[Boatanchors] SW-3 Tube Shield
Al Klase
ark at ar88.net
Mon Feb 29 12:36:47 EST 2016
Gang,
Both of my SW-3's have tube shields on the RF amplifier tube. One has a
National type TS, and the other is a type T58. There is an aluminum
mounting ring around the tube socket. Either shield will fit either radio.
Picture of similar shields here:
http://thumbs3.ebaystatic.com/d/l225/m/mm0nChYyASSna3FIJRfoVvw.jpg
Mine are 2.05 inches O.D.
Hope that helps a little,
Al
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
On 2/29/2016 6:14 AM, Bill Cromwell wrote:
> Hi Gary,
>
> The SW-3 set I have does not have nor use tube shields. In the SW-3
> sets that I know about the tubes are inside shield compartments. I
> have the documents for the SW-3 models and none of them mention nor
> show any tube shields. I have a supplemental document in PDF format
> that describes how the shield compartments in the SW-3 were designed.
> Manuals are available at BAMA under 'National'. Other documents are
> available on the net. Google "national sw-3".
>
> 73,
>
> Bill KU8H
>
>
>
> On 02/28/2016 10:34 PM, Gary H. Harmon, Jr. wrote:
>> A good friend in Hawaii needs a tube shield for a SW-3 receiver he is
>> restoring. Does anyone have one they don't need?
>>
>>
>> 73,
>>
>>
>> Gary H. Harmon, Jr. - K5JWK - HAM Radio and ATARI Archaeologist
>>
>>
>
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