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1. [Amps] Gi-7b (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Mon, 26 Jun 2006 21:09:49 -0500; Good Evening All: I found this group while searching for information on the Gi-7b Russian tubes. So, here is the question. Has anyone used the Gi-7b in an amplifier? I am in the process of building a; /archives//html/Amps/2006-06/msg00484.html (7,236 bytes)
2. Re: [Amps] Gi-7b (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Mon, 26 Jun 2006 21:41:18 -0500; Thanks Tony. Great info. I guess if I can get 800 watts output on 6 meters I will be happy. Anything over that will be a bonus. I'm doing a running history of the project with my digital camera. I wi; /archives//html/Amps/2006-06/msg00486.html (8,729 bytes)
3. [Amps] Plate Load (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sat, 1 Jul 2006 15:07:01 -0500; Good Afternoon All: While we are exercising all of this grey matter on IMD etc, please allow me to ask a similar question. If the calculated Plate load Impedence is 1333 ohms, and the tank circuit lo; /archives//html/Amps/2006-07/msg00027.html (7,148 bytes)
4. Re: [Amps] Plate Load (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sat, 1 Jul 2006 15:21:38 -0500; Ok, then what happens if the tank circuit is designed to match the Plate impedence? _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m; /archives//html/Amps/2006-07/msg00028.html (7,796 bytes)
5. Re: [Amps] Plate Load (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sat, 1 Jul 2006 15:45:51 -0500; Tom, please let me rephrase that. I assume from your previous answer that if the tank circuit is designed to match the load impedence, then linearity will improve. What, then, happens to efficiency?; /archives//html/Amps/2006-07/msg00029.html (8,819 bytes)
6. [Amps] Again (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sun, 2 Jul 2006 06:30:57 -0500; There clearly are individuals on this reflector who are more knowledgeable than me, so I will ask this question again, but in a differently worded form. How does the impedance of the PA tank affect t; /archives//html/Amps/2006-07/msg00042.html (6,812 bytes)
7. Re: [Amps] again (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sun, 2 Jul 2006 10:22:29 -0500; Roy, I agree. This came up because I found a schematic for a pair of Gi-7b's and was kinda using it as a guide. Meanwhile back at the ranch, I looked up the formulas for calculating the values in a p; /archives//html/Amps/2006-07/msg00054.html (9,248 bytes)
8. [Amps] Pi network tuning (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sun, 23 Jul 2006 20:38:40 -0500; Good Evening All: Please try this question on for size. With the pi-network built, and the tubes in the sockets and AC coupled to the pi-network, is it possible to determine that the pi-network value; /archives//html/Amps/2006-07/msg00979.html (6,556 bytes)
9. Re: [Amps] Pi network tuning (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sun, 23 Jul 2006 21:33:55 -0500; Thanks Tom. The next question is; Does it matter which side of the blocking capacitor I attach the termination to ground. This is a 50 mHz amp, and to attach to the anodes would mean long leads. If I; /archives//html/Amps/2006-07/msg00982.html (8,227 bytes)
10. Re: [Amps] Pi network tuning (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Mon, 24 Jul 2006 06:54:09 -0500; Good Morning: The tubes are Gi-7b's. (output capacitance = 4.6 pf/tube) The grids are tied hard to the chassis. I cut holes in the chassis just big enough for the grids to fit through, and then made; /archives//html/Amps/2006-07/msg01006.html (10,588 bytes)
11. Re: [Amps] Pi network tuning (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Mon, 24 Jul 2006 19:23:49 -0500; Thanks to all who responded. I will try to do the testing and see what happens. However, probably not tonight. This afternoon we got something called rain, and I need to try to figure out what it is.; /archives//html/Amps/2006-07/msg01049.html (8,339 bytes)
12. Re: [Amps] Heathkit HA10 linear (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Sat, 5 Aug 2006 04:17:47 -0500; Good Morning Tom" I am running a HA-10 and driving it with a FT-1000MP. I run 2KV on the plates. Output varies from band to band, but on average it runs in the 700 watt range. I do nothing special in; /archives//html/Amps/2006-08/msg00175.html (9,003 bytes)
13. [Amps] Fw: grid resonance (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Tue, 8 Aug 2006 13:04:43 -0500; I'm wondering if this horse still flinches when someone kicks it. 73, Mike, W5UC http://members.cox.net/w5uc -- Original Message -- From: "Bill Turner" <dezrat@copper.net> To: "Joe Subich, W4TV" <w4t; /archives//html/Amps/2006-08/msg00303.html (7,683 bytes)
14. Re: [Amps] FW: RSOE (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 07:42:12 -0500; I'm sorry gang, but I am struggling to understand what this has to do with Amplifiers or Contesting. 73, Mike, W5UC http://members.cox.net/w5uc _______________________________________________ Amps ma; /archives//html/Amps/2006-08/msg00331.html (7,889 bytes)
15. Re: [Amps] Spam from Members of this List ... (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 09:47:50 -0500; Steve, I just went to the Yahoo Preferences page and found no such setting. I believe that is a function of the way the reflector sends the messages out. This is not likely to change as it is probabl; /archives//html/Amps/2006-08/msg00336.html (10,652 bytes)
16. Re: [Amps] Spam from Members of this List ... (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 10:18:28 -0500; Thanks Tony: HMMMM, that even makes it more difficult because I don't have the foggiest idea where to go to establish preferences. If I went there is it possible to make those choices. I will go look; /archives//html/Amps/2006-08/msg00340.html (13,406 bytes)
17. Re: [Amps] Spam from Members of this List ... (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 10:33:34 -0500; Randall: I went to the sign-up page, and there appears to be no way to make a choice about what is placed in the header. No surprise there. It still appears that those who manage this reflector may n; /archives//html/Amps/2006-08/msg00341.html (13,264 bytes)
18. Re: [Amps] Spam from Members of this List ... (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 11:13:01 -0500; Yes, I realized my error with regard to Yahoo. However, the problem being discussed in not about receiving duplicate messages from the reflector, but that of receiving a message from the reflector an; /archives//html/Amps/2006-08/msg00347.html (13,350 bytes)
19. Re: [Amps] Fw: grid resonance (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 12:42:40 -0500; Which horse? The discussion horse or the whining about the discussion horse? -- REPLY SEPARATOR -- None of the above. When the discussion goes to the very lengthy point of being strictly academic, wi; /archives//html/Amps/2006-08/msg00354.html (7,826 bytes)
20. Re: [Amps] Fw: grid resonance (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Wed, 9 Aug 2006 13:17:17 -0500; I don't remember anyone planning or attempting to MAKE anyone else stop doing anything. Rude is when you complain about my voicing the fact that IMO the discussion has reached it's useful limit. At t; /archives//html/Amps/2006-08/msg00357.html (9,261 bytes)

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