[AMPS] VHF visitation (was power handling...)

[Tom Rauch]

Hi Peter,

> According to Gossling's paper, 'tree like markings' appear, but they can
> be quite small. He goes on:'If the discharge current passes through two
> limbs of a filament placed side by side, these are often pulled together
> by the magnetic attraction of the parallel currents, causing a short
> circuit and spoiling the valve', which sounds  very much like the filament
> heix bending you've observed, Rich.


The symptoms of internal arcing, which is a common event,  fit 
exactly on what is blamed on some parasitic events.

Not only that, if it was an arc it the system wouldn't violate well 
understood physics. It easily explains how and why elements in 
the tube can be damaged without everyone having to pretend that 
emission limitations don't exist.

The explanation that doesn't have to violate the rules that govern 
behavior of a system is the only possible answer.


73, Tom W8JI
w8ji@contesting.com

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