[Amps] odd problem with Henry 5K

[KA4INM]

On 10/31/13 21:28, Gary K9GS wrote:

> I have heard that some tubes, I think tetrodes, will radiate broadband
> noise if not completely cut off.  Not sure if this happens with triodes
> though.  I check of the bias voltages would be a starting point.

> I'm sure others have more to add to this.

   Any tube that is on the cusp of being cut off will generate a noise 
every time an electron strikes (lands) on the plate, when a minor storm 
(cloud) of then lands there is quite a rushing noise generated.
-- 
   Ron  KA4INM - Youvan's corollary:
                 Every action results in unwanted side effects.