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Total 14 documents matching your query.

1. Re: [Amps] New Amps at Dayton (score: 1): Author: Dennis W0JX <w0jx@yahoo.com>; Date: Tue, 20 May 2008 06:42:10 -0700 (PDT); The only thing that I saw at Dayton worth noting is a change in the current Alpha 8100. The finals have been replaced with TWO 4CX1000A's instead of the 4CX800A7's and the amp has been relabeled eith; /archives//html/Amps/2008-05/msg00126.html (6,816 bytes)
2. Re: [Amps] New Amps at Dayton (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Tue, 20 May 2008 10:23:27 -0400; The new Alpha amp that runs a pair of 4CX1000A's is the 8410. This amp uses a 3.6KVA plate transformer. Also at Dayton Emtron introduced their new DX2B which also uses the 4CX1000A. They are in the p; /archives//html/Amps/2008-05/msg00127.html (8,820 bytes)
3. Re: [Amps] New Amps at Dayton (score: 1): Author: Lee Buller <k0wa@swbell.net>; Date: Tue, 20 May 2008 07:35:20 -0700 (PDT); The amps looked very nice.... Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any; /archives//html/Amps/2008-05/msg00128.html (7,585 bytes)
4. Re: [Amps] New Amps at Dayton (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 20 May 2008 11:06:52 -0400; Ive heard that the 4CX1000's will be the Penta brand, made in China. I use a lot of Penta tubes for customer repairs and 6M conversions and Im very impressed with the quality and consistency. How com; /archives//html/Amps/2008-05/msg00130.html (10,117 bytes)
5. Re: [Amps] New Amps at Dayton (score: 1): Author: Lee Buller <k0wa@swbell.net>; Date: Tue, 20 May 2008 09:04:19 -0700 (PDT); Why have the Russians stopped producing tubes? From what I can gather from some people and sources is that Russia is in a state of economic chaos and making tubes is not something they have focused o; /archives//html/Amps/2008-05/msg00131.html (7,596 bytes)
6. [Amps] New Amps at Dayton (score: 1): Author: "brohde" <brohde@cox.net>; Date: Tue, 20 May 2008 11:54:41 -0400; I spoke at length with Rudi from Emtron. The new DX-2B utilizes a single 4CX1500B, which has good supply from Chinese sources. He is preparing to also include 6 meters into the new DX-2B, which shoul; /archives//html/Amps/2008-05/msg00135.html (7,450 bytes)
7. Re: [Amps] New Amps at Dayton (score: 1): Author: "Roger (K8RI)" <sub1@rogerhalstead.com>; Date: Tue, 20 May 2008 18:03:08 -0400; The same 4CX-1000A used in the 30-S1? The one with zero grid dissipation? That's the tube I've always said I'd never use in anything because it's so fragile or have I missed something? Isn't that qui; /archives//html/Amps/2008-05/msg00137.html (10,435 bytes)
8. Re: [Amps] New Amps at Dayton (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Wed, 21 May 2008 01:03:57 +0200; Zero grid dissipation is no problem. No grid current, no dissipation. The Chinese 3CX1500A7 seem to be very reliable. A company nearby uses 200 of them for about two years and so far no tube failure.; /archives//html/Amps/2008-05/msg00139.html (11,821 bytes)
9. Re: [Amps] New Amps at Dayton (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Tue, 20 May 2008 19:13:57 -0400; The same socket is used for the 4CX1000A and the 4CX1500B(p/n SK800B). The 4CX1500A uses a different socket(SK831). Increasing the screen voltage does wonders for output. That is how owners of the 30; /archives//html/Amps/2008-05/msg00140.html (12,243 bytes)
10. Re: [Amps] New Amps at Dayton (score: 1): Author: "Roger (K8RI)" <sub1@rogerhalstead.com>; Date: Tue, 20 May 2008 19:29:52 -0400; That makes sense. The ones I had must have been the A version as they used a conventional type socket. It's been almost 20 years which is a good memory test. Now if we could still get the 4CX1600B wh; /archives//html/Amps/2008-05/msg00141.html (9,395 bytes)
11. Re: [Amps] New Amps at Dayton (score: 1): Author: "Chuck & Vicki Tifft" <cftifft@sbcglobal.net>; Date: Tue, 20 May 2008 16:39:27 -0700; No, I don't think so. I homebrewed one about 30 yars ago.Back then free pulls were easy to come by from one of the other local high VHF channels.(we were low VHF and didn't use them) Was a great amp/; /archives//html/Amps/2008-05/msg00143.html (14,004 bytes)
12. Re: [Amps] New Amps at Dayton (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Tue, 20 May 2008 20:34:52 -0400; BTW, Alpha is producing their own sockets for the 4CX1000A. They did a really good job. They had one sitting on display. It looked better than the Eimac version. Bob -- Original Message -- From: "Rog; /archives//html/Amps/2008-05/msg00144.html (12,381 bytes)
13. Re: [Amps] New Amps at Dayton (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 20 May 2008 20:35:12 -0400; I would hope that the Russians or Chinese have a less complicated socket. It doesnt take much to work fine at HF. A rather scarce tube is the 3CX1000A7. It basically has the filament and grid ratings; /archives//html/Amps/2008-05/msg00145.html (16,124 bytes)
14. Re: [Amps] New Amps at Dayton (score: 1): Author: "Chuck & Vicki Tifft" <cftifft@sbcglobal.net>; Date: Tue, 20 May 2008 21:08:25 -0700; Yep, nice tube.was used in the original Alpha 70...You are blessed to have some, because they are VERY hard to come by indeed..!! I wish I had a couple, but not for what they bring now days.. W6RD --; /archives//html/Amps/2008-05/msg00147.html (17,979 bytes)

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