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Current flowing has nothing to do with the rate at which electrons are being boiled off of the tungsten dicarbide (W^2C) layer on the filament.

What kind of flowers do you want, Tony?

To me that is hard to believe. I never recognized any emission current higher then a few microamps without voltages on other electrodes of a tube. Without anode voltage there will be only a cloud of

So how can a 3-500 be gettered by running the filament only?

Amen, Jim, and when thoriated-tungsten

My take on gettering / gas contamination, or the lack thereof, is that it mainly came from a station who was trying to explain big-bang arcing in the output sections of HF/MF amplifiers by a means

The evidence is that they strike glass, causing it ti fluoresce. I've seen 4-1000As with glass that turned pale brown where electrons had been banging it. R L MEASURES, AG6K. 805-386-3734 r@...

quite, provided the magnet is on a long enough, insulated stick. R L MEASURES, AG

wrote: working... as long as the fil is lit. HV + drive are not part of the overall gettering process. 4CX-10,000J... don't come whining to me ! use 48 hrs to getter a new/rebuilt tube.... and

Jim, Below is a quote from Terman on this subject. "Zirconium is also a useful metal in this regard. Zirconium at 1400 deg C will absorb copius quantities of such gasses as oxygen, nitrogen, carbon

getters like it have applied ### No I have not. 1 e-mail to eimac ought end the discussion . Rauch claims amperex etc... all use zirconium coated anodes... and gettwring is done when tubes shoe

wrote: the emission and then current flows? ### anode/grid current/drive power has nothing to do with emmision. Take 2 x identical linear's..... one with just the fil /blower on.[no HV no drive

That's an excellent idea Bill. I will have to try that the next time I test GS-35B's. Don't know if I will be able to see much with the ceramic but I would bet it would be easy to see with glass

ORIGINAL MESSAGE: ------------ REPLY FOLLOWS ------------ Perhaps so, but if they can accelerate to a certain speed in the half inch or so between cathode and anode, why could they not decelerate an

ORIGINAL MESSAGE: <w4zt-060920@...> wrote: ------------ REPLY FOLLOWS ------------ One way to prove it once and for all would be to try to deflect the beam with a magnet. Electrons would be

I use HN connectors for high voltage and use RG213 as a conductor. the chassis side I found a mate with a long leakage path. wa1gfz pentalab <jim.thomson@...> wrote: --- In

They can't reverse direction quick enough? R L MEASURES, AG6K. 805-386-3734 r@...

the rays glass. I've seen this in sweep tubes also many times. The glass had a blue glow in places where there were holes open in the anode. I think