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References: [ +from:km1h@jeremy.qozzy.com: 394 ]

Total 394 documents matching your query.

361. Re: [Amps] What happened to the G8WRB tube data site? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 8 Nov 2019 20:49:38 -0500
Thanks also, would have hated to lose that resource Carl -- Original Message -- From: "Alek Petkovic" <vk6apk@bigpond.com> To: "Zev Darack" <zevdarack@gmail.com> Cc: "Carl" <km1h@jeremy.qozzy.com>; "
/archives//html/Amps/2019-11/msg00060.html (11,248 bytes)

362. Re: [Amps] Dielectric grease for roller inductors ? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 28 Dec 2019 19:08:44 -0500
Call Oren Elliott and ask what they use. They proviided me a blob in a pill bottle decades ago but forget the name. Also Palstar. I wouldnt use anything but what the pros use. Carl -- Original Messag
/archives//html/Amps/2019-12/msg00051.html (8,607 bytes)

363. Re: [Amps] anyone build an amplifier use 6T51 glass buble? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 24 Jan 2020 21:34:28 -0500
Good for AM, CW, RTTY and FT8, horrible for SSB due to low amplification factor, heavy drive requirement and horrible IMD It would be like using a 5867 or 5868 in place of a 3-500Z and 3-1000Z. It is
/archives//html/Amps/2020-01/msg00034.html (12,749 bytes)

364. Re: [Amps] 3CX3000A7 on 144 MHz (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 5 Feb 2020 12:11:35 -0500
That would be a real stretch since the maximum frequency rating is 110 MHz and even if it could be made to work efficiency would be low. Are there any European TV tubes available at affordable prices
/archives//html/Amps/2020-02/msg00047.html (8,882 bytes)

365. Re: [Amps] LA100 tuner for input to amp (Not LP100) (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 15 Mar 2020 20:13:13 -0400
I used a pair, one on a Dentron DTR2000L (8877) and the other on a ClippertonL Both did well once the output was right at the tube. It was written by Jerry Pittigner, K8RA now a Silent Key. His ampli
/archives//html/Amps/2020-03/msg00069.html (9,448 bytes)

366. Re: [Amps] SSB-230 suppressors (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 25 May 2020 10:33:55 -0400
Heath had lots of trouble with that configuration and made several location changes. Over several decades Ive changed many over to a 47 Ohm 2W carbon resistor and 3T coil and more recently to the Ohm
/archives//html/Amps/2020-05/msg00044.html (7,913 bytes)

367. Re: [Amps] Push pull amps (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 2 Aug 2020 16:51:48 -0400
Cross netralization is often a single band afair with plug in coils and home construction. Parallel is far easier since the input can be swamped to burn off exciter RF as well as eliminate the need t
/archives//html/Amps/2020-08/msg00010.html (10,605 bytes)

368. Re: [Amps] B+W 850A parts? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 7 Aug 2020 18:19:02 -0400
Id use the same material as used in the Ameritron 1500W amp coils Whatever that is, I keep forgetting! It might help to put some air flow on them as the values are not ideal over a wide range of tube
/archives//html/Amps/2020-08/msg00028.html (7,788 bytes)

369. Re: [Amps] Fwd: B+W 850A parts? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 8 Aug 2020 09:17:37 -0400
I would suspect that fiberglass was added later. The two originals I have here are some form of plastic browning and cracking with age. Carl Similar issue, removed the old fiberglass type supports. U
/archives//html/Amps/2020-08/msg00031.html (9,166 bytes)

370. Re: [Amps] Alpha 76A Filter Caps? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sun, 22 Nov 2020 13:49:15 -0500
That style cap is obsolete for most and is a bit pricey. Ameritron still uses them to this day and are 270 uF and are somewhat cheaper. I used them in my own 76PA Carl Hey All, I've got an Alpha 76A
/archives//html/Amps/2020-11/msg00011.html (8,482 bytes)

371. Re: [Amps] Alpha service (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Tue, 8 Dec 2020 12:01:15 -0500
FWIW I still service the older Alphas without any computer circuitry. Carl Ham since 1955 Hello all I recently saw something, somewhere that Alpha was barely existing. Does anyone know if their servi
/archives//html/Amps/2020-12/msg00005.html (7,954 bytes)

372. Re: [Amps] Amp Supply Amps (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 18 Dec 2020 21:09:25 -0500
Amp Supply made good amps with quality components, my 1986 LK-500ZC still runs the original Eimac tubes. Output with 80W of drive is still 1200W, even on 160. It came with the external transformer op
/archives//html/Amps/2020-12/msg00048.html (11,517 bytes)

373. Re: [Amps] When did Grounded Grid begin? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 21 Dec 2020 15:14:32 -0500
That sounds like the amp that was at the dumpster during Nearfest in the 80's that I dragged home in my workhorse 85 Dodge 3/4 ton van with the long wheelbase. Rohn tower sections fit just fine as I
/archives//html/Amps/2020-12/msg00055.html (8,708 bytes)

374. Re: [Amps] SB-200 Mods (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 28 Jan 2021 11:50:56 -0500
The low mu GI-7B is about as IMD dirty it can be for SSB. and users should be drawn and quartered.. CW and digital is fine. Carl I agree with Jeff, adding 160 is just too much work and it would be a
/archives//html/Amps/2021-01/msg00030.html (12,231 bytes)

375. Re: [Amps] SB-200 Mods (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 28 Jan 2021 11:51:05 -0500
I converted several to 160 monobanders using the 572B's.in the 80's after 1500W was authorized. The new Tune cap was a surplus 365 pf vacuum variable Carl There was an article in one of the 60-70s ar
/archives//html/Amps/2021-01/msg00031.html (9,094 bytes)

376. Re: [Amps] SB-200 Mods (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 28 Jan 2021 11:51:20 -0500
For what benefit? The amp on 160 is extremely stable and clean, why muck it up? If someone is obsessed about QSK get an amp all ready to go or learn how to use VOX CW with a fast relay or speed up ci
/archives//html/Amps/2021-01/msg00032.html (13,449 bytes)

377. Re: [Amps] QRO HF2000 input SWR adjustments (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Tue, 16 Mar 2021 21:36:09 -0400
I wouldnt mess with it unless you absolutely want to lower it (and raise the low end) as those are typical results for most amps. An external tuner is an option. Carl The input SWR at 160m is below 1
/archives//html/Amps/2021-03/msg00020.html (8,457 bytes)

378. Re: [Amps] Junk Connectors, Junk Coax (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 15 Apr 2021 17:35:19 -0400
Personally I wouldnt use DXE connectors and stick to USA quality commercial/mil grade products.. Junk connectors are a scourge. In North America, if it isn't vintage MIL spec or Amphenol, it's junk.
/archives//html/Amps/2021-04/msg00078.html (11,294 bytes)

379. Re: [Amps] Alpha 87A Won't Transmit (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 15 Apr 2021 17:36:19 -0400
I am seeing a blue glow inside my 300B. Does this affect normal operation? Does this effect mean my tube is defective? I love the answer to this one and their explanation of matching is a close secon
/archives//html/Amps/2021-04/msg00079.html (13,111 bytes)

380. Re: [Amps] Junk Connectors, Junk Coax (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 15 Apr 2021 17:40:43 -0400
I still run a HB 3CX1000A7 amp on 2M. Early tests smoked mil spec "UHF" and type N has been fine going on 30 years. Carl -- Original Message -- From: <donroden@hiwaay.net> To: <jim@audiosystemsgroup.
/archives//html/Amps/2021-04/msg00080.html (10,331 bytes)

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