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1. [Amps] Passive grid: How to calculate..... ? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Fri, 22 Nov 2002 10:52:35 -0500 (EST); Greetings, Stupid question of the month...... How do I calculate the driving VOLTAGE requirements of a tube or tubes in a passive grid configuration in the absense of a datasheet specifiying same? Ex; /archives//html/Amps/2002-11/msg00340.html (7,896 bytes)
2. [Amps] Passive grid: How to calculate..... ? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Fri, 22 Nov 2002 11:13:00 -0500 (EST); Maybe I have the math wrong.... E=sqrt(P*R) so P == 100 R == 50 then E = 70.7106 or approx 100V Peak Or am I wayyyyyyyyyyyyyy off? -- Microsoft is NOT the answer Microsoft is the question and the ans; /archives//html/Amps/2002-11/msg00342.html (8,731 bytes)
3. [Amps] Passive grid: How to calculate..... ? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Fri, 22 Nov 2002 12:15:54 -0500 (EST); Thanks guys! This was clearly too obvious. Now I feel really stupid!!! ( AD5GB dons the pointy hat..... steps away from the amplifier ) -- Microsoft is NOT the answer Microsoft is the question and th; /archives//html/Amps/2002-11/msg00346.html (11,234 bytes)
4. [Amps] Transformer ID help???? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Tue, 26 Nov 2002 23:41:21 -0500 (EST); Greetings, I was just given a large (plate??) transformer and a smaller (filament??) transformer, both in Heathkit boxes. Wondering if someone can help me identify them and their connection(s). One's; /archives//html/Amps/2002-11/msg00377.html (6,775 bytes)
5. [Amps] FS AL-1500 (never used) (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Wed, 27 Nov 2002 01:40:17 -0500 (EST); Greetings, I have a friend who just picked up a bunch of stuff from an OM getting out of the hobby. One of the items is an AL-1500 that's never been assembled. (tube, xfmr, and amp still in separate; /archives//html/Amps/2002-11/msg00379.html (6,589 bytes)
6. [Amps] FS: Drake L4 (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Wed, 27 Nov 2002 13:51:10 -0500 (EST); Greetings, Just found out my friend who's selling the Ameritron AL-1500 also wishes to sell his L4. He asked me to post that one here as well. Asking is $650. Interested persons can contact him at w5; /archives//html/Amps/2002-11/msg00381.html (6,576 bytes)
7. [Amps] Passive grid resistor ?? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Thu, 28 Nov 2002 03:31:03 -0500 (EST); Greetings, I've searched some of the reflector archives as I know this topic has been discussed before, but I cannot find any info. I'm ondering what experiences others have had with respect to non-i; /archives//html/Amps/2002-11/msg00384.html (6,896 bytes)
8. [Amps] AB1 vs AB2 ??? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Thu, 28 Nov 2002 22:18:13 -0500 (EST); Greetings Amps gurus, Happy Holidays and special thanks to all who've been so helpful to me over the past year! It means a great deal to me. I'm wondering if someone can explain why AB2 GG service is; /archives//html/Amps/2002-11/msg00395.html (7,471 bytes)
9. [Amps] AB1 vs AB2 ??? (score: 1): Author: ad5gb@myway.com (ad5gb); Date: Fri, 29 Nov 2002 12:08:44 -0500 (EST); Greetings, Thanks Rich, for the explanation and idea. I have a 3300V xfmr which should give about 4600V. If I did want to use this thing for RTTY (which is unlikely) I wonder about this idea: Make th; /archives//html/Amps/2002-11/msg00397.html (7,531 bytes)
10. [Amps] 4CX350A for VHF? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Wed, 27 Aug 2003 21:45:49 -0400 (EDT); Greetings all, I was just given a shiny new pair of 4CX350As. I thought of trying to make a little desktop amp for 2M out of them but a quick look at Eimac's web page at the specs make me wonder if t; /archives//html/Amps/2003-08/msg00056.html (7,001 bytes)
