[R-390] Wanted to Trade

[David Wise]

IERC and similar shields will take the bulb
temperature well below naked.

FWIW,
Dave Wise

> -----Original Message-----
> From: Flowertime01 at wmconnect.com [mailto:Flowertime01 at wmconnect.com]
> Sent: Wednesday, May 04, 2005 8:08 PM
> To: r-390 at mailman.qth.net
> Subject: Re: [R-390] Wanted to Trade
> 
> 
> Scott,
> 
> You may not need that many shields.
> Recommendations were to shield the RF, 1st, 2nd, 3rd mixers, VFO, BFO.
> Just the RF mixers and Osc need shields. Recommendations were 
> to uncover
> every thing else.
> 
> We know the good shields will run cooler than the plain cans.
> I do not know if the good shields will actually get you a 
> cooler glass bulb 
> temperature than no shield with ventilation being the same.
> So it still may be best to run most of the tubes naked.
> 
> Just because we used those crummy old shields is not reason 
> to continue.
> We put in better caps today, so why not better shields.
> 
> Round up as many as you can. One never has enough spare parts.
> 
> Roger KC6TRU
> 
> 
> _____________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/faq.htm
> Post: mailto:R-390 at mailman.qth.net
> Unsubscribe: http://mailman.qth.net/mailman/options/r-390
>