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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*R\:\s+\[AMPS\]\s+L\-Pi\s+net\.\.\.downside\?\s*$/: 21 ]

Total 21 documents matching your query.

1. R: [AMPS] L-Pi net...downside? (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sun, 1 Aug 1999 23:40:16 +0200; Vic, with some care and a bit of experience in correct positioning and wiring, the problem to find or realize proper components to have and keep a standard PI network whose loaded Q is 10 is a fake o; /archives//html/Amps/1999-08/msg00008.html (10,043 bytes)
2. R: [AMPS] L-Pi net...downside? (score: 1): Author: itr@nanoteq.co.za (Ian Roberts); Date: Tue, 03 Aug 1999 13:46:22 +0200; Hams are meant to use grip-dip meters and not worry about "Q" factors. On the input circuit (amp "OFF"!), get the deepest dip (check the harmonic response), on the output circuit, check for dips acro; /archives//html/Amps/1999-08/msg00066.html (9,724 bytes)
3. R: [AMPS] L-Pi net...downside? (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 3 Aug 1999 05:34:27 -0700; ? Pi-networks and L networks are not resonant on the working frequency. Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submis; /archives//html/Amps/1999-08/msg00068.html (10,853 bytes)
4. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 3 Aug 1999 13:36:14 +0100; What do you mean by 'resonance' in this context? The definition is very important. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative; /archives//html/Amps/1999-08/msg00069.html (8,287 bytes)
5. R: [AMPS] L-Pi net...downside? (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 3 Aug 1999 07:36:13 -0700; ? the dip you see with a dipmeter coupled to a Pi-network is not on the operating frequency. . Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting; /archives//html/Amps/1999-08/msg00075.html (8,510 bytes)
6. R: [AMPS] L-Pi net...downside? (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 3 Aug 1999 09:59:34 -0700; ? Do you believe that a Pi-network is resonant on the working frequency, Peter? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.htm; /archives//html/Amps/1999-08/msg00077.html (8,747 bytes)
7. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Tue, 3 Aug 1999 17:34:08 +0100; Now there's a new definition that's not in any of the textbooks............not a very scientific one either, if I may so, Rich. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampfaq.html Su; /archives//html/Amps/1999-08/msg00078.html (8,615 bytes)
8. R: [AMPS] L-Pi net...downside? (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 4 Aug 1999 06:11:27 -0400; Careful Peter, it's a very special dip meter. It can also measure Q, and the anti-resonant frequency of a control grid just by placing it near the socket leads. According to Rich's magic grid dip me; /archives//html/Amps/1999-08/msg00082.html (9,216 bytes)
9. R: [AMPS] L-Pi net...downside? (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 4 Aug 1999 04:39:07 -0700; ? I am familar with control grid resonance. For the 3-500Z, this is 80 - 90 MHz. What is anti-resonant frequency of the control grid, Tom?. ? RL = 2000 ohms. R out equals 50-ohms. Freq = 7.00MHz. Q; /archives//html/Amps/1999-08/msg00084.html (9,883 bytes)
10. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 5 Aug 1999 09:53:18 +0100; Rich asks: Yes - by my definition of resonance, which is that a particular frequency designated the resonant frequency, in a network consisting of inductive, capacitive and resistive elements, the ap; /archives//html/Amps/1999-08/msg00101.html (9,531 bytes)
11. 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)
12. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 5 Aug 1999 14:34:32 +0100; Folks, please note that we have had serious e-mail screw ups here this week, and it is probable that e-mails to me have bounced, and that sent e-mails have disappeared without making it to the outsid; /archives//html/Amps/1999-08/msg00107.html (10,793 bytes)
13. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 5 Aug 1999 15:53:40 +0100; PI It depends. If all you're interested in is being a '25 year appliance operator' without an interest in technical matters and not meeting the definition of amateur radio -'technical self training; /archives//html/Amps/1999-08/msg00109.html (9,509 bytes)
14. 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)
15. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 5 Aug 1999 17:49:54 +0100; Rubbish. Twaddle. WRONG!!! Do the mathematics of series parallel transforms. is a I am That's an approximation that applies only to the complete network and falls over at low values of Q. It may be o; /archives//html/Amps/1999-08/msg00113.html (10,021 bytes)
16. R: [AMPS] L-Pi net...downside? (score: 1): Author: mgilmer@gnlp.com (Gilmer, Mike); Date: Thu, 5 Aug 1999 13:00:44 -0400; 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. "a different result" , huh? That says a lot. Mike N2; /archives//html/Amps/1999-08/msg00114.html (8,909 bytes)
17. 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)
18. 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)
19. 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)
20. R: [AMPS] L-Pi net...downside? (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Fri, 6 Aug 1999 09:43:24 +0100; Mauri, you say training I've been an RF professional for 35 years now, and I'm still learning (self training) through doing things in amateur radio. But if you let loose thinking, poor approximations; /archives//html/Amps/1999-08/msg00131.html (8,802 bytes)

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