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1. [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Frank N. Haas" <headrat@rats-computers.com>; Date: Tue, 27 Sep 2005 05:58:29 +0000; Greetings Amp'ers: Today I fulfilled a long time dream. I now own a real Alpha HF power amplifier. A ham within 1 hour driving time recently offered his Alpha 78 for sale at a price I could afford. W; /archives//html/Amps/2005-09/msg00329.html (7,954 bytes)
2. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Tue, 27 Sep 2005 07:04:52 -0700; http://www.dellroy.com/W4EF's-Ham-Radio-Page/Alpha78/Alpha78.htm 73 de Mike, W4EF........................ _______________________________________________ Amps mailing list Amps@contesting.com http://; /archives//html/Amps/2005-09/msg00330.html (7,245 bytes)
3. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: R.Measures <r@somis.org>; Date: Tue, 27 Sep 2005 08:20:02 -0700; Unless Harbach electronics has added more L to its 3-500Z suppressor inductor, a what, me worry position may not be appropriate since VHF-Q could be lower. . The lowest resonance in the 50uH HV RFC i; /archives//html/Amps/2005-09/msg00331.html (8,084 bytes)
4. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Bob Maser" <bmaser@tampabay.rr.com>; Date: Tue, 27 Sep 2005 12:09:14 -0400; Congrats on the Alpha 78. A word to the wise, keep the grid current under 50ma and run the amp very conservatively because the 8874's are very expensive to replace. My 78 (serial # 8271)puts out 1200; /archives//html/Amps/2005-09/msg00332.html (10,250 bytes)
5. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Kenneth D. Grimm, K4XL" <kgrimm@adelphia.net>; Date: Tue, 27 Sep 2005 13:19:07 -0400; Are you saying that the plate choke isn't going to fail if the amp is loaded up on 24 MHz? Shouldn't one heed the warning given on the Alpha Radio Products web site which says: "The ALPHA PA-77, 77Dx; /archives//html/Amps/2005-09/msg00334.html (8,261 bytes)
6. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "John- W4DJ" <w4dj@hotmail.com>; Date: Tue, 27 Sep 2005 14:09:09 -0400; DO NOT use those Alpha Amps outlined at the bottom of this page on 24MHZ. I have seen first hand the damage it can do and have repaired damage from just that situation. 73s de John W4DJ _____________; /archives//html/Amps/2005-09/msg00335.html (9,760 bytes)
7. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 27 Sep 2005 16:19:12 -0400; Kenneth and others, I'm not for sure on this but I think Rich was refering to the SB-220 plate choke. I almost got it confused myself whether he was speaking of the Alpha or the Heath. One can test t; /archives//html/Amps/2005-09/msg00337.html (9,636 bytes)
8. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Tue, 27 Sep 2005 15:33:55 -0700; I strongly agree, John. I measured the choke impedance of the Alpha 78 with the choke installed in the amplifier and it definitely has a series resonance around 25 MHz. Load up on 12 meters at your o; /archives//html/Amps/2005-09/msg00338.html (8,784 bytes)
9. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: W0UN -- John Brosnahan <shr@swtexas.net>; Date: Tue, 27 Sep 2005 17:38:18 -0500; It will DEFINITELY blow up. John W0UN -- former president of Alpha/Power _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/lis; /archives//html/Amps/2005-09/msg00339.html (7,941 bytes)
10. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: "Joe Subich, W4TV" <k4ik@subich.com>; Date: Tue, 27 Sep 2005 18:54:54 -0400; Absolutely WRONG!!!! The Alpha amplifiers in the 76, 78, 374, etc series were intentionally designed with a choke resonance around 25 MHz to prevent their use on 27 MHz. This information comes direct; /archives//html/Amps/2005-09/msg00340.html (8,199 bytes)
11. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 28 Sep 2005 02:59:24 -0700; Wrong model amplifier, sorry. Alzheimers? Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con; /archives//html/Amps/2005-09/msg00349.html (9,747 bytes)
12. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 28 Sep 2005 05:37:56 -0700; correct Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-09/msg00352.html (8,885 bytes)
13. Re: [Amps] Suggestions for new Alpha Owner? (score: 1): Author: Bob Nielsen <nielsen@oz.net>; Date: Wed, 28 Sep 2005 09:47:16 -0700; I don't have an Alpha, but it would seem to be feasible to construct a replacement plate choke with a series resonance above 30 MHz, permitting use of the amplifier on 12 (and hopefully 10) meters. O; /archives//html/Amps/2005-09/msg00353.html (8,294 bytes)

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