On 5/13/2011 8:06 PM, John Lyles wrote:
Aint workin' with "the big stuff" a hoot!
73
Roger (K8RI)
> A TH628 double-ended tetrode ("Diacrode") has been purring along all day
> heating a water load with 26 kV plate voltage, and 110 amps of plate current.
> At 200 MHz, it's been
> quite a leap, average power today was 180 kW in the load, 2 MW peak in
> pulses. A little RF leakage was causing havoc before, now fixed. On Monday,
> it'll stretch out with around
> 250 kW average, based on the good test results today, Friday, the 13th. I'm
> posting this AFTER testing - worried about even trying today. Me,
> superstitious?
> I remember being nervous about dipping the plate too slowly on a 3-500Z at
> full voltage in my SB220 years ago. This monster makes me jumpy when someone
> closes a book or drags a chair
> around the test bench... Is been an experience not to forget, for this ham.
> 73
> John
> K5PRO
>
>
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