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21. [AMPS] parasitic suppressors (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 8 Apr 1999 13:17:49 +0100; I remember thrashing through all this with Rich, the last time this topic came around. With the typical 100nH/100ohm values we're talking about, the *measured* value of equivalent parallel resistance; /archives//html/Amps/1999-04/msg00155.html (10,494 bytes)
22. [AMPS] parasitic suppressors (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 8 Apr 1999 15:04:29 +0100; I was assuming (possibly mistakenly) a suitable test fixture, so that the connecting lead lengths dropped out of the equation. I presume by 'ideal', Ian means an 'ideal 100nH' and an 'ideal 100 ohms'; /archives//html/Amps/1999-04/msg00156.html (9,711 bytes)
23. [AMPS] parasitic suppressors (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 8 Apr 1999 11:13:46 -0700; ? With the tube not in a state of regeneration, a spectrum analyzer can see trains of damped vhf waves coming from the anode-resonant circuit. The only requisite is that DC current transients be pas; /archives//html/Amps/1999-04/msg00163.html (10,477 bytes)
24. [AMPS] parasitic suppressors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 8 Apr 99 16:53:04 -0500; Hey Rich, do you have any plots from the spectrum analyzer of this? I don't doubt you, it would just be interesting to see. And you can satisfy a lot of curious on lookers by posting something like; /archives//html/Amps/1999-04/msg00169.html (9,981 bytes)
25. [AMPS] parasitic suppressors (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Thu, 8 Apr 1999 17:32:27 -0400; Rich, I have asked you or anyone else for the past 2 years or so to provide a Spectrum Analyzer proof of your claims. Results = ZERO So now you are asking others to show proof? More voodoo IMO. 73 Ca; /archives//html/Amps/1999-04/msg00170.html (9,575 bytes)
26. [AMPS] parasitic suppressors (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 8 Apr 1999 17:38:11 -0700; ? Some of the tests were done by a friend using a spectrum analyzer at his place of employment. The other tests were done by a third party. ? Spark transmitters undoubtedly made RF. -- FAQ on WWW: h; /archives//html/Amps/1999-04/msg00174.html (8,936 bytes)
27. [AMPS] parasitic suppressors (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 8 Apr 1999 17:38:34 -0700; ? Did spark transmitters make RF? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrat; /archives//html/Amps/1999-04/msg00176.html (9,046 bytes)
28. [AMPS] parasitic suppressors (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 8 Apr 1999 23:22:30 -0500; Next time your buddies are doing such a measurement, have them press the plot button. I'd love to see a picture of it. It is funny....any ham radio measurements I made back in the days when I had ac; /archives//html/Amps/1999-04/msg00179.html (8,986 bytes)
29. [AMPS] parasitic suppressors (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 9 Apr 1999 13:36:44 -0400; GRIN! HP and TeK cameras are a few bucks at flea markets these days also. I would get laughed out of work if I failed to hit '"Plot". 73 Carl KM1H ____________________________________________________; /archives//html/Amps/1999-04/msg00188.html (9,114 bytes)
30. [AMPS] parasitic suppressors (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 9 Apr 1999 08:48:34 +0100; The ultimate test is to increase the HV significantly above the normal voltage (which increases the gain) and look for oscillation with no load on either input or output. If the amp survives that tes; /archives//html/Amps/1999-04/msg00206.html (9,493 bytes)
31. [AMPS] parasitic suppressors (score: 1): Author: Peter.Chadwick@gpsemi.com (Peter Chadwick); Date: Mon, 8 Dec 1997 14:48:20 -0000; Rich has said on a number of occasions, and, I believe, without contradiction, that it is well worthwhile measuring the value of parasitic suppressor resistors after a flashover. My question is:- Do; /archives//html/Amps/1997-12/msg00133.html (8,861 bytes)
32. [AMPS] parasitic suppressors (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 8 Dec 1997 15:53:19 +0000; The normal definition of "boiling point" is the temperature at which the vapor pressure of the liquid or solid equals the surrounding pressure - which is rather meaningless under high-vacuum conditio; /archives//html/Amps/1997-12/msg00136.html (9,494 bytes)
33. [AMPS] parasitic suppressors (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Mon, 08 Dec 1997 13:10:11 EST; OVERHEATING would show an external change Peter and it would not take a long time to be evident. A 2W carbon will discolor the paint in short order even at 2x overload for 10 minutes or so. You can r; /archives//html/Amps/1997-12/msg00139.html (12,211 bytes)
34. [AMPS] parasitic suppressors (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 8 Dec 97 10:38:51 -0800; I mentioned this during the parasitics debate. The vacuum in power grid tubes is high. True, although the additional power needed to raise an object in a black-chamber-vacuum to a specific temperatu; /archives//html/Amps/1997-12/msg00140.html (10,656 bytes)
35. [AMPS] parasitic suppressors (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 8 Dec 97 10:38:54 -0800; When a carbon-composition resistor is overheated, visable signs tend to appear in the phenolic covering -- and the resistance slowly increases. When a MOF resistor is overheated, the color in the co; /archives//html/Amps/1997-12/msg00141.html (9,753 bytes)
36. [AMPS] parasitic suppressors (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 8 Dec 97 11:13:49 -0800; Agreed. When #16 -gauge copper buswire carries 15 continuous amperes, it feels barely warm to the touch. It's a sure bet that Rich would not mention this is a possible heat source. This seems unlike; /archives//html/Amps/1997-12/msg00144.html (11,376 bytes)
37. [AMPS] parasitic suppressors (score: 1): Author: w4eto@rmii.com (richard w. ehrhorn); Date: Mon, 8 Dec 1997 14:45:23 -0700; I mentioned this during the parasitics debate. The vacuum in power grid tubes is high. True, although the additional power needed to raise an object in a black-chamber-vacuum to a specific temperatur; /archives//html/Amps/1997-12/msg00150.html (12,834 bytes)
38. [AMPS] parasitic suppressors (score: 1): Author: w4eto@rmii.com (richard w. ehrhorn); Date: Mon, 8 Dec 1997 14:46:28 -0700; Agreed. When #16 -gauge copper buswire carries 15 continuous amperes, it feels barely warm to the touch. With 15 amps @ 28 MHz #16 gets blistering hot in short order. Even #12 gets hot. That's why we; /archives//html/Amps/1997-12/msg00153.html (12,772 bytes)
39. [AMPS] parasitic suppressors (score: 1): Author: w4eto@rmii.com (richard w. ehrhorn); Date: Mon, 8 Dec 1997 15:57:49 -0700; I mentioned this during the parasitics debate. The vacuum in power grid tubes is high. True, although the additional power needed to raise an object in a black-chamber-vacuum to a specific temperatur; /archives//html/Amps/1997-12/msg00155.html (13,022 bytes)
40. [AMPS] parasitic suppressors (score: 1): Author: w4eto@rmii.com (richard w. ehrhorn); Date: Mon, 8 Dec 1997 15:53:52 -0700; Agreed. When #16 -gauge copper buswire carries 15 continuous amperes, it feels barely warm to the touch. With 15 amps @ 28 MHz #16 gets blistering hot in short order. Even #12 gets hot. That's why we; /archives//html/Amps/1997-12/msg00157.html (12,733 bytes)

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