Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+Chokes\s+and\s+Dipping\s+chokes\?\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[AMPS\]\s+Chokes\s+and\s+Dipping\s+chokes\?\s*$/: 28 ]

Total 28 documents matching your query.

1. [AMPS] Chokes and Dipping chokes? (score: 1): Author: zuluhe@hotmail.com (Bill Murphy); Date: Thu, 11 Mar 1999 22:44:06 PST; I have just completed several homebrew chokes, the question is what is the most effective way to use a dip meter to check these chokes for resonance. I have tried several coupling methods, but the di; /archives//html/Amps/1999-03/msg00243.html (8,492 bytes)
2. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 12 Mar 1999 00:58:13 -0800; I couple the dipmeter coil to the side of the hv rfc, about in the middle of the winding. note - Checking above 33Mhz is of no importance in an HF amplifier. . Rich... R. L. Measures, 805-386-3734,; /archives//html/Amps/1999-03/msg00245.html (8,374 bytes)
3. [AMPS] Chokes and Dipping chokes? (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Fri, 12 Mar 1999 07:24:05 -0800; First of all, be sure you are shorting the choke when you test it. You are looking for series resonances, and shorting converts them into parallel resonances which the dip meter can detect. Second, y; /archives//html/Amps/1999-03/msg00251.html (8,824 bytes)
4. [AMPS] Chokes and Dipping chokes? (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 12 Mar 1999 10:47:16 -0500; On Thu, 11 Mar 1999 22:44:06 PST "Bill Murphy" <zuluhe@hotmail.com> writes: There should be no reason to use a coupling loop. The most accurate method is to hold the GDO as far away and still get an; /archives//html/Amps/1999-03/msg00256.html (10,347 bytes)
5. [AMPS] Chokes and Dipping chokes? (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Sun, 14 Mar 1999 19:31:35 -0700; Hi Bill... I agree with both Vic and Carl, but to add a few tidbits: 1) I prefer Carl's approach of checking the frequency with a receiver, as that eliminates one variable (the coupling loop to the f; /archives//html/Amps/1999-03/msg00293.html (11,298 bytes)
6. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 14 Mar 1999 22:48:31 -0800; ? How is placing a wide shorting strap adjacent to the winding not going to affect anything? Why not dip the choke when it is wired in place, 'au naturel'? When my Kenwood dipper's pickup coil is ad; /archives//html/Amps/1999-03/msg00299.html (9,177 bytes)
7. [AMPS] Chokes and Dipping chokes? (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Mon, 15 Mar 1999 11:08:18 -0700; Did I miss something? How can you inductively couple a dipper to any inductor's series resonance without shorting the subject L end-to-end? Any dips you get with the RFC just sitting there, wired int; /archives//html/Amps/1999-03/msg00317.html (10,732 bytes)
8. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 15 Mar 1999 14:16:06 -0800; ? The hv rfc is not just sitting there, Dick. . Wired in, the bottom end of the hv rfc connects to RF ground through the B+ bypass capacitors. The upper end of the rfc connects to the tune-C, which; /archives//html/Amps/1999-03/msg00319.html (9,197 bytes)
9. [AMPS] Chokes and Dipping chokes? (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Mon, 15 Mar 1999 18:02:49 -0500; On Mon, 15 Mar 1999 11:08:18 -0700 "Richard W. Ehrhorn" <w4eto@rmii.com> writes: Nope you didnt miss a thing Dick...I just kept quiet for once and was waiting for the groupies to comment. Agreed. I u; /archives//html/Amps/1999-03/msg00325.html (10,833 bytes)
10. [AMPS] Chokes and Dipping chokes? (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Mon, 15 Mar 1999 19:03:44 -0500; On Mon, 15 Mar 1999 14:16:06 -0800 Rich Measures <measures@vc.net> writes: Not at all. The chap who suggested disconnecting the output tank was much more on track. Your method is a pure hit or miss a; /archives//html/Amps/1999-03/msg00331.html (10,835 bytes)
11. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 16 Mar 1999 00:55:55 -0800; ? Can you explain why the no-strap method would miss a potentially problematic resonance? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/; /archives//html/Amps/1999-03/msg00335.html (10,181 bytes)
12. [AMPS] Chokes and Dipping chokes? (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Wed, 17 Mar 1999 09:30:06 -0500; On Tue, 16 Mar 1999 00:55:55 -0800 Rich Measures <measures@vc.net> writes: Yes I can. Will you explain how an unshorted choke will show series resonances? Later Carl _________________________________; /archives//html/Amps/1999-03/msg00371.html (10,769 bytes)
13. [AMPS] Chokes and Dipping chokes? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 17 Mar 99 10:31:59 -0600; In the tank circuit, the choke IS shorted in terms of RF. Rich is correct. At one end of the choke, you have the HV bypass caps. At the other end, you go thru your DC blocking cap and the Tune C. Tu; /archives//html/Amps/1999-03/msg00375.html (9,877 bytes)
14. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 17 Mar 1999 08:38:46 -0800; end-to-end? Any typically ? ____________ On the bench it won't. Wired in place, a semi-low Z already exists across the choke. Interested third parties are invited to try it and see for themselves if; /archives//html/Amps/1999-03/msg00377.html (10,662 bytes)
15. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 17 Mar 1999 08:53:53 -0800; -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.cont; /archives//html/Amps/1999-03/msg00380.html (9,249 bytes)
16. [AMPS] Chokes and Dipping chokes? (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Wed, 17 Mar 1999 17:20:46 -0700; More often than not, the tune C is NOT of low enough Xc to be irrelevant. Dick In the tank circuit, the choke IS shorted in terms of RF. Rich is correct. At one end of the choke, you have the HV bypa; /archives//html/Amps/1999-03/msg00395.html (10,599 bytes)
17. [AMPS] Chokes and Dipping chokes? (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 18 Mar 1999 04:04:44 -0800; ... which is a good thing since Xc1 tunes out some of the inductive reactance. The bottom-line is are the resonances much different. Try it yourselves and find out. ?? Yo, Dick: Your e-mailer app. d; /archives//html/Amps/1999-03/msg00402.html (9,887 bytes)
18. [AMPS] Chokes and Dipping chokes? (score: 1): Author: k6ll@juno.com (k6ll@juno.com); Date: Wed, 17 Mar 1999 19:49:07 -0700; Last week I made a posting requesting sources of commercial plate chokes, since my homemade choke had arced. I ended up ordering a unit from RF Parts. In the process of removing the old choke and ins; /archives//html/Amps/1999-03/msg00407.html (10,754 bytes)
19. [AMPS] Chokes and Dipping chokes? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 09:17:49 -0600; True, Dick, true. If Tune C is maxed out than Xc could be rather large so your point is well taken. That's one of the reasons why I measured the dip with the choke shorted and just hooked up in circ; /archives//html/Amps/1999-03/msg00408.html (9,255 bytes)
20. [AMPS] Chokes and Dipping chokes? (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Thu, 18 Mar 1999 10:13:05 -0500; On Wed, 17 Mar 1999 08:38:46 -0800 Rich Measures <measures@vc.net> writes: I have tried that, many times over the years. As I said earlier it is a hit and miss approach and repeatable results are not; /archives//html/Amps/1999-03/msg00417.html (9,827 bytes)

Current List: 1 - 20
Page: [1] [2]