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1. [AMPS] AL1500 (score: 1): Author: alex@sandlabs.com (alex); Date: Mon, 3 Dec 2001 04:45:48 -0500; A friend of mine, an F3... , (has no internet access) wants to know: Does anyone know what the AL1500 is _really_ capable and under what conditions? I have no experience with it, so perhaps somebody; /archives//html/Amps/2001-12/msg00041.html (6,756 bytes)
2. [AMPS] AL1500 (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 3 Dec 2001 13:42:46 -0800; Is that a French ham or a Function key? <yuck> [Steve Katz] The AL1500 runs a lot of power. Not so much for people using "tetrodes with handles," but more than the amateur legal limit, for sure. Had; /archives//html/Amps/2001-12/msg00042.html (8,516 bytes)
3. [AMPS] AL1500 (score: 1): Author: 2@vc.net (2); Date: Mon, 3 Dec 2001 15:31:07 -0800; // The AL-1500 is seemingly capable of VHF or UHF parasitic oscillation. The AL-1500 is - to my knowledge - the only commercially manufactured 8877 HF amplifier that does not use a parasitic suppres; /archives//html/Amps/2001-12/msg00043.html (8,105 bytes)
4. [AMPS] AL1500 (score: 1): Author: alex@sandlabs.com (alex); Date: Mon, 3 Dec 2001 07:29:23 -0500; Hmmmm... That does not seem to answer my friends question ... However, the parasitic oscillations should be taken care by the grid current measuring system that will shut down the amp if excessive gr; /archives//html/Amps/2001-12/msg00048.html (9,593 bytes)
5. [AMPS] AL1500 (score: 1): Author: alex@sandlabs.com (alex); Date: Mon, 3 Dec 2001 07:32:03 -0500; This is interesting... The tube, I understand, can deliver safely only 1500W. How do you get so much more... And how about cooling... Is the internal blower enough at these power levels ? Alex, N2NNU; /archives//html/Amps/2001-12/msg00049.html (9,643 bytes)
6. [AMPS] AL1500 (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Mon, 3 Dec 2001 16:43:06 -0800; Where did you get the idea that an 8877 can "deliver safety only 1500W?" It's a 1500W rated _dissipation_ triode. Normally, one can achieve about 2x the plate dissipation rating of any transmitting t; /archives//html/Amps/2001-12/msg00050.html (12,352 bytes)
7. [AMPS] AL1500 (score: 1): Author: paulc@mediaone.net (Paul Christensen); Date: Mon, 3 Dec 2001 19:59:21 -0500; Class of operation is contingent parameter. In Class B or C service for FM broadcast, this tube can typically deliver 2600 watts (See http://www.eimac.com/catalog/168423.htm ). During my college days; /archives//html/Amps/2001-12/msg00051.html (11,801 bytes)
8. [AMPS] AL1500 (score: 1): Author: doug@nc.rr.com (Doug Hall); Date: Mon, 03 Dec 2001 20:16:38 -0500; The ITT Mackay Marine MRU-60 was a shipboard transmitter manufactured in the 1980s. It contained a 100 mW solid state exciter, a broadband 100w solid state driver, and an 8877 PA. As I recall it cove; /archives//html/Amps/2001-12/msg00052.html (8,618 bytes)
9. [AMPS] AL1500 (score: 1): Author: alex@sandlabs.com (alex); Date: Mon, 3 Dec 2001 08:22:14 -0500; I got the idea from a very special place :) The tube's Data Sheet that recommends a specific set of operational parameters for SSB AB Class. The output is set at 1500W under these conditions. It some; /archives//html/Amps/2001-12/msg00053.html (14,163 bytes)
10. [AMPS] AL1500 (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Mon, 3 Dec 2001 20:43:42 -0500; Alex, Quite simply, you received the "FCC version" of the spec sheet! The 8877/3CX1500A7 and 3CX800A7 were first being sampled to the amateur amplifier manufacturers about the same time as the FCC wa; /archives//html/Amps/2001-12/msg00055.html (9,386 bytes)
