- 1. [AMPS] impedance of nichrome lower (score: 1)
- Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net)
- Date: Wed, 10 Sep 1997 15:39:36 +0000
- Sorry Carl, I figure anyone dishing it out as much as you should also be pretty thick skinned on the receiving end. ;-) I'll try to be more civil to you, and I sincerely hope you reciprocate. In any
- /archives//html/Amps/1997-09/msg00229.html (11,452 bytes)
- 2. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Wed, 10 Sep 97 17:45:04 -0800
- The Tom Rauch/W8JI vhf suppressor had slightly more R and slightly more L than the resistance-wire (Handy-Measures) vhf suppressor - so it had a slight advantage. However, at 150MHz, according to Mr
- /archives//html/Amps/1997-09/msg00233.html (9,570 bytes)
- 3. [AMPS] impedance of nichrome lower (score: 1)
- Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK)
- Date: Thu, 11 Sep 1997 08:46:57 +0100
- Not true, as DejaNews would show, but I'll bite again. The N7WS measured Rp and Lp values for Rich's suppressor at 100MHz are Rp = 103.2 ohms, Lp = 123.9nH. With ideal components, those are the R and
- /archives//html/Amps/1997-09/msg00240.html (11,430 bytes)
- 4. [AMPS] impedance of nichrome lower (score: 1)
- Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net)
- Date: Thu, 11 Sep 1997 13:28:56 +0000
- To: <amps@contesting.com> Hi Ian, Not true as Dejanews says, and not as I recall either. The same is also so with Rich's references to my making comments about Rich's nurse. As a matter of fact, jus
- /archives//html/Amps/1997-09/msg00245.html (11,758 bytes)
- 5. [AMPS] impedance of nichrome lower (score: 1)
- Author: km1h@juno.com (km1h @ juno.com)
- Date: Thu, 11 Sep 1997 14:50:27 EDT
- On Thu, 11 Sep 1997 08:46:57 +0100 "Ian White, G3SEK" Which is roughly determined to be the frequency of the highest amount of G-P feedthru...is that a valid assumption Ian? If not, then how would YO
- /archives//html/Amps/1997-09/msg00247.html (13,675 bytes)
- 6. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Thu, 11 Sep 97 12:15:10 -0800
- In the 260 plus kilo-word archive, which I did not fully read, I found where I asked Messrs. Stewart, Rauch, Bertini and Coffman to design one, however I could not find an instance of my asking you.
- /archives//html/Amps/1997-09/msg00248.html (10,903 bytes)
- 7. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Thu, 11 Sep 97 12:48:18 -0800
- To: <amps@contesting.com> ...... ...snip Bzzzzzzzzzt. More smoke. . There were two such blatherings. Wes said it during the during the suppressor debate. You made a similar comment after the debate
- /archives//html/Amps/1997-09/msg00249.html (9,916 bytes)
- 8. [AMPS] impedance of nichrome lower (score: 1)
- Author: km1h@juno.com (km1h @ juno.com)
- Date: Thu, 11 Sep 1997 17:11:06 EDT
- On Thu, 11 Sep 1997 13:28:56 +0000 w8jitom@postoffice.worldnet.att.net writes: To: <amps@contesting.com> The rest SNIPPED It could stop if there was agreement Tom. The way I view it is that there are
- /archives//html/Amps/1997-09/msg00254.html (13,379 bytes)
- 9. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Thu, 11 Sep 97 17:21:48 -0800
- To: <amps@contesting.com> There can never be an agreement as long one party refuses to answer questions, stonewalls, smokescreen, and denies the results of standard AC circuit analysis. Amen, Carl.
