[Amps] R. MEASURES PRAYERS ANSWERED

[R L Measures]

Mr. ____?:  A 3-500Z grid to filament short can be produced by  
exerting a lateral force of 10g for approx 50-seconds --- provided  
that 5.8v is applied  of he filament.  There are a number of aircraft  
that are capable of such, but few pilots.
Another method is a VHF parasitic oscillation whilst using a 3kV to  
4kV anode supply that does not have a peak current limiting (glitch)  
resistor in the HV+ lead or some means of grid-fusing.

On Jun 3, 2006, at 10:00 AM, Gudguyham at aol.com wrote:

> In a message dated 6/2/2006 5:47:24 PM Eastern Daylight Time,  
> r at somis.org writes:
> W7MOI purchased a new Henry 2K-4A.  Nothing at all happened when he
> rotated the tune and load controls with zero drive.  After almost 8-
> years of almost daily use, he announced that the 2k-4A was perfectly
> stable.  Within a week, he heard a big bang and subsequently
> discovered that both 3-500Zs had grid-fil shorts.
> What caused the shorts?  A Parasitic?  Is that the only explanation?
>

R L MEASURES, AG6K. 805-386-3734
r at somis.org