[Boatanchors] 6146 question

[Richard Knoppow]

    I said the A and  B were essentially similar. I meant the no suffix 
and the A. The B is not quite the same as detailed in the post.

On 1/28/2024 12:25 PM, Richard Knoppow wrote:
>     The A and B are essentially similar. I think the A has controlled 
> heater warm up for mobile use. Not a significant difference. The B was 
> redesigned, I think by Sylvania, it is physically larger and may not fit 
> in some equipment designed for the A. It also has different 
> interelectrode capacitances and may be difficult to neutralize in some 
> gear not designed for it. A W in a tube type means it was sold to a 
> government contractor. W tubes sometimes have tighter tolerances on 
> specs. Otherwise they are the same as the A version.
>     The Ranger has a very good reputation. Worth restoring.
> 


-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998