[R-390] 3tf7 replacement proceedure

[Mark Huss]

At first, I used 18 gauge solid wire, bent to fit to center the 
wirewound resistor vertically in the tube socket.  Then, using high 
temperature epoxy, and the bad 3TF7 to make a mold, i made a solid 
plug-in base.  Now it can't fall over and short something.  Used Ohmite 
L12J47R 12 watt, or  the  L25J50R will do, too.  This way if I ever get 
around to getting another 3TF7, I can just plug it in.

Norman J McSweyn wrote:

> Mark, I considered the 47 ohm 10 watt resistor. The problem is how to 
> mount it. 1. Vertically in the tube socket secured how?
> 2. Underneath? Not a lot of space between the bfo shaft and coupler.
> How did you do it?
> Norm
>
>