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Total 20 documents matching your query.

1. [AMPS] re: 8877 (score: 1): Author: w5vx@hiline.net (Bill Parry); Date: Sat, 12 Dec 1998 08:11:43 -0600; I recently purchased a used 8877 from WA8WZG. I was very impressed with his honesty and he REALLY honors his guarantee. I have no interest in his business other than a very satisfied customer. If you; /archives//html/Amps/1998-12/msg00204.html (6,913 bytes)
2. [AMPS] Re: 8877 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Wed, 23 Jul 1997 21:06:52 EDT; So what do you consider low gain Rich? What is your example of a good AB2 grid driven triode? Please constrict yourself to under 2KW output tubes for now. I and others dont give a damn about tubes w; /archives//html/Amps/1997-07/msg00194.html (8,969 bytes)
3. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 23 Jul 97 19:15:00 -0700; ...snip... 3 in 7 out. (3cx3000F1/A1 in g-g) 810, 1000T, 450TL, et cetera--but not for linear service. The only tubes I know of that are usuable in grid-driven Class AB2 linear service are the 4CX600; /archives//html/Amps/1997-07/msg00197.html (9,072 bytes)
4. [AMPS] Re: 8877 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Thu, 24 Jul 1997 09:52:56 +0000; I've seen plenty of 811A's and 812A's. I've seen 100TL's and 100TH's also, right up to 450 TH's and TL's. My very first SSB PA was a pair of 812's grid driven by a homebrew 6L6 phasing exciter. I lat; /archives//html/Amps/1997-07/msg00201.html (9,756 bytes)
5. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 24 Jul 97 17:25:27 -0700; To: <amps@contesting.com> Yes indeed, and the total IMD level was probably -20db. The all-time record that I measured was -11db. I realize this. . ...snip... Grid-driven is perfectly okay for a medi; /archives//html/Amps/1997-07/msg00206.html (9,783 bytes)
6. [AMPS] Re: 8877 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Fri, 25 Jul 1997 08:37:55 +0000; To: <amps@contesting.com> Of course youn forgot to mention when the tube is neutralized, the anode grid capacitance effectively goes to zero. Interesting you know the IMD level of amps from the 60's; /archives//html/Amps/1997-07/msg00209.html (10,044 bytes)
7. [AMPS] Re: 8877 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Fri, 25 Jul 1997 10:13:39 EDT; Back before the modern triodes became available some of the most popular AB2 grid driven triodes were the 304TL, 450TL and 6C21. Of course these were the old PP design with plug-in coils, cross neutr; /archives//html/Amps/1997-07/msg00212.html (10,657 bytes)
8. [AMPS] Re: 8877 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Fri, 25 Jul 1997 14:52:08 EDT; To: <amps@contesting.com> How can you demand others to supply absolute values one minute and then say "probably" the next Rich? The worst I can remember was the Swan 700 at -15 and the WRL 2000A at -; /archives//html/Amps/1997-07/msg00215.html (11,283 bytes)
9. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 25 Jul 97 21:42:03 -0700; ...snip... How much screen V? How much grid current? How did you regulate the grid bias V? - Did you measure the IMD yourself, or did you accept on the air reports? It depends on how much grid curre; /archives//html/Amps/1997-07/msg00222.html (9,181 bytes)
10. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 25 Jul 97 21:42:13 -0700; To: <amps@contesting.com> To: <amps@contesting.com> Good point, Mr. Rauch. Nevertheless 1000v of grid drive across a 100pF grid takes a bit of doing. I measured the total IMD of the 8171 Class AB1 a; /archives//html/Amps/1997-07/msg00224.html (9,792 bytes)
11. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 26 Jul 97 07:39:48 -0700; To: <amps@contesting.com> ...snip... Demand? -13 is awesome for a commercial machine. . ...snip... I don't think so. The 3cx3000A7 is not recommended for grid-driven linear amplifier service. Cathod; /archives//html/Amps/1997-07/msg00229.html (9,742 bytes)
12. [AMPS] Re: 8877 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Sat, 26 Jul 1997 11:59:34 EDT; 500V when the Ep was down in the 4500V range. Up to 750 at 6KV. How much grid current? That was 30 yrs ago, I dont remember all the details. It was in the wiggle range on SSB peaks. How did you regul; /archives//html/Amps/1997-07/msg00232.html (10,504 bytes)
13. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 26 Jul 97 11:20:23 -0700; 6kV to 7kV is good for SSB operation. 750V on the screen would result in an anode current of about 460 mA without paying an IMD penalty of driving the grid positive and drawing grid current. Raise t; /archives//html/Amps/1997-07/msg00237.html (11,202 bytes)
14. [AMPS] Re: 8877 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Sat, 26 Jul 1997 18:02:57 EDT; Good try Rich but no soap. No typo here or anywhere else. The catalog very plainly has line entries for Cathode Driven AB2 and then 2 more entries for grid driven...one RF and the other AF; both AB2.; /archives//html/Amps/1997-07/msg00238.html (10,116 bytes)
15. [AMPS] Re: 8877 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Sat, 26 Jul 1997 21:55:43 +0000; To: <amps@contesting.com> Rich, I have to question your motives. People ask for help, and you go on and on with home made non-sense. Take, for example, the poor guy who asked about an ALC system que; /archives//html/Amps/1997-07/msg00240.html (10,597 bytes)
16. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 26 Jul 97 21:54:56 -0700; Us? Who do you represent besides yourself? - My idea of reality is what's in the characteristic curves on the technical specifications sheets. Quick Reference Catalog 175 agrees with the specificati; /archives//html/Amps/1997-07/msg00243.html (9,610 bytes)
17. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 27 Jul 97 00:54:03 -0700; To: <amps@contesting.com> ...snip... My position is not helpful to those who believe that they (alone) can use any tube in any class of operation and produce useful linear amplification. If you beli; /archives//html/Amps/1997-07/msg00245.html (8,195 bytes)
18. [AMPS] Re: 8877 (score: 1): Author: w8jitom@postoffice.worldnet.att.net (w8jitom@postoffice.worldnet.att.net); Date: Sun, 27 Jul 1997 12:53:17 +0000; To: <amps@contesting.com> Only Rich Measures is allowed to do that! 73, Tom W8JI -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-R; /archives//html/Amps/1997-07/msg00246.html (8,459 bytes)
19. [AMPS] Re: 8877 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sun, 27 Jul 97 11:14:04 -0700; To: <amps@contesting.com> Zzzzzz. Zzzzzzzzzz. Zzzz. R. L. Measures, 805-386-3734, AG6K -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests:; /archives//html/Amps/1997-07/msg00250.html (8,023 bytes)
20. [AMPS] Re: 8877 (score: 1): Author: km1h@juno.com (km1h @ juno.com); Date: Sun, 27 Jul 1997 17:19:04 EDT; I represent Me, Myself and I Rich. Now I might ask you the same thing since you assume yourself to be the only person in the world with access to Eimac literature. Would you like me to FAX it to you; /archives//html/Amps/1997-07/msg00251.html (9,629 bytes)

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