[Amps] Different versions of 3-500 tubes in amp

[Ron Youvan]

On 1/22/19 20:54, Warren KD5YPH Volz wrote:

> I've decided one of the two tubes in my SB-220 is weak and I'd like to
> get a replacement. Right now both are original Eimac tubes with the
> non-graphite anode but I see most replacements are graphite. Will there
> be any issue running tubes with different anodes in this amp?

   I think the nature of the anodes is of minor interest, but the
difference between the emission of a new tube and an old tube is a 
concern.  The new tube should hog the current and make you think the
remaining old tube is also bad.

   I think another used tube or a pair of new tubes is in order.
-- 
   Ron  KA4INM - Youvan's corollary:
                 Every action results in unwanted side effects.