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Total 102 documents matching your query.

81. Re: [Amps] MLA-2500 Tube Conversion (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 11 Oct 2021 22:04:35 -0500
My dad had an MLA-2500. Theyre Allen head screws. Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith ________________________________
/archives//html/Amps/2021-10/msg00050.html (12,292 bytes)

82. Re: [Amps] Drifting Power (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sat, 16 Oct 2021 16:38:28 -0500
Do you see this when using a dummy load, or your antenna, or both? Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith _______________
/archives//html/Amps/2021-10/msg00073.html (11,603 bytes)

83. 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)

84. 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)

85. 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)

86. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 2 Dec 2021 12:29:45 -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/msg00036.html (11,685 bytes)

87. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Fri, 3 Dec 2021 20:26:03 -0600
I should have qualified my response: 1500 W is indeed possible out of a pair of 3-500Zs, but the cooling must be letter perfect: air sockets, proper chimneys and proper plenum pressure. I suppose you
/archives//html/Amps/2021-12/msg00039.html (9,870 bytes)

88. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Fri, 3 Dec 2021 18:23:28 -0600
I should have qualified my response: 1500 W is indeed possible out of a pair of 3-500Zs, but the cooling must be letter perfect: air sockets, proper chimneys and proper plenum pressure. I suppose you
/archives//html/Amps/2021-12/msg00047.html (10,204 bytes)

89. Re: [Amps] Triode Amps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 5 Dec 2021 21:47:44 -0600
My guess is that the hardware to withstand higher B+ Is hard to come by. That and anything beyond 4 kV goes off the charts, so no one can say for sure what the characteristics are when run beyond 4 k
/archives//html/Amps/2021-12/msg00051.html (11,087 bytes)

90. Re: [Amps] DX-100B CW Keying (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 6 Jan 2022 00:03:01 -0600
Herein lies the problem with the written word: I took Mark's meaning as "I now know all I need to do what needed to do. I've solved my problem, thanks, so don't keep after this for my sake." I'm pret
/archives//html/Amps/2022-01/msg00036.html (9,651 bytes)

91. Re: [Amps] 8877 (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 24 Jan 2022 21:40:03 -0600
Holy high voltage!!! $7k for an AL1500 with an 8877?! I have an AL1200 that I got cheap several years ago. It needed some work and in the process I installed Ameritrons QSK-5 PIN diode QSK switch. Th
/archives//html/Amps/2022-01/msg00081.html (8,482 bytes)

92. Re: [Amps] 8877 (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 24 Jan 2022 21:55:41 -0600
Fortunately I have a spare 3CX1200A7! Kim N5OP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2022-01/msg00084.html (10,031 bytes)

93. Re: [Amps] 8877 (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 24 Jan 2022 23:20:52 -0600
This thing seems to weigh a ton, too. I think its billed at 77 lbs but its a heavy 77 lbs. Yet my dads WRL Globe Champion 350 is worse at something like 110 lbs. Kim N5OP ____________________________
/archives//html/Amps/2022-01/msg00086.html (12,095 bytes)

94. Re: [Amps] tuning a linear for AM operation (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 30 Jan 2022 23:52:55 -0600
Use CW to tune the amp for 4X the carrier power and you're good. The amp will be inefficient at carrier power, but will be properly loaded for thr peak power output and so "linear" with the cleanest
/archives//html/Amps/2022-01/msg00117.html (7,630 bytes)

95. Re: [Amps] Western Electric (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 22 Mar 2022 21:44:55 -0500
I once heard them derisively described as audiophools. Ive seen some horrifically expensive audio gear whose specifications are rather mediocre compared to modern solid state gear. I enjoy vacuum tub
/archives//html/Amps/2022-03/msg00041.html (10,318 bytes)

96. Re: [Amps] Western Electric (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 22 Mar 2022 23:22:49 -0500
Here's the datasheet on the WE300B: http://www.tubebooks.org/tubedata/we300a_b.pdf Kim N5OP On 3/22/2022 9:57 PM, Jim Brown wrote: On 3/22/2022 7:44 PM, Kim Elmore wrote: I once heard them derisively
/archives//html/Amps/2022-03/msg00046.html (9,881 bytes)

97. Re: [Amps] Western Electric (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 23 Mar 2022 23:24:11 -0500
I'm simply gobstopped by stuff like this. Lessee: the WE 91B sooper-dooper amplifier runs about $16k for 20 W per channel at an astonishing 10% THD! Compare that to the Yamaha A-S501 at 85 W per chan
/archives//html/Amps/2022-03/msg00068.html (9,472 bytes)

98. Re: [Amps] Western Electric (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 22 Mar 2022 23:10:37 -0500
Something about a fool and their money being easily parted comes to mind... Kim N5OP On 3/22/2022 10:55 PM, Gary K9GS wrote: One of my favorites. Pangea Audio Premier SE AC NEMA 5-20P Power Receptacl
/archives//html/Amps/2022-03/msg00070.html (10,308 bytes)

99. Re: [Amps] Western Electric (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Fri, 25 Mar 2022 20:14:30 -0500
Well... Maybe. I've read that tube amps are "better" because when they're over driven, they don't clip as "hard" as solid state amps. After some thought, I've concluded that it's not an inherent char
/archives//html/Amps/2022-03/msg00082.html (12,645 bytes)

100. Re: [Amps] 10 kw CCS on 6M (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sat, 10 Sep 2022 20:36:03 -0500
Don Fox raises a question Ive wondered about for years: how are these very high power amplifiers initially placed in service? Today, we have VNAs we can put in the palm of our hand, how is it done no
/archives//html/Amps/2022-09/msg00014.html (9,020 bytes)

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