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21. [AMPS] Pi-Net math (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 05:16:21 -0700
? I don't have one. Eimac defines Q as the ratio between RL and the reactance of C1. None of the Eimac formulae can be used without choosing a value of Q - as defined by their definition . ? A defin
/archives//html/Amps/1999-08/msg00105.html (13,827 bytes)

22. R: [AMPS] L-Pi net...downside? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 05:16:24 -0700
? Would this sort of resonance be likely to register on a dipmeter? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submission
/archives//html/Amps/1999-08/msg00106.html (10,413 bytes)

23. R: [AMPS] L-Pi net...downside? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 09:40:39 -0700
? The Eimac definition of R/XC1 is one. The other definition of Q is a lot more complicated and gives a different result. I use Eimac Q. I am lazy. ? When an L-network is resonant, it is a dead shor
/archives//html/Amps/1999-08/msg00112.html (11,430 bytes)

24. R: R: [AMPS] L-Pi net...downside? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 12:44:35 -0700
? Mauri -- Is someone forcing you to read the thread about resonance of Pi-networks? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfa
/archives//html/Amps/1999-08/msg00116.html (6,866 bytes)

25. R: [AMPS] L-Pi net...downside? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 12:44:37 -0700
? hear, hear. 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 Administrative requests: amps-R
/archives//html/Amps/1999-08/msg00117.html (9,031 bytes)

26. R: [AMPS] L-Pi net...downside? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 13:36:19 -0700
The difference is not large, Mike. 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 Administra
/archives//html/Amps/1999-08/msg00118.html (8,876 bytes)

27. R: [AMPS] L-Pi net...downside? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 13:36:21 -0700
? If the reactance of the inductor is equal to the reactance of the capacitor, the L-network presents a short to the generator. What is the impedance of a series-resonant circuit? lazy. ? Are Ian's
/archives//html/Amps/1999-08/msg00119.html (10,354 bytes)

28. [AMPS] Pi-Net math (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 5 Aug 1999 15:53:13 -0700
? There are nevertheless two ways to define Q. ? You can read it on pages 35, 36, and 37 in *Care and Feeding of Power Grid tubes. Q is used in all three formulas. Q is not calculated. Q is selected
/archives//html/Amps/1999-08/msg00121.html (10,070 bytes)

29. [AMPS] Pi-Net math (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 6 Aug 1999 01:16:52 -0700
Eimac defines Q using RL. Q = RL/XC1. My contention is that with RL and Ro connected to the Pi-network, the resonant frequency is neither decreased nor increased. ...... Rich... R. L. Measures, 805-
/archives//html/Amps/1999-08/msg00126.html (9,362 bytes)

30. [AMPS] Pi-Net math (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 6 Aug 1999 01:16:54 -0700
? What is the "output device"? 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 Administrative
/archives//html/Amps/1999-08/msg00127.html (9,359 bytes)

31. [AMPS] Clipperton L Plate Choke (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 6 Aug 1999 01:16:55 -0700
? At least 5% from the edge of a ham band. ? 200uH is plenty for 160m operation. // There's some info on my Web site about winding HV-RFCs. - cheers, Jeff Rich... R. L. Measures, 805-386-3734, AG6K,
/archives//html/Amps/1999-08/msg00128.html (7,714 bytes)

32. [AMPS] Pi-Net math Help (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 6 Aug 1999 01:17:01 -0700
? Isn't there a loaded Q and an unloaded Q? ? Agreed. . And how much improvement do the new, improved formulas afford the user? Ian calculated 5.57 uH. I calculated 5.06uH using the old, less than p
/archives//html/Amps/1999-08/msg00129.html (10,258 bytes)

33. [AMPS] RJ1A relays (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Thu, 1 Jul 1999 06:24:58 -0700
? The problem is not corrosion. Air in the output vac. relay will eventually destroy the input relay. A new RJ-1A typically has a DC breakdown potential of 5000v. However, if a ceramic-metal seal is
/archives//html/Amps/1999-07/msg00005.html (8,013 bytes)

34. [AMPS] SB-200 (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Fri, 2 Jul 1999 06:57:56 -0700
? Carl Heuther's business telephone number is 603-635-1170 (Jeremy Communications) . - cheers, Shane. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.con
/archives//html/Amps/1999-07/msg00010.html (6,981 bytes)

35. [AMPS] RJ-iA relay contact-life on CW? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sat, 3 Jul 1999 08:38:26 -0700
Does anyone on [AMPS] know of a case where a CW person managed to wear out the contacts on a Jennings RJ-1A vacuum-relay? - thanks. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
/archives//html/Amps/1999-07/msg00018.html (7,764 bytes)

36. [AMPS] RJ-iA relay contact-life on CW? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sat, 3 Jul 1999 14:44:13 -0700
? I have seen something similar when residual magnetism builds up in the armature. The fix is to reverse the polarity to the coil. ? sounds familiar. . ? indeed, until one reverses the coil to begin
/archives//html/Amps/1999-07/msg00024.html (11,854 bytes)

37. [AMPS] PS diode equalizing (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sat, 3 Jul 1999 14:44:17 -0700
With 16 diodes per leg and 4kV out, each diode c. 1/4 of its rated piv. . I would be happy with a bit less safety factor, Bill Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- F
/archives//html/Amps/1999-07/msg00025.html (8,719 bytes)

38. [AMPS] RJ-iA relay contact-life on CW? (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sat, 3 Jul 1999 15:02:16 -0700
? Not surprising. The vac. relay is driven from a 50v source in the 77. . It takes about double that potential to make the RJ-1A-26 relay switch fast enough for modern transceivers. ? I believe this
/archives//html/Amps/1999-07/msg00026.html (9,377 bytes)

39. [AMPS] Cathode strapped to filaments pros/cons (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sun, 4 Jul 1999 08:08:40 -0700
? To avoid the possibility of breaking down the fil./heater insulation during a glitch. Another problem is that If a heater/cathode arc takes place, it is possible that the heater wire can be severe
/archives//html/Amps/1999-07/msg00034.html (7,692 bytes)

40. [AMPS] Re: Opening tubes for inspection (score: 1)
Author: measures@vc.net (Rich Measures)
Date: Sun, 4 Jul 1999 08:08:43 -0700
? I clamp the anode of the kaput tube in a vise, with the base sticking out horizontally. Using a fine-tooth sheet-metal cutting coping-saw blade, I saw through the sheet metal just above the anode-
/archives//html/Amps/1999-07/msg00035.html (8,654 bytes)

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