[R-390] R390A RF deck advice

[Barry]

It might be picky of me, but, I think that's about a 44% error, correct?

Barry - N4BUQ

Sent from my iPad

> On Jan 8, 2015, at 10:49 PM, Roger Ruszkowski <flowertime01 at wmconnect.com> wrote:
> 
> 
> 27 / 39 is about a 30 % error. 
> Consider your skill level and all that could go wrong. You may just want to leave it alone.
> 
> 
> Roger AI4NI
> 
> 
> -----Original Message-----
> From: ngietz <ngietz at mymts.net>
> To: r-390 <r-390 at mailman.qth.net>
> Sent: Thu, Jan 8, 2015 2:50 pm
> Subject: [R-390] R390A RF deck advice
> 
> 
> Hi all, first I want to thank everyone who responded with advice about replacing 
> C227 
> (I think it was) in a general overhaul of this 1963 Teledyne RF deck.
> Now, I have several more questions:
> 1)How critical are the values of the 27 ohm resistors on some of the grids?  A 
> couple
> are up to 36 or 39 ohms.  What effect if any would that kind of difference have 
> on 
> receiver operation or gain?
> 2)Some time ago I ordered some replacement slugs for the tuning coils and they 
> came
> with brass slot head screws rather than the Bristol spline screws I was 
> expecting.  The 
> slugs are still coded with the red and white dots.  Is there a chance I got 
> incorrect slugs
> or are the brass screw slugs just a late manufacturing change?
> 3) Does anyone disconnect the heater line on HR202?  Seems to me the crystals 
> and
> associated components would last longer without all that heat.  That corner of 
> the
> deck has the worst cluster of out-of-spec resistors etc., and I suspect the heat 
> did it.
> I’d guess there might be a slight effect on stability, but I’m not using it for 
> RTTY.
> Thanks for all your wisdom!
> Nelson Gietz
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