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1. [AMPS] Rocky Point effects (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 8 Mar 2000 18:34:25 -0500; It has always appeared to me that normal well documented arcs and sparks in tubes have been used to sell nichrome. Terry's amplifier very well could have been the victim of just such a common effect,; /archives//html/Amps/2000-03/msg00486.html (9,916 bytes)
2. [AMPS] Rocky Point effects (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 8 Mar 2000 19:01:26 -0500; Woops That should "WITHOUT enough accumulated impedance" 73, Tom W8JI w8ji@contesting.com -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative request; /archives//html/Amps/2000-03/msg00489.html (8,007 bytes)
3. [AMPS] Rocky Point effects (score: 1): Author: dhearn@ix.netcom.com (dan hearn); Date: Wed, 08 Mar 2000 16:54:19 -0800; I have been waiting patiently for someone to mention Rocky Point effect in connection with "big bangs" in linear amplifiers. Tom finally brought up the subject with a very interesting post. I first h; /archives//html/Amps/2000-03/msg00490.html (10,180 bytes)
4. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Thu, 9 Mar 2000 00:39:43 -0700; Tom -- My position has always been that unless gas is subsequently found with a high-pot., an arc is not logical. Tom's answer is that the gas disappeared because of gettering. Is gettering very lik; /archives//html/Amps/2000-03/msg00496.html (11,906 bytes)
5. [AMPS] Rocky Point effects (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 9 Mar 2000 09:07:56 -0000; Yes ..........me! 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@conte; /archives//html/Amps/2000-03/msg00497.html (8,484 bytes)
6. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Thu, 9 Mar 2000 02:00:44 -0700; "Rocky Point" was 1932. The explanation sounds a bit like guesswork. No photograph of a "Rocky Point" arc-mark is shown to the reader. In 1935, G. W. Fyler's "Parasites in Transmitters" makes more s; /archives//html/Amps/2000-03/msg00498.html (11,484 bytes)
7. [AMPS] Rocky Point effects (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 9 Mar 2000 13:07:48 +0000; Yes. If there is a small gas release, the gettering action (which depends on the gas molecules colliding with the metal surfaces) would take place on a timescale of seconds. That's way too slow to pr; /archives//html/Amps/2000-03/msg00503.html (9,792 bytes)
8. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Thu, 9 Mar 2000 12:44:09 -0700; A big bang is heard. The main breakers blow. What souce powers the tube during the gettering? It is my opinion that instant gettering is undiluted codswallop. With copper atoms, yes. I have never he; /archives//html/Amps/2000-03/msg00505.html (10,754 bytes)
9. [AMPS] Rocky Point effects (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 9 Mar 2000 22:20:20 +0000; Nobody mentioned "instant" gettering. I said a timescale of seconds. The reaction is chemical. No electrical power is required. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist; /archives//html/Amps/2000-03/msg00508.html (9,491 bytes)
10. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Thu, 9 Mar 2000 16:42:14 -0700; A maximal load of codswallop. The reaction requires heat. enough - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesti; /archives//html/Amps/2000-03/msg00510.html (9,468 bytes)
11. [AMPS] Rocky Point effects (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 10 Mar 2000 14:09:03 +0000; I had written: Rich Measures replied: Oh no, not enough yet... I respect to your practical experience of HF amps, but I will not defer to your ignorance. Many contributors to this list have qualifica; /archives//html/Amps/2000-03/msg00538.html (11,893 bytes)
12. [AMPS] Rocky Point effects (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 10 Mar 2000 10:02:42 -0500; Textbooks covering design and manufacture of vacuum tubs specifically describe an arc as one of the means of gettering a tube. One doesn't need a PhD obtained in study of low pressure gas reactions t; /archives//html/Amps/2000-03/msg00543.html (12,166 bytes)
13. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Fri, 10 Mar 2000 08:49:26 -0700; The key word is "actually". This means that a load of codswallop is quite likely to come down the chute. . (''gas up and fail'') Hows about taking a bow for your discovery of Tune-C resonances, Mr. R; /archives//html/Amps/2000-03/msg00548.html (9,089 bytes)
14. [AMPS] Rocky Point effects (score: 1): Author: k7fm@teleport.com (Colin Lamb); Date: Fri, 10 Mar 2000 11:07:12 -0800; That's why 3-500Z's and similar tubes actually gas up and fail when operated too "cold" for extended periods. The key word is "actually". This means that a load of codswallop is quite likely to come; /archives//html/Amps/2000-03/msg00549.html (9,840 bytes)
15. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Fri, 10 Mar 2000 12:11:41 -0700; Colin -- your e-mailer app, Dollar Bill's Microsoft Outlook Express 5.00.2615.200, is seemingly not doing attribution marks correctly. Do tubes ''gas up and fail'' when they are stored in boxes? Goo; /archives//html/Amps/2000-03/msg00552.html (10,617 bytes)
16. [AMPS] Rocky Point effects (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 10 Mar 2000 19:07:48 -0600; Why is "actually" the key word, Rich? And please show us some SCIENTIFIC proof that this "codswallop" as you call it really is "codswallop." Unless you can back up your claim scientifically, don't ma; /archives//html/Amps/2000-03/msg00557.html (10,135 bytes)
17. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Fri, 10 Mar 2000 18:37:48 -0700; This is a somewhat difficult thing to explain to anyone who has not had extensive experience with car salesmen. Do you believe that tubes gas up and fail when they are in the mfg.'s sealed box.? Wit; /archives//html/Amps/2000-03/msg00558.html (10,511 bytes)
18. [AMPS] Rocky Point effects (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 10 Mar 2000 20:46:08 -0600; Why not. If the gases are trapped in the surface of the metal why would some not escape? Also, since it is IMPOSSIBLE to create a perfect vacuum there is certainly some gas still left inside the tube; /archives//html/Amps/2000-03/msg00559.html (11,057 bytes)
19. [AMPS] Rocky Point effects (score: 1): Author: 2@vc.net (measures); Date: Fri, 10 Mar 2000 19:52:58 -0700; This info is in Will's 1M-word grate parasitics debate archive. Tom is quite unlikely to discuss it in any way. the If you bring Jesus Christ into this thread, I'm outta here, Jon. No foolin'. At is; /archives//html/Amps/2000-03/msg00560.html (12,201 bytes)
20. [AMPS] Rocky Point effects (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 10 Mar 2000 22:02:21 -0600; You know the answer. Tell us. ??????? I'm a person of faith. But my faith and ham radio amplifiers have nothing to do with each other. So why would I bring it into this thread? What's ur point? Why n; /archives//html/Amps/2000-03/msg00561.html (11,177 bytes)

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