- /archives//html/Amps/1997-09/msg00257.html (11,010 bytes)
- 10. [AMPS] impedance of nichrome lower (score: 1)
- Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK)
- Date: Fri, 12 Sep 1997 07:14:10 +0100
- Maybe... but it isn't directly relevant to this thread which is basically about the network itself, not how you'd use it. As far as I remember, the suppressors were supplied to Wes by Rich and by Tom
- /archives//html/Amps/1997-09/msg00263.html (11,190 bytes)
- 11. [AMPS] impedance of nichrome lower (score: 1)
- Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net)
- Date: Fri, 12 Sep 1997 06:37:45 +0000
- To: <amps@contesting.com> Hi Carl, Here's something to mull over, since you opened the door...... You haven't missed a thing carl. N7WS tested a totally different suppressor that had more inductance
- /archives//html/Amps/1997-09/msg00265.html (14,965 bytes)
- 12. [AMPS] impedance of nichrome lower (score: 1)
- Author: km1h@juno.com (km1h @ juno.com)
- Date: Fri, 12 Sep 1997 11:46:04 EDT
- Tom, I appreciate all your feeddback; it gets me a bit closer to understanding. Since your reply was so long, I will not reproduce it here. But a few salient points: The way I read Wes' report is tha
- /archives//html/Amps/1997-09/msg00276.html (11,773 bytes)
- 13. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Fri, 12 Sep 97 16:28:40 -0800
- According to a graph of Wes' measurements of the similar suppressors, the Rp (and Q) values seem to parallel each other over a fairly wide range of frequencies, separated by a gap of roughly 40%. .
- /archives//html/Amps/1997-09/msg00282.html (14,528 bytes)
- 14. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Fri, 12 Sep 97 16:28:44 -0800
- To: <amps@contesting.com> ...snip... Ten-Tec's Titan uses a silver-strap Ls'. Does it seem likely that the Q of a #18 ga resistance-wire Ls would be 2X higher at 200MHz? ...snip... 'rewriting'? 'dis
- /archives//html/Amps/1997-09/msg00283.html (9,915 bytes)
- 15. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Sat, 13 Sep 97 10:54:00 -0800
- ...snip... And the little red hen said........ I calculated the dissipation myself in the 200 ohm Rs and it was 42W at 29MHz. However, 42W will quite quickly evaporate any of the Rs resistors used e
- /archives//html/Amps/1997-09/msg00288.html (10,840 bytes)
- 16. [AMPS] impedance of nichrome lower (score: 1)
- Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net)
- Date: Mon, 15 Sep 1997 10:35:47 +0000
- Not all that difficult, since I measured several nichrome suppressors here over the years Rich. When all the BS is sorted out, the end result is there is VERY little difference between the "magic cu
- /archives//html/Amps/1997-09/msg00301.html (9,543 bytes)
- 17. [AMPS] impedance of nichrome lower (score: 1)
- Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net)
- Date: Mon, 15 Sep 1997 10:35:47 +0000
- To: <amps@contesting.com> Hi Carl, That was my understanding of what he did. About four turns over a 1/2 watt carbon composition type resistor. Yes. That must have been a 220 or something with longe
- /archives//html/Amps/1997-09/msg00302.html (15,589 bytes)
- 18. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Mon, 15 Sep 97 09:44:25 -0800
- ...snip... coil Yea, verily This was essentially what I was thinking when I tried resistance-wire VHF parasitic suppressors in 1986. Perhaps this is similar to what amateur radio pioneer and Handbook
- /archives//html/Amps/1997-09/msg00304.html (14,432 bytes)
- 19. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Mon, 15 Sep 97 10:58:59 -0800
- To: <amps@contesting.com> ...snip... True enough, Mr. Rauch IF the 29MHz dissipation in Rs is Not a consideration -- which is the point you would apparently like for everyone to miss, but which seem
- /archives//html/Amps/1997-09/msg00306.html (10,848 bytes)
- 20. [AMPS] impedance of nichrome lower (score: 1)
- Author: measures@vc.net (Rich Measures)
- Date: Mon, 15 Sep 97 10:59:03 -0800
- ... and you did not publish the results because_____________? - It seems fairly obvious to me that you did not measure the *VHF* characteristics of a resistance-wire suppressor prior to your post of
- /archives//html/Amps/1997-09/msg00307.html (9,194 bytes)
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