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Total 35 documents matching your query.

1. [Amps] Triode Amps (score: 1)
Author: AJ <iamfromcanadaalso@gmail.com>
Date: Thu, 2 Dec 2021 08:48:24 -0500
Looking for info on manufactures of currently made QRO triode amps. Is there a list someplace with data on the net? Does anyone have a compiled list? I have looked at sparky. Thanks AJ___ VE3HJ _____
/archives//html/Amps/2021-12/msg00002.html (6,648 bytes)

2. Re: [Amps] Triode Amps (score: 1)
Author: gudguyham--- via Amps <amps@contesting.com>
Date: Thu, 2 Dec 2021 14:09:33 +0000 (UTC)
It seems that all the European amp companys use Tetrodes.  None use Triodes.   All the Japanese companies went solid state.  Most US companies are defunct.   The last man standing in the US that stil
/archives//html/Amps/2021-12/msg00003.html (8,228 bytes)

3. Re: [Amps] Triode Amps (score: 1)
Author: Steve London <n2icarrl@gmail.com>
Date: Thu, 2 Dec 2021 08:32:29 -0700
For a jaw-dropping experience, go to https://mfjenterprises.com/collections/ameritron/products/383-0800-a7-2 $2499.95 for a 3CX800. Makes RFParts look like a bargain at $1397.91. The best deal may be
/archives//html/Amps/2021-12/msg00004.html (9,268 bytes)

4. Re: [Amps] Triode Amps (score: 1)
Author: Jay Sturtevant <k2ztdx@gmail.com>
Date: Thu, 2 Dec 2021 11:16:01 -0500
AJ, If I remember correctly, you helped me with a spare filter cap. board for my Commander HF 2500. Thank you! What is your opinion of the Command Amps available on the used market today? Jay, K2ZT _
/archives//html/Amps/2021-12/msg00005.html (10,384 bytes)

5. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 2 Dec 2021 11:17:30 -0600
But arent good tetrodes also very expensive? Were a tiny market share and we need rare stuff and that translates to ex$pensive. Kim N5OP "People that make music together cannot be enemies, at least a
/archives//html/Amps/2021-12/msg00006.html (11,627 bytes)

6. Re: [Amps] Triode Amps (score: 1)
Author: gudguyham--- via Amps <amps@contesting.com>
Date: Thu, 2 Dec 2021 17:55:51 +0000 (UTC)
Commander amps are high on my list of most popular.  They are built well and everything is at or beyond standard for use.  Heavy duty transformers that dont go bad.  Ive never seen a bad one.  Major
/archives//html/Amps/2021-12/msg00007.html (11,882 bytes)

7. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 2 Dec 2021 14:16:25 -0600
I'm glad my amp has only *one* of these: https://mfjenterprises.com/collections/ameritron/products/383-1200-z7-2 at $3499 a shot, except that mine uses the earlier -A7 version which is even more expe
/archives//html/Amps/2021-12/msg00012.html (8,718 bytes)

8. Re: [Amps] Triode Amps (score: 1)
Author: Victor Rosenthal 4X6GP <k2vco.vic@gmail.com>
Date: Thu, 2 Dec 2021 22:38:19 +0200
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2021-12/msg00014.html (7,453 bytes)

9. Re: [Amps] Triode Amps (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Thu, 2 Dec 2021 22:15:59 +0100
Eimac specifies 890W for a single tube at 3.5KV plate voltage and 740W at 3kV. 73 Peter, DJ7WW The 3-500Z is an excellent tube, but 1500 W isn't reasonably available out of a pair, even at increased
/archives//html/Amps/2021-12/msg00015.html (8,599 bytes)

10. Re: [Amps] Triode Amps (score: 1)
Author: "Tim Duffy" <k3lr@k3lr.com>
Date: Thu, 2 Dec 2021 16:19:09 -0500
My favorite triode for 1500 watts all day is a single 8877. 4KV and 30 watts drive. Used 8877s exist and are more than capable for long lives. Some of the 8877s at K3LR have date codes from the 70s..
/archives//html/Amps/2021-12/msg00016.html (9,473 bytes)

11. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 2 Dec 2021 15:53:29 -0600
Im an admitted B+ junkie. I modified an AL-80A power supply and output circuit for about 3.6 kV B+ under load and got about 800 W out (depending on the band). Cooling is a serious issue with the glas
/archives//html/Amps/2021-12/msg00018.html (9,749 bytes)

12. Re: [Amps] Triode Amps (score: 1)
Author: AJ <iamfromcanadaalso@gmail.com>
Date: Thu, 2 Dec 2021 17:08:18 -0500
My current issue is with a Palstar 2500E which is a totally different beast compared to the previous Commander versions. Only a handful of them made according to Paul. It has three 3CPX800A7's in it.
/archives//html/Amps/2021-12/msg00019.html (11,319 bytes)

13. Re: [Amps] Triode Amps (score: 1)
Author: gudguyham--- via Amps <amps@contesting.com>
Date: Thu, 2 Dec 2021 22:44:57 +0000 (UTC)
The Palstar version of Commander was always   Don Kessler.  There was about one full run of the line sold and I dont believe the second run ever went into production.  I have two of the Palstar 2500s
/archives//html/Amps/2021-12/msg00022.html (12,992 bytes)

14. Re: [Amps] Triode Amps (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 3 Dec 2021 10:53:46 +0800
I'm about to rebuild the power supply in my 2500. When I do, I'll be cutting a hole in the bottom of the amp wnad then making a cover plate, so the power supply can be more easily accessed in the fut
/archives//html/Amps/2021-12/msg00026.html (13,552 bytes)

15. Re: [Amps] Triode Amps (score: 1)
Author: David Gow <6146guy@gmail.com>
Date: Thu, 2 Dec 2021 20:38:24 -0800
3-500z Eimac Data Sheet says Typical Operation 890 watts useful power output CW or PEP with 3500 volts on the plate. Maximum plate voltage 4000 volts. Henry ran them at 4000 on the 3KA. I had one wit
/archives//html/Amps/2021-12/msg00027.html (14,364 bytes)

16. Re: [Amps] Triode Amps (score: 1)
Author: Robert W5AJ <woodr90@gmail.com>
Date: Fri, 3 Dec 2021 00:22:19 -0600
Tim, do you initially check 8877 filament voltage? Monitor regularly? Robert W5AJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mai
/archives//html/Amps/2021-12/msg00028.html (10,114 bytes)

17. Re: [Amps] Triode Amps (score: 1)
Author: AJ <iamfromcanadaalso@gmail.com>
Date: Fri, 3 Dec 2021 06:58:19 -0500
Ok so how do I get in touch with him then? I looked for an e-mail address none to be found. No issue with replacing the filament transformer I have one I could use. Yes tested it out of the circuit.
/archives//html/Amps/2021-12/msg00029.html (14,452 bytes)

18. Re: [Amps] Triode Amps (score: 1)
Author: gudguyham--- via Amps <amps@contesting.com>
Date: Fri, 3 Dec 2021 12:09:25 +0000 (UTC)
Google Kessler engineering.  He sells a special kit for TL922 amps under that name.  Youll find his website.  I tried for information on my Palstar amp, but didnt get much satisfaction.  Im not point
/archives//html/Amps/2021-12/msg00030.html (14,993 bytes)

19. Re: [Amps] Triode Amps (score: 1)
Author: AJ <iamfromcanadaalso@gmail.com>
Date: Fri, 3 Dec 2021 07:13:07 -0500
I have looked at 8877's, seems there is only one company using them currently. Maybe there are others? AJ___ VE3HJ _______________________________________________ Amps mailing list Amps@contesting.co
/archives//html/Amps/2021-12/msg00031.html (10,241 bytes)

20. Re: [Amps] Triode Amps (score: 1)
Author: "Mike McCarthy, W1NR" <lists@w1nr.net>
Date: Fri, 3 Dec 2021 08:35:56 -0500
Ameritron and Alpha use them. Seems like all sources for used ones have dried up but the Chinese ones work well IF you buy them from a reputable company who tests them and will stand by them with a w
/archives//html/Amps/2021-12/msg00032.html (9,314 bytes)

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