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Total 23 documents matching your query.

1. [Amps] 3-500zs to 8877 (score: 1): Author: Donald Fox <taurusshoguy@yahoo.com>; Date: Wed, 21 Jan 2009 06:11:09 -0800 (PST); Gentlemen: Just submitting a quick poll to see what the feeling is about making the swap from a pair of 3-500s to the almighty 8877. The donor is my very good condx Henry 2K Classic X which I do not; /archives//html/Amps/2009-01/msg00196.html (7,116 bytes)
2. Re: [Amps] 3-500zs to 8877 (score: 1): Author: Val Erwin <val.erwin@sbcglobal.net>; Date: Wed, 21 Jan 2009 07:23:44 -0800 (PST); Hi Donald: A good example of the change you would like to achieve is available by viewing the Ameritron series of amps. Specifically, compare the AL-82 (2 X 3-500s) to the AL-1500 (single 8877).(You; /archives//html/Amps/2009-01/msg00197.html (9,282 bytes)
3. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Wed, 21 Jan 2009 23:32:13 +0800; 3CX1500D7 is better, It use same socket as 3-500Z. Hsu -- Original Message -- From: "Val Erwin" <val.erwin@sbcglobal.net> To: <amps@contesting.com>; "Donald Fox" <taurusshoguy@yahoo.com> Sent: Wednes; /archives//html/Amps/2009-01/msg00198.html (10,531 bytes)
4. Re: [Amps] 3-500zs to 8877 (score: 1): Author: Robert Morris <robrk@nidhog.net>; Date: Wed, 21 Jan 2009 10:36:11 -0500; I'm of the "if it works, don't fix it crowd". No matter how good you are, you still messed with it. If you have the money for an 8877, start a project to build a complete amp, even single band to sta; /archives//html/Amps/2009-01/msg00199.html (8,937 bytes)
5. Re: [Amps] 3-500zs to 8877 (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Wed, 21 Jan 2009 15:48:33 +0000 (GMT); I'd echo this sentiment. You've got a good, tried and tested amp with robust tubes. Why spend the time and money (and run barefoot whilst you're working on it) simply for a lower drive requirement?; /archives//html/Amps/2009-01/msg00201.html (9,833 bytes)
6. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Wed, 21 Jan 2009 17:01:30 +0100; Both tubes need 5V filament voltage but th 3-500Z wants more current 73 Peter A good example of the change you would like to achieve is available by viewing the Ameritron series of amps. Specifically; /archives//html/Amps/2009-01/msg00202.html (7,709 bytes)
7. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Ken" <kenw2dtc@comcast.net>; Date: Wed, 21 Jan 2009 12:07:38 -0500; "Just submitting a quick poll to see what the feeling is about making the swap from a pair of 3-500s to the almighty 8877" I think a pair of 3-500Z's is more rugged and has more grid dissipation than; /archives//html/Amps/2009-01/msg00204.html (8,399 bytes)
8. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Wed, 21 Jan 2009 18:08:40 +0100; Hsu, you have probably thought about 3CX1200D7. That tube has the sane socket as 3-500Z. Nermin S58DX -- Original Message -- From: "Hsu" <hsu4qro@gmail.com> To: "Val Erwin" <val.erwin@sbcglobal.net>; /archives//html/Amps/2009-01/msg00205.html (12,627 bytes)
9. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Peter Frenning [OZ1PIF]" <peter@frenning.dk>; Date: Wed, 21 Jan 2009 18:10:39 +0100; Ken skrev: Not least important: The 3-500Z are instant-on (2-3 seconds will do nicely), the 8877 *must* have it's 180 seconds! When that rare DX is fading it feels like forever! -- Vy 73 de OZ1PIF/5Q; /archives//html/Amps/2009-01/msg00207.html (9,221 bytes)
10. Re: [Amps] 3-500zs to 8877 (score: 1): Author: <sccook1@cox.net>; Date: Wed, 21 Jan 2009 12:21:55 -0500; Pair of 3-500Z = $360 Single 8877 = $#@*^&! -S _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-01/msg00208.html (11,961 bytes)
11. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Thu, 22 Jan 2009 01:28:52 +0800; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2009-01/msg00209.html (13,121 bytes)
12. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Wed, 21 Jan 2009 09:34:50 -0800; Not only is the 3-500Z a more robust tube than the 8877, the 8877 requires a 3 minute warm-up, the circuit for that would be an added complexity. I agree with Hsu that the 3CX1200D7 would be a better; /archives//html/Amps/2009-01/msg00210.html (12,926 bytes)
13. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Tim Duffy K3LR" <k3lr@k3lr.com>; Date: Wed, 21 Jan 2009 11:51:04 -0600; Single 8877 pulls are readily available from several sources - great shape - They run for lots of years at 1500 watts with 40 to 50 watts of drive = about $300 Not too bad! 73, Tim K3LR Pair of 3-500; /archives//html/Amps/2009-01/msg00211.html (12,533 bytes)
14. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Wed, 21 Jan 2009 19:35:23 +0100; The table in the Eimac power grid tubes booklet shows the better figure for the 3-5ooZ. 73 Peter --Original Message-- From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On Behalf; /archives//html/Amps/2009-01/msg00213.html (13,411 bytes)
15. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 21 Jan 2009 15:38:10 -0500; 3CPX1500A7 full output pull is around $300. I still wouldnt make the change unless I had 4000-4200VDC under load available. In that case Id rather use a YC-156 pull for around the same price and neve; /archives//html/Amps/2009-01/msg00217.html (13,351 bytes)
16. Re: [Amps] 3-500zs to 8877 (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Wed, 21 Jan 2009 15:58:18 -0500; Welll... The Henry series runs fairly low voltage on its tubes, at least the 3-500s. Although I think the Henry consoles make a good base (pun not intended) for building a more powerful and rugged am; /archives//html/Amps/2009-01/msg00219.html (12,303 bytes)
17. [Amps] 3-500zs to 8877 (score: 1): Author: Donald Fox <taurusshoguy@yahoo.com>; Date: Wed, 21 Jan 2009 15:57:16 -0800 (PST); To start: Many thanks for all of the informative responses to date. I will try to answer them as best I can while remaining brief if possible. I have a pretty good understanding of most common low te; /archives//html/Amps/2009-01/msg00220.html (10,006 bytes)
18. Re: [Amps] 3-500zs to 8877 (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Wed, 21 Jan 2009 20:26:35 -0500; A bit, but it's just a time delay to prevent keying up before the warm up 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting; /archives//html/Amps/2009-01/msg00225.html (14,295 bytes)
19. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Phil Clements" <philc@texascellnet.com>; Date: Wed, 21 Jan 2009 21:11:53 -0600; It can be made as complex or simple as you desire. When coming in for a day/night of operating, switch on the amp and go draw a cup of coffee/807, and check the packet cluster spots. By that time, y; /archives//html/Amps/2009-01/msg00229.html (10,048 bytes)
20. Re: [Amps] 3-500zs to 8877 (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 21 Jan 2009 22:23:51 -0500; Using that original filament xfmr on an 8877 will raise the voltage so you will have to add a resistor to drop it. Carl KM1H _______________________________________________ Amps mailing list Amps@con; /archives//html/Amps/2009-01/msg00230.html (16,047 bytes)

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