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1. [AMPS] Plate RFC choke design (score: 1): Author: kdbalmforth@mail.hac.com (kdbalmforth@mail.hac.com); Date: Thu, 26 Mar 1998 18:10 -0700 (PDT); Does anybody have a proven design for a plate choke? I'm building a 160-10 (no WARC) amp using a pair of 3CX800A7 tubes, (1.5A max Ip). I've seen lots of plate RFC designs that use anywhere from 80 u; /archives//html/Amps/1998-03/msg00434.html (8,211 bytes)
2. [AMPS] Plate RFC choke design (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Thu, 26 Mar 1998 22:51:16 EST; Its moderately easy if you own a GDO Kevin. If not it may be easier just to buy one...the big Ameritron is good and also reasonable. I would not use Delrin. Stick to ceramic or hard Teflon. One desig; /archives//html/Amps/1998-03/msg00437.html (9,446 bytes)
3. [AMPS] Plate RFC choke design (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 26 Mar 98 20:02:56 -0800; There is a section in *Amplifiers* about hv-rf chokes: www.vcnet.com/measures Basically, two chokes mounted at right-angles work better than one. Nope, if you do your homework. . #20 silicone-varnis; /archives//html/Amps/1998-03/msg00438.html (8,959 bytes)
4. [AMPS] Plate RFC choke design (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Thu, 26 Mar 98 22:32:58 -0600; Kevin, Plate chokes are an art as I have learned. The biggest problem is the doggone resonances. My PA had a Hammond 1521 in it and I couldn't figure out why it kept blowing up on 10m. Well, after c; /archives//html/Amps/1998-03/msg00439.html (11,576 bytes)
5. [AMPS] Plate RFC choke design (score: 1): Author: W6RU@aol.com (W6RU); Date: Fri, 27 Mar 1998 03:22:40 EST; Jon, For what it's worth...I agree totally with you. I have built many amps over the years and had my share chokes melt down or blow up. The two chokes in series works very well. I suggest as AG6K do; /archives//html/Amps/1998-03/msg00441.html (8,677 bytes)
6. [AMPS] Plate RFC choke design (score: 1): Author: m.j.willis@rl.ac.uk (Mike Willis); Date: Fri, 27 Mar 1998 08:51:28 +0000; This is certainly the way to go, but make sure you get them in the right order and space them well apart and mutually at right angles to the tank coil. -- FAQ on WWW: http://www.contesting.com/ampfaq; /archives//html/Amps/1998-03/msg00442.html (8,449 bytes)
7. [AMPS] Plate RFC choke design (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 27 Mar 98 05:05:48 -0800; yea, verily, unless one is trying to build a charcoal-lighter for the bar-B. indeed, and 'tis mo' betta to dip the hv rfc wired in place. That's the popular, traditional, cherished, old theory, at l; /archives//html/Amps/1998-03/msg00445.html (13,904 bytes)
8. [AMPS] Plate RFC choke design (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Fri, 27 Mar 98 07:15:25 -0600; Mine are both at right angles to the tank coil and they are about 6 inches apart. They are not at right angles to each other though. They both run the same direction. One is mounted a little higher; /archives//html/Amps/1998-03/msg00446.html (8,913 bytes)
9. [AMPS] Plate RFC choke design (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Fri, 27 Mar 1998 17:37:20 -0700; Hi Jon & everyone... A big caveat on the two choke approach: contrary to what seems intuitively correct at a glance, two chokes in series - even if at right angles as they should be - do NOT exhibit; /archives//html/Amps/1998-03/msg00455.html (13,838 bytes)
10. [AMPS] Plate RFC choke design (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Fri, 27 Mar 1998 17:45:34 -0700; Hi Guys.... Just one comment ............. That's the popular, traditional, cherished, old theory, at least. However, orienting two coils end-to-end seemed to me like it would enhance coupling, not d; /archives//html/Amps/1998-03/msg00456.html (8,936 bytes)
11. [AMPS] Plate RFC choke design (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Fri, 27 Mar 1998 13:43:02 EST; On Fri, 27 Mar 1998 17:45:34 -0700 "Richard W. Ehrhorn" <w4eto@rmii.com> writes: Dick, the old National R-175 was a part of almost every amp project until 15M came along...it was hot at 21 MHz. The r; /archives//html/Amps/1998-03/msg00461.html (9,661 bytes)
12. [AMPS] Plate RFC choke design (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 27 Mar 98 20:10:26 -0800; I never tested a variable-diameter design. // It looks to me like your e-mailer is not doing attribute marks correctly at the beginning of each line. cheers Rich... R. L. Measures, 805-386-3734, AG6; /archives//html/Amps/1998-03/msg00467.html (8,802 bytes)

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