11. [Amps] IMD Specs? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Wed, 19 Nov 2003 19:40:36 -0500 (EST); Greetings, In my travels on the web and in perusing old archives of the reflector I keep seeing mention of tube IMD specifications in tube's datasheets, I'm wondering where this data can be found as; /archives//html/Amps/2003-11/msg00272.html (7,095 bytes)
12. [Amps] Shuguang 6146B? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Tue, 2 Dec 2003 19:36:46 -0500 (EST); Hi amps people, Happy Holidays! Just wondering if anyone has had any experience with the newer Chinese 6146Bs. Wondering if it would be worth the savings? Thanks much -- Randall D. DuCharme (Radio AD; /archives//html/Amps/2003-12/msg00021.html (7,007 bytes)
13. Re: [Amps] 6146B vs 6146W (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Mon, 17 May 2004 21:42:02 -0400 (EDT); Just my 2.5 cents worth.... I've had mixed experiences with replacing 6146As or Ws with 6146Bs. My FT-102 seems quite happy with either though it requires a bias adjustment and a touch-up neutralizat; /archives//html/Amps/2004-05/msg00146.html (12,124 bytes)
14. RE: [Amps] (no subject) (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Thu, 28 Oct 2004 00:37:42 -0400 (EDT); Is this the one? http://wd7s.home.att.net -- Randall D. DuCharme (Radio AD5GB) Powered by FreeBSD! The Power to Serve Hello to the Group,<br>I am looking for the website of the guy selling the Displa; /archives//html/Amps/2004-10/msg00469.html (7,673 bytes)
15. RE: [Amps] Amazing ebay auction. (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Thu, 28 Oct 2004 01:32:29 -0400 (EDT); Great example of why I "don't do eBay" anymore. Seen this many times. Pays to shop wisely! -- Randall D. DuCharme (Radio AD5GB) Powered by FreeBSD! The Power to Serve I thought I'd seen it all until; /archives//html/Amps/2004-10/msg00471.html (8,399 bytes)
16. RE: [Amps] P.C. boards (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Fri, 10 Dec 2004 13:40:18 -0500 (EST); Is this what you're looking for? http://wd7s.home.att.net -- Randall D. DuCharme (Radio AD5GB) Powered by FreeBSD! The Power to Serve There's a fellow with a salty old call that makes P.C. boards<br>; /archives//html/Amps/2004-12/msg00163.html (7,337 bytes)
17. [Amps] 4CX1000A for SSB?? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Fri, 18 Mar 2005 15:33:36 -0500 (EST); I just found a chart that listed the distortion characteristics of varioius tubes. I was really disappointed to see how poorly the 4CX1000A ranked amongst the competitors. IIRC, I think it was the ab; /archives//html/Amps/2005-03/msg00398.html (7,571 bytes)
18. Re: [Amps] 4CX1000A for SSB?? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Wed, 23 Mar 2005 14:20:02 -0500 (EST); Hi all, This may be a great opportunity to learn something.... having never used a spectrum analyzer before and having only hobbyist knowlege of electronics (hence the reason I sometimes ask really d; /archives//html/Amps/2005-03/msg00534.html (12,302 bytes)
19. [Amps] 4CX350 distortion products? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Wed, 30 Mar 2005 10:47:26 -0500 (EST); Hi Amps gurus, Does anyone happen to have any distortion specs on the 4CX350F? I can't turn them up anywhere. Assuming the best possible screen and grid supplies, how do these do on HF in grid and ca; /archives//html/Amps/2005-03/msg00720.html (7,257 bytes)
20. [Amps] Memphis area help? (score: 1): Author: "ad5gb" <ad5gb@myway.com>; Date: Fri, 1 Apr 2005 11:05:40 -0500 (EST); Good morning, I'm wondering if there's anyone in the Memphis area with an amp that uses a 4CX1000A. I got 2 of these things very cheaply a while back and am contemplating a project using one. I'd lik; /archives//html/Amps/2005-04/msg00014.html (7,212 bytes)

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