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1. Re: [Amps] Hi Mu correction (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Tue, 18 Jul 2006 23:55:06 -0400; I'm still a little confused here. I thought that a higher mu tube (higher gain) would require more bias to hold it to a specific current (idle?) and that a lower mu tube (lower gain) would require le; /archives//html/Amps/2006-07/msg00613.html (6,883 bytes)
2. Re: [Amps] Hi Mu correction (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 19 Jul 2006 17:51:46 -0400; Thanks Bill, I think that is the best explanation I have seen. 73, Tony W4ZT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/; /archives//html/Amps/2006-07/msg00649.html (9,149 bytes)
3. Re: [Amps] font sizes (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Fri, 21 Jul 2006 10:48:59 -0400; I just configure Thunderbird to display plain text and send plain text.. Default display configures what I look at and it's the same for everyone. That's using technology against itself ;) 73, Tony W; /archives//html/Amps/2006-07/msg00769.html (7,451 bytes)
4. Re: [Amps] Grid fuses (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Fri, 21 Jul 2006 14:40:01 -0400; No. The bias is normally derived from the voltage drop across a bias circuit (a zener diode(s), a string of silicon diodes or an adjustable bias circuit) in the cathode current path. When you remove; /archives//html/Amps/2006-07/msg00790.html (11,742 bytes)
5. Re: [Amps] Grid fuses (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Fri, 21 Jul 2006 15:08:39 -0400; Only one... kill the HV with either a proper HV fuse and/or trip the HV supply off line. For the same reason you can't depend on a blown resistor to stop the arc, you can't depend on a low voltage fu; /archives//html/Amps/2006-07/msg00793.html (11,582 bytes)
6. Re: [Amps] salvaging shorted tubes (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Fri, 21 Jul 2006 19:56:52 -0400; I watched a friend of mine attempt to rejuvenate a few 3-500's. He used a Variac (fused) and applied the output between the grid and filament with filament voltage applied. There were some intermitte; /archives//html/Amps/2006-07/msg00815.html (9,412 bytes)
7. Re: [Amps] AL811, AL811H or AL572 mods to 6m (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 02 Aug 2006 18:04:18 -0400; Both of those amps are good candidates for retrofit with GI-7B tubes. Use a single GI-7B where there are two 811's or 572B's or two GI-7B's where there are 4 811's or 572B's. You'll have lower capaci; /archives//html/Amps/2006-08/msg00055.html (9,685 bytes)
8. Re: [Amps] GS-35B on 6 meters (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Fri, 04 Aug 2006 19:03:23 -0400; Larry, Most of the guys I have talked with about the GS-35B on six meters have said the same thing that Lou did. You should expect no more than the published gain of 13 dB in any case. Most using the; /archives//html/Amps/2006-08/msg00152.html (8,050 bytes)
9. Re: [Amps] GS-35B on 6M (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Sat, 05 Aug 2006 02:06:41 -0400; Arne is correct about the anode cooler being large. It is close to 100 mm (about 4") at the largest point near the bottom of the cooler. The majority of the cooler is above that point and is made up; /archives//html/Amps/2006-08/msg00170.html (8,910 bytes)
10. Re: [Amps] GS-35B on 6 meters (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Sun, 06 Aug 2006 15:41:04 -0400; Actually it would be impossible to put a lug between the cooler and the anode of the GS-35B. The cooler has a precision machined taper that fits the top SIDES of the anode. There is no physical conne; /archives//html/Amps/2006-08/msg00226.html (9,831 bytes)
11. [Amps] Tuned Input - IMD and efficiency (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Tue, 08 Aug 2006 09:47:03 -0400; Friends, There are plenty of claims that it is wise to use tuned input circuits on Grounded Grid amps and that the reasons are reduced IMD, better efficiency and better matching to modern day exciter; /archives//html/Amps/2006-08/msg00287.html (10,113 bytes)
12. Re: [Amps] Spam from Members of this List ... (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 01:16:20 -0400; Regarding SPAM to people on this list... I have received and continue to receive SPAM to the email address (past and present) that I use exclusively on this list. The email is NOT coming from any add; /archives//html/Amps/2006-08/msg00318.html (11,100 bytes)
13. Re: [Amps] Tuned Input - IMD and efficiency (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 01:34:04 -0400; A friend of mine sent me this quote from the 20th Edition of Editors and Engineers: ** Page 21.15 Distortion Products "Laboratory measurements made on various tubes in the circuit of figure 10A show; /archives//html/Amps/2006-08/msg00320.html (14,343 bytes)
14. Re: [Amps] Spam from Members of this List ... (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 01:48:23 -0400; Hi John, Hotmail used to be well known for releasing all their email addresses to the wild. I don't know how they are today. I have managed to keep quite a few email addresses completely hidden from; /archives//html/Amps/2006-08/msg00322.html (14,384 bytes)
15. Re: [Amps] Tuned Input - IMD and efficiency (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 11:06:27 -0400; I personally would appreciate it if those that choose to turn every thread into a discussion of parasites and methods of preventing them would start a new thread instead of hijacking someone else's t; /archives//html/Amps/2006-08/msg00338.html (9,370 bytes)
16. Re: [Amps] Spam from Members of this List ... (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 11:09:45 -0400; Mike, This is not a Yahoo mail group. It is hosted by Contesting dot Com. 73, Tony W4ZT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.c; /archives//html/Amps/2006-08/msg00339.html (12,462 bytes)
17. Re: [Amps] crying abt spam (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 13:09:49 -0400; Hello John, yes it does Unless we are charged to participate in this I respectfully disagree with you about this. Most of those that participate in this list do so without an expectation of spammers; /archives//html/Amps/2006-08/msg00349.html (11,413 bytes)
18. Re: [Amps] crying abt spam (score: 1): Author: Tony King - W4ZT <amps071806@w4zt.com>; Date: Wed, 09 Aug 2006 17:05:49 -0400; Gosh Keith, Do you think that just because you get tons of SPAM that everyone else should or if they do they should just sit back and take it? Do you think that we should make no effort to eliminate; /archives//html/Amps/2006-08/msg00363.html (13,816 bytes)

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