numbers helpful tips and hints may be scattered hither and yon.
Gathering, consolidating, and posting such info could prove valuable.
Regards,
Perrier


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Yo Bubba Dudes!,
Dave Medley(sp) who was THE non-A guru left us several years ago and his web site AFAIK is gone.
James 'Andy' Morrer has a R390 site with manuals but there doesn't seem to be any sites that carry the *Learned by the School of Hard Knocks* tips, tricks, and mods. 

 IIRC there was a SS PS regulator circuit published in the Hollow State News years ago.  Considering the cost of tubes, heat and complexity of the OEM circuit, a SS PS mod seems very attractive.
If list members have such data, perhaps it could be posted as a subset on the R390FAQ site?
Since the R390 and R725 were produced in such small numbers helpful tips and hints may be scattered hither and yon.
Gathering, consolidating, and posting such info could prove valuable.
Regards,
Perrier


______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html