[Boatanchors] National SW-3 screen resistor

[Vic Rosenthal]

Al Klase wrote:

> Now you've got me going.  This set has 237 stamped on the audio tube 
> socket, and 5-pin unlabled ceramic sockets ('36) in the other two 
> positions.  

Mine is the same.

> The power cable is a 5-conductor affair with a separate lead 
> for the screens.

The previous owner of mine replaced the cable, but this is the way it is 
currently hooked up.

> B+ is controlled by a long-shafted rotary switch mounted vertically on 
> the chassis just in front of the antenna and ground terminals.  You need 
> to lift the lid to get to it. All looks original.

I have seen SW-3's with this switch, which I think is to switch between 
battery and AC operation.  My chassis has a hole (apparently original) 
there, and it doesn't look like a switch was ever mounted there (no 
scratches).

The front panel hole on my radio is on the left, not the right as I've 
seen in pictures, and is slightly higher than the hole for the antenna 
trimmer.  As I said, it looks ham-made, but of course it could have been 
enlarged.  It is 1/2" diameter.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco