[R-390] EAC R-390A parts needed

[rbethman]

All,

    The first thing we ALL need to keep in mind - It is the OWNER'S 
prerogative to do what THEY wish with THEIR radio.  Whether WE agree or 
not.  It is indeed THEIRS.

    I have both a '52 Collins R-390A/URR and a '67 EAC.

    I'm NOT about to modify them.  Repair as needed, replace the 
notorious BBODs, and maintain them - YES!

    I've even built a wood cabinet without ventilation ability.  Still 
works GREAT.

    If  anyone wants to change things?  Go for it!  It is YOURS!

Bob - N0DGN

Dave Merrill wrote:

>I think the evidence is pretty good that IERC tube shields reduce
>internal tube temperatures and prolong tube life.  Collins did 
>employ them on later tube gear.  Can't fault earlier engineers 
>for using components that were accepted practice, but when something
>clearly better appears, why not use it?
>
>BTW, was Nolan's radio from an early Collins contract?  IIRC, it was
>a '67 EAC with IERC shields.
>
>/dave
>N9ZC
>
>  
>
>>I find it extremely interesting that after Collins designed these GREAT 
>>radios and they were built to work 24/7/365 with covers, shields, 
>>adverse operating conditions, voltages all over the scale, vibration and 
>>i could go on forever.
>>Then the radios became available to to public domain, then all of a 
>>sudden a whole new bunch of WANNABEE redesign engineers come up with all 
>>of these far out theories and solutions to further their case or mostly 
>>their pocket books to sell the SS replacements for a perfectly working 
>>ballast tube or to enhance the audio, which is fine. It was not designed 
>>to be concert hall performer. It was designed to listen some of the 
>>worst signal reception signals in the world for the state of the art at 
>>the time.
>>Covers and shields were there for a reason.
>>The Spec's say how and where the radio was DESIGNED to OPERATE.
>>The enhancements help to some extent.
>>
>>We all remember our lost somewhere in the Louisiana swamps Nolan Lee and 
>>his radio that ran over 7 years 24/7 with out a 3TF7 failure and with 
>>voltage fluctuations up and down with covers on and all shields in place 
>>with it meeting the same spec's (period)
>>
>>Recap yes. align yes, then plug and play and pass it on to first your 
>>born still running.
>>
>>IF IT WORKS WHY FIX IT????
>>
>>My .0002 worth.
>>
>>Hank
>>KN6DI
>>
>>
>>
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>>R-390 mailing list
>>R-390@mailman.qth.net
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>>    
>>
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>
>  
>

-- 
<                      Bob Bethman - N0DGN
+-------------------------------+----------------------------------+
| N0DGN AMRadio Manassas, VA    |          Home Builder            |
+-------------------------------+----------------------------------+
| Bob Bethman                \\\|///     " The absence of a danger |
| <rbethman@comcast.net>    \\ ~ ~ //      signal does *NOT* mean  |
| Bethman Fine Homes        (/ @ @ /)      that everything is OK " |
+-------------------------oOOo-(_)-oOOo----------------------------+
|               <http://home.comcast.net/~rbethman>                |
| 1 BC-610I w/BC-614I,1 T-213/GRC-26 w/BC614I 1 '51 Collins R-390A |
| 1 '67 EAC R-390A, Heathkit DX-60, Apache, Mohawk, SX-101, HT-32A |
+------------------------------------------------------------------+
|           Amateur Astronomer - Celestron Nexstar 8               |
|             12" f5 Dob coming soon!  Being built                 |
|                  Meade ETX-60 (Got it back!)                     |
|               38 Deg 46.8' N - 77 Deg 28.5' W                    |
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