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

Total 394 documents matching your query.

201. Re: [Amps] Ham Tests, was Price per Watt Conversation (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Thu, 27 Apr 2017 20:54:10 -0400
-- Original Message -- From: "Mark Bitterlich" <markbitterlich@embarqmail.com> To: "Bill Turner" <dezrat@outlook.com>; "Amps group" <amps@contesting.com> Cc: "Robert Melle" <bmelle@yahoo.com> Sent: T
/archives//html/Amps/2017-04/msg00355.html (13,802 bytes)

202. Re: [Amps] Ham Tests, was Price per Watt Conversation (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 28 Apr 2017 21:11:51 -0400
You might be going on 76 Jim but when you cant stay on subject I begin to wonder. Im going on 77 and knew the subject was about emergency comms, not daydreaming in the home ham shack. Carl I've prima
/archives//html/Amps/2017-04/msg00404.html (14,840 bytes)

203. Re: [Amps] Ham Tests... (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 28 Apr 2017 21:20:22 -0400
It has been that way for decades as far as casual CW. OTOH there is plenty of general DX, DXpeditions and almost a contest a week to keep things happening at least down in the Extra part of the bands
/archives//html/Amps/2017-04/msg00405.html (9,071 bytes)

204. Re: [Amps] Ham Tests, was Price per Watt Conversation (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 14:54:38 -0400
If you can find a real matched pair and not Chinese trash. MRF458 and MRF 454 transistors are still available and you can also use 2SC2879. 73 Peter, DJ7WW <I wouldn't worry too much about transistor
/archives//html/Amps/2017-05/msg00010.html (8,703 bytes)

205. Re: [Amps] Drivel (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 15:03:32 -0400
PLUS 1 Mark! To evaluate your opinion (and it is nothing but opinion, based on a religious belief in CW), I'd like to know exactly what emergency communications operations you have been a part of in
/archives//html/Amps/2017-05/msg00012.html (12,123 bytes)

206. Re: [Amps] Drivel (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 15:10:39 -0400
IF a CW SOS was not heard by the generally useless ham contingent does that mean it was never sent? To evaluate your opinion (and it is nothing but opinion, based on a religious belief in CW), I'd li
/archives//html/Amps/2017-05/msg00013.html (9,544 bytes)

207. Re: [Amps] Drivel (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 15:10:47 -0400
BS. One way emergency transmissions are quite common. -- ORIGINAL MESSAGE --(may be snipped) The CW ID on The aviation frequencies certainly can be an emergency communication. REPLY: To me, communica
/archives//html/Amps/2017-05/msg00014.html (8,671 bytes)

208. Re: [Amps] Emergency communication (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 15:10:54 -0400
The NCX-3 came out in 1962, the Drake TR-3 in 63, and the Swan monobanders in 61 which was only a few years after SSB became serious with the 1957 HT-32, 1959 CE-100V, 1960 HT-37. Before that SSB gea
/archives//html/Amps/2017-05/msg00015.html (15,222 bytes)

209. Re: [Amps] Ham Tests, was Price per Watt Conversation (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 18:15:51 -0400
And a matched set of 16 2SC2879 is only $1039.20 !! I wonder how many 16 Pill CBers blow them regularly! -- Original Message -- From: "Peter Voelpel" <dj7ww@t-online.de> To: "'Carl'" <km1h@jeremy.qoz
/archives//html/Amps/2017-05/msg00023.html (10,802 bytes)

210. Re: [Amps] Efficient amplifier design (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 18:23:27 -0400
The 833A will run fine to 20M and it was also THE TUBE for Class B modulators. The Gates BC-1T BCB rig I stripped for "iron" parts ran 4. Cathy, How much easier does the design become if we select an
/archives//html/Amps/2017-05/msg00024.html (10,575 bytes)

211. Re: [Amps] 144 MHz GS35B update (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 18:29:07 -0400
That tube also neeeds 3000-3500V before it shows good efficiency. My 2M 3CX1000A7 needs 80W for 1800 out at 3000V but it was a pull when I got it with socket 35 years ago and still runs the same. Car
/archives//html/Amps/2017-05/msg00025.html (9,303 bytes)

212. Re: [Amps] 144 MHz GS35B update (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 1 May 2017 21:06:07 -0400
That will make it sit up and howl at the moon Paul Carl I've got a little more than that. My supply is 4100V no load and typically 3900 at 1500W out. Paul On 05/01/2017 06:29 PM, Carl wrote: That tub
/archives//html/Amps/2017-05/msg00027.html (8,785 bytes)

213. Re: [Amps] Drivel (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Tue, 2 May 2017 15:37:59 -0400
Bill, find somebody else to annoy, this is getting tiresome. -- ORIGINAL MESSAGE --(may be snipped) What I said was that using CW in an emergency will not get you killed. REPLY: Of course it won't ge
/archives//html/Amps/2017-05/msg00039.html (8,855 bytes)

214. Re: [Amps] 144 MHz GS35B update (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Tue, 2 May 2017 16:20:06 -0400
That means nothing if the input and output were not retuned at each step or modified as needed. What class and bias is being used at each step and are the tube curves being used to select the sweet s
/archives//html/Amps/2017-05/msg00040.html (12,871 bytes)

215. Re: [Amps] Efficient amplifier design (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Tue, 2 May 2017 16:22:32 -0400
Mine is a pair of 304TL's and 6C21's run as 450TL's. Carl The 833A will run fine to 20M and it was also THE TUBE for Class B modulators. I still have a quad of 833As for a bucket list 160 meter amp o
/archives//html/Amps/2017-05/msg00041.html (8,400 bytes)

216. Re: [Amps] PL172 (8295) (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 6 May 2017 11:46:02 -0400
The original PL-172 with glass seals is NOTORIOUS for air leakage and not outgassing from the anode.....big difference. Carl I would not be too concerned about leakage. It happens, but very very seld
/archives//html/Amps/2017-05/msg00085.html (9,553 bytes)

217. Re: [Amps] Why a voltage doubler ? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 13 May 2017 18:55:57 -0400
The doubler had been used by hams since the 30's but made it into prime time with QST articles aimed at the Novice and other money challenged hams. National and Collins were early users and within a
/archives//html/Amps/2017-05/msg00132.html (10,430 bytes)

218. Re: [Amps] Why a voltage doubler ? (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 13 May 2017 20:59:23 -0400
Capacitance is cheap these days so doubling that covers the issue. Carl Doesn't a full wave bridge give you better regulation as all capacitors are charged on both halves of the AC waveform, where as
/archives//html/Amps/2017-05/msg00134.html (12,210 bytes)

219. Re: [Amps] Interesting new amplifier (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 20 May 2017 09:37:04 -0400
<As others have already said, FCC approval does not apply to imported <amps. That's why you could purchase Emtron's DX-2sp, DX-3sp, and DX5 tetrode amps. The gain was not limited as is the gain for t
/archives//html/Amps/2017-05/msg00183.html (12,249 bytes)

220. Re: [Amps] Interesting new amplifier (score: 1)
Author: "Carl" <km1h@jeremy.qozzy.com>
Date: Sat, 20 May 2017 10:31:25 -0400
<Yes, you could, but I wonder whether this would be legal, or just <nobody cares. <The FCC form 740 have to be filled when a HF power amplifier is being <imported in the USA. The importer has to decl
/archives//html/Amps/2017-05/msg00186.html (11,500 bytes)

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