[ARC5] Tube Question

[Kenneth G. Gordon]

On 20 Sep 2015 at 11:43, Robert  Eleazer wrote:

> Anyone have any ideas on this?

Slightly mis-calibrated "shunt" control?

Also, one can generally get a good idea of the emission capability of certain 
tubes by reducing the filament voltage a bit and rechecking. If it still shows in 
the same range, then the tube is good as far as emission is concerned.

Ken W7EKB