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Jim, Did you ever get to speak to anyone at Eimac about where the getters were at in a 3-500Z? That's a question I'd say a few of us would like to find out about as I think there is some erroneous

Hi Jim, I understand that tube life is dependend on their vacuum and on the emission from the cathode such that material of it disappears until worn, and then the tube is probably send in for a new

Bill Turner wrote: <snip> They're moving too fast to circle back in that distance. We had a discussion about fluorescence in ceramic tubes some time back and I posted a few pictures of GS-35B's

ORIGINAL MESSAGE: ------------ REPLY FOLLOWS ------------ Wouldn't electrons which "miss" the anode be immediately attracted back to the outside of the anode? Why would they continue out to the glass

I have seen this on 807s running at 750v with this glow on Tx. Soft X-rays are more like >10,000v. As I see it, the effect is caused by electrons from the cathode missing the anode, striking the

If this is the case, why not use the tubes as they are being gettered? This has always been the way that I have done it. Yes

ORIGINAL MESSAGE: wrote: ------------ REPLY FOLLOWS ------------ A good source of HV wire is West Marine. They have a 40 kv marine grade wire. They sell it by the foot so you buy only what you need.

ORIGINAL MESSAGE: wrote: ------------ REPLY FOLLOWS ------------ I don't think this is a defect. Many tubes show a fluorescence on the inside of the glass when operating. I was told it was "soft"

Am 24.09.2006 um 10:47 schrieb pentalab: ;-) It did help. All of them say "I'm the best". That's why I kept asking here. Tnx for sharing your experience! 73, Frank DG1SBG

drive is applied? ... or when both are applied? ### getter's [per Eimac and Svetlana] are ALWAYS working... as long as the fil is lit. HV + drive are not part of the overall process. none of them

Yep, it does, I just tried it. On the crimp version one has to remove the outside plastic insulation in order to crimp it. Cheers, Dick PA3DUV

### If that's the case... then it will also accept Teflon RG- 393 coax.... which is a bit smaller OD than 8-U/213-U [.390" OD for 393 coax.... vs .405" OD for 8-U /213-U Jim VE7RF a bit flimsy. Greg!)

Gents After reading the material from Both Eimac and Svetlana... [extending tube life via proper fil v management] a few yrs back... I thought I would give it a try. At my former workshop location...

Jim, Between my remote 3 phase 400 VAC primary HT PSU (in the garage) and the RF deck in the shack I run 25 ft silicone insulated high voltage cable as used in the neon lighting industry. Around that

After all that discussion on the ...'other reflector' about gettering tubes, I thought I'd add my 2 cents worth. After reading about the detailled gettering info on Svetlana's website years ago... I

wrote: ### Probably either Alden or Kings or Rowe. All 3 x brands have good connectors rated at 25 kv and more. These red/black Millen's are just too mickey mouse. The Phenolic material will

Also the SHV will accept RG8U coax only. Actually the H+S SHV is the same type as the Kings HT connectors, a bit flimsy. I just browsed the http://www.lemo.com/index.jsp site. (Thanks Greg!) These

I have been using Belden 10 KV test prod wire for the last several years.... comes in red/black. I use both red/black on everything......... vey flexible.... abot .21" diam.... silicone rubber. Many

Am 24.09.2006 um 09:52 schrieb pentalab: Which ones would these be? I have found Huber+Suhner (Switzerland) but their SHV type connector is rated at 3.5 kV rms / 5 kV DC only.