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Total 61 documents matching your query.

41. [Amps] new amp race (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Tue, 23 May 2017 05:55:18 -0700; <A 2 el Shorty 40 isnt out of anyones capability as Cushcraft has proven for <several decades and now more brands are available with decent performance as <compared to the rotary dummy loads of the p; /archives//html/Amps/2017-05/msg00256.html (9,706 bytes)
42. Re: [Amps] new amp race (score: 1): Author: Thomas Walsh <w2co@comcast.net>; Date: Tue, 23 May 2017 07:58:13 -0600; Ditto on the yc-156 or better known ,as the 3cx5000A7, it will run on Ep of 3kv and higher, at 25w in you get 1.5kw out, input imp.= 25ohms, even the pulls from the mri world which only down by a db; /archives//html/Amps/2017-05/msg00257.html (11,744 bytes)
43. Re: [Amps] new amp race (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Tue, 23 May 2017 15:17:08 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: Shouldn't it be more linear than that? 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.; /archives//html/Amps/2017-05/msg00259.html (8,558 bytes)
44. Re: [Amps] new amp race (score: 1): Author: "Peter Voelpel" <dj7ww@t-online.de>; Date: Tue, 23 May 2017 17:52:50 +0200; You will have that temperature pretty fast when you operate a 3CX3000 at half of its maximum dissipation in a relatively small shack. 73 Peter, DJ7WW Now you will never have 104 deg F in the shack __; /archives//html/Amps/2017-05/msg00261.html (8,115 bytes)
45. Re: [Amps] new amp race (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Tue, 23 May 2017 15:51:54 -0400; Good luck on finding a good YC-156 these days, which is a special selected 3CPX5000A7/YC-179 which uses a 3CPX15000B grid and cathode. They have pretty much been replaced with SS and most of the offe; /archives//html/Amps/2017-05/msg00263.html (13,445 bytes)
46. Re: [Amps] new amp race (score: 1): Author: Morel Grunberg <gmorel@netvision.net.il>; Date: Wed, 24 May 2017 00:15:35 +0300; With such linearity, I don't want to be your neighbour. 73 de Morel, 4X1AD -- ORIGINAL MESSAGE --(may be snipped) On Tue, 23 May 2017 05:55:18 -0700, Jim wrote: input, -59 db IMD3. -- This email has; /archives//html/Amps/2017-05/msg00266.html (8,493 bytes)
47. Re: [Amps] new amp race (score: 1): Author: "Jeff AC0C" <keepwalking188@ac0c.com>; Date: Tue, 23 May 2017 16:46:59 -0500; The YC156 is a great tube but it has two issues - assuming you have a good tube. First (minor issue) is the grid current limit is 100 mA and with low B+ you can get serious grid current with moderate; /archives//html/Amps/2017-05/msg00267.html (13,204 bytes)
48. Re: [Amps] new amp race (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Tue, 23 May 2017 23:53:03 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: Easily fixed with the L-network described in any recent ARRL handbook in the amplifiers section. Requires just one small coil in the plate lead and like; /archives//html/Amps/2017-05/msg00269.html (9,025 bytes)
49. Re: [Amps] new amp race (score: 1): Author: "Jeff AC0C" <keepwalking188@ac0c.com>; Date: Tue, 23 May 2017 20:16:38 -0500; Uh huh. There is Cout that is manageable -- and then there is the YC156. I am pretty sure that anyone who has actually been-there, done-that with this tube - would use the term "easily" in conjunctio; /archives//html/Amps/2017-05/msg00270.html (9,937 bytes)
50. Re: [Amps] new amp race (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Tue, 23 May 2017 21:59:29 -0400; The real problem is the layout and anode coupling to everything around it, it is not a tube to be put in the smallest possible enclosure unless it is plywood! The added L before the the Tune cap or t; /archives//html/Amps/2017-05/msg00271.html (11,804 bytes)
51. Re: [Amps] new amp race (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Tue, 23 May 2017 22:04:07 -0400; Or lived within 5 mi of an airport. Takes permission to fly one or even RC models. 73, Roger (K8RI) Thanks for the advice. However -- I suspect you've never seen a redwood forest. They're dense -- if; /archives//html/Amps/2017-05/msg00272.html (10,375 bytes)
52. Re: [Amps] new amp race (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Wed, 24 May 2017 10:20:18 +0800; Don't forget to smear some aluminium jointing compound in the joint between the grid flange of the YC156/YC179 and the raw aluminium chassis. Electrolysis/corrosion sets in extremely quickly if you d; /archives//html/Amps/2017-05/msg00273.html (13,018 bytes)
53. Re: [Amps] new amp race (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Wed, 24 May 2017 03:03:33 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: I admit I have not applied the L-network fix to that particular tube, but I have done it with a Heathkit SB-1000 modified for six meters and was able to; /archives//html/Amps/2017-05/msg00275.html (9,508 bytes)
54. Re: [Amps] new amp race (score: 1): Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>; Date: Wed, 24 May 2017 06:26:41 +0300; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2017-05/msg00276.html (8,609 bytes)
55. Re: [Amps] new amp race (score: 1): Author: "Jeff AC0C" <keepwalking188@ac0c.com>; Date: Tue, 23 May 2017 23:26:55 -0500; A single band amp, 3-500z glass tube - that's not even a beginners challenge by comparison. the Cout is about 7x higher plus the monster anode on the YC156 makes a hell of a good capacitor with the e; /archives//html/Amps/2017-05/msg00278.html (11,259 bytes)
56. Re: [Amps] new amp race (score: 1): Author: Thomas Walsh <w2co@xxxxxxxxxxx>; Date: Wed, 24 May 2017 06:27:18 -0600; Well where it was being used (63mhz) in pulsed service using 10kv on the plate, the schematic etc. one can use their tricks easily on 1/3 that freq... Sent from my iPad ______________________________; /archives//html/Amps/2017-05/msg00283.html (10,484 bytes)
57. Re: [Amps] new amp race (score: 1): Author: Ron Youvan <ka4inm@xxxxxxxxx>; Date: Wed, 24 May 2017 10:49:38 -0400; Well where it was being used (63mhz) in pulsed service using 10kv on the plate, the schematic etc. one can use their tricks easily on 1/3 that freq... In MRIs they pulse cryogenically cooled coils w; /archives//html/Amps/2017-05/msg00284.html (9,290 bytes)
58. [Amps] new amp race (score: 1): Author: "Jim Thomson" <jim.thom@xxxxxxxxx>; Date: Wed, 24 May 2017 09:56:53 -0700; <A single band amp, 3-500z glass tube - that's not even a beginners challenge by comparison. the Cout is about 7x higher plus the monster anode on the YC156 makes a hell of a good capacitor with the; /archives//html/Amps/2017-05/msg00290.html (13,739 bytes)
59. [Amps] new amp race (score: 1): Author: "Jim Thomson" <jim.thom@xxxxxxxxx>; Date: Wed, 24 May 2017 10:08:21 -0700; <You will have that temperature pretty fast when you operate a 3CX3000 at half of its maximum dissipation in a relatively small shack. 73 Peter, DJ7WW winter, but useless in summer. I instead put it; /archives//html/Amps/2017-05/msg00291.html (8,913 bytes)
60. Re: [Amps] new amp race (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Sun, 4 Jun 2017 03:47:45 -0400; My TH-5 at 100 feet was too high by all calculations, but that was the only place I had for it and man did it play well on DX. If I could hear 'em, I could "usually" work them on one call. Statistica; /archives//html/Amps/2017-06/msg00012.html (9,812 bytes)

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