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.
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