[R-390] The Y2K Maintenance Addendum (was: Christmas Wish List)

[Roy Morgan]

At 12:05 AM 12/8/2005, Barry Hauser wrote:
>As one of the gang of three, with supporting cast, let me cast some light 
>on the origins of the Y2K manual....I did the original OCR work.


Barry,
and others who contributed:  THANKS.

(Some of) Barry's suggested changes/additions are:


>  -- Incorporation of some of the more established mods/workarounds -- ...
>
>-- Capacitor "hit list", updated for some of the silver micas that seem to 
>be failing.
>
>-- More on PTO adjustment by make of PTO
>
>-- Troubleshooting -- lifted from TM-4000

To this I would add:

  -- Mechanical Filter topics (testing, repair, alternatives)

  -- Signal generator topics (impedances, actual RF input levels, matching) 
and other test bench topics

  -- The gear train rebuild

  -- The Noise Figure measurements/testing and tube selection

Barry continues:

>... is it necessary or that helpful to have everything imaginable between 
>a single set of (electronic) covers?  I dunno. ... Realistically, a lot 
>depends on Al's availability if and when some new volunteers contribute 
>material or pitch in to prep it for inclusion.

I agree, and so I PROPOSE:

That we assemble a Y2K-like addendum.  Call it:

      The
21st Century
R-390A/URR
Maintenance Addendum
And Miscellaneous Notes

FURTHER, I volunteer to help put it together.  I'm a good writer, and the 
R-390 receivers are among my favorite topics.  I am somewhat known for my 
diatribes on fused line cord plugs and the making of widows, and the 
dangers of variacs.  The beating of dead horses in those areas seems to be 
fairly infrequent nowadays, so I could use a new topic.

The thing could start as a web page that either assembles or links to 
work-in-progress type sub-pages. Once the material is written, edited, and 
gathers comments from folks who have used it, the transition to the PDF 
format would make sense.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Cell 301-928-7794
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