11. [AMPS] AL1500 (score: 1): Author: wd7s@att.net (PAUL HEWITT); Date: Mon, 3 Dec 2001 16:59:50 -0600; No disrespect intended but the 8877 will also operate at less than 1500 watts. Typical operating parameters are just that, not rules, stay within the maximum values and everything is fine. Paul PAUL; /archives//html/Amps/2001-12/msg00056.html (10,154 bytes)
12. [AMPS] AL1500 (score: 1): Author: alex@sandlabs.com (alex); Date: Mon, 3 Dec 2001 09:40:57 -0500; I guess we got of track! The initial question was about the AL1500 and not the tube. I still do not know what the Amp can _really_ do and how! Alex, N2NNU -- FAQ on WWW: http://www.contesting.com/FAQ; /archives//html/Amps/2001-12/msg00057.html (8,382 bytes)
13. [AMPS] AL1500 (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 3 Dec 2001 20:54:38 -0600; It can do 2250 + watts. For how long depends upon the mode. The weakest area in this amp is the tank circuit. Several RTTY operators have reported a melt-down of the tank coil on the low bands, due; /archives//html/Amps/2001-12/msg00058.html (8,888 bytes)
14. [AMPS] AL1500 (score: 1): Author: alex@sandlabs.com (alex); Date: Mon, 3 Dec 2001 10:01:43 -0500; OK... Thanks... Now, are there any mods that must be made or it will do this out of the box ? Alex, N2NNU not a the -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com; /archives//html/Amps/2001-12/msg00059.html (9,876 bytes)
15. [AMPS] AL1500 (score: 1): Author: jflanders2@home.com (Jerry Flanders); Date: Mon, 03 Dec 2001 22:23:08 -0500; Did you read the manufacturer's specs on it? Lots of info there - how long at what power level for continuous carrier, for instance. http://www.ameritron.com/ameritron/products.php?prodid=AL-1500 Jer; /archives//html/Amps/2001-12/msg00060.html (8,975 bytes)
16. [AMPS] AL1500 (score: 1): Author: 2@vc.net (2); Date: Mon, 3 Dec 2001 21:43:30 -0800; // As I understand it, the grid-protect circuit does not prevent gold-sputtering, a major cause of 8877 fatality. - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http; /archives//html/Amps/2001-12/msg00063.html (8,756 bytes)
17. [AMPS] AL1500 (score: 1): Author: 2@vc.net (2); Date: Mon, 3 Dec 2001 21:43:35 -0800; What kind of noise? Tnx, Doug - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative reque; /archives//html/Amps/2001-12/msg00064.html (8,988 bytes)
18. [AMPS] AL1500 (score: 1): Author: doug@nc.rr.com (Doug Hall); Date: Tue, 04 Dec 2001 00:53:12 -0500; Well, let's see... it made a big CLUNK when the contactors kicked in, then the high pitched whine of the exciter/driver fans could be heard, followed by the sound of the blower in the PA coming up t; /archives//html/Amps/2001-12/msg00066.html (8,917 bytes)
19. [AMPS] AL1500 (score: 1): Author: 2@vc.net (2); Date: Tue, 4 Dec 2001 06:23:09 -0800; For some seemingly esoteric reason, 8877s and other tubes with a gold-plated, molybdenum grid make little noise when they sustain a parasitic. Sometimes an arc can be heard just before the electric; /archives//html/Amps/2001-12/msg00071.html (9,691 bytes)
20. [AMPS] AL1500 (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Tue, 4 Dec 2001 07:36:46 -0800; Were there "known bad runs" or lots of 8877s? Sounds like maybe there were. I've used them for many years and never had one fail, usually obtaining "pulls" from plasma RF generators or metal sputteri; /archives//html/Amps/2001-12/msg00073.html (9,717 bytes)

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