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References: [ +from:mausoptik@btinternet.com: 216 ]

Total 216 documents matching your query.

201. Re: [Amps] Fw: Question for new amateur radio operators (score: 1)
Author: "DAVE WHITE" <mausoptik@btinternet.com>
Date: Sat, 26 May 2012 08:17:46 +0100
I suppose I was quite similar myself, Ed. I bought a vaguely working 813 amplifier off someone who'd built a bigger amp, fixed it, then a vaguely working Heath SB220, then decided to build my own 4-1
/archives//html/Amps/2012-05/msg00337.html (10,552 bytes)

202. Re: [Amps] tube fils..again (score: 1)
Author: Dave White <mausoptik@btinternet.com>
Date: Sat, 16 Jun 2012 20:27:33 +0200
I've known plenty of people use ex-computer 5V DC switch mode supplies for the heaters on oxide cathode tubes like 4CX250Bs (G6ABU used them for years in his 2 metre contest amps) - probably because
/archives//html/Amps/2012-06/msg00212.html (8,356 bytes)

203. Re: [Amps] Tube Theory? (score: 1)
Author: Dave White <mausoptik@btinternet.com>
Date: Thu, 21 Jun 2012 08:41:48 +0200
Eimac produced a good book called "Care and Feeding of Power Grid Tubes". I'm sure I saw a PDF somewhere so it's worth googling to see what you can find. About 20 years ago I wrote to Eimac and asked
/archives//html/Amps/2012-06/msg00319.html (8,048 bytes)

204. Re: [Amps] tubes without handles (score: 1)
Author: Dave White <mausoptik@btinternet.com>
Date: Thu, 21 Jun 2012 19:37:24 +0200
IPA means "India Pale Ale" to me :-) Dave G0OIL Called IPA in the industry _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/li
/archives//html/Amps/2012-06/msg00347.html (9,283 bytes)

205. Re: [Amps] Tube Theory? (score: 1)
Author: Dave White <mausoptik@btinternet.com>
Date: Thu, 21 Jun 2012 19:40:55 +0200
Thanks Jim. I knew I'd seen it somewhere and of course (even better to a Yorkshireman who's half Scottish) it's FREE :-) Dave G0OIL "Care and Feeding of Power Grid Tubes" Available here: http://www.c
/archives//html/Amps/2012-06/msg00348.html (9,787 bytes)

206. Re: [Amps] 3CX1500A7 pulled from MRI (score: 1)
Author: "DAVE WHITE" <mausoptik@btinternet.com>
Date: Fri, 3 Aug 2012 12:39:02 +0100
"I read recently that the US military no longer sells obsolete electronics. They Yes, it's the same here Dave G0OIL _______________________________________________ Amps mailing list Amps@contesting.c
/archives//html/Amps/2012-08/msg00072.html (9,105 bytes)

207. Re: [Amps] Create Rotor (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Sat, 3 Nov 2012 08:36:38 +0000 (GMT)
It was about 10 years ago, but I needed some spare parts for my RC5B3 and Create sent them to me from Japan for just the price of the shipping.  Try them. If not, I know that UKW-Berichte in Germany
/archives//html/Amps/2012-11/msg00017.html (8,231 bytes)

208. Re: [Amps] conductive grease for roller inductor (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Fri, 23 Nov 2012 13:27:21 +0000 (GMT)
Perhaps try petroleum jelly?  Thids is sold under the trade name "Vaseline" here in the UK. It's commonly used on car battery terminals as it's (a) conductive (at DC, I don't know about RF) (b) corro
/archives//html/Amps/2012-11/msg00158.html (10,144 bytes)

209. Re: [Amps] Mounting Plate for a 3CX3000A7 (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Tue, 1 Jan 2013 23:45:20 +0000 (GMT)
I seem to remember getting one from RF Parts about 10-15 years ago.  I don't know if they still stock them.  There was a separate grid ring and filament filament assembly.  It's been in reliable serv
/archives//html/Amps/2013-01/msg00009.html (7,999 bytes)

210. Re: [Amps] New 4-1000 Tubes ? (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Sun, 6 Jan 2013 00:18:18 +0000 (GMT)
I thought you used one of those as the driver, Alex :-) Dave G0OIL Russian GU46 is close to 4-1000:    http://www.ur4ll.net/26-GU46.jpg My QRO Parts Site: http://www.ur4ll.net Best regards, Alex, UR4
/archives//html/Amps/2013-01/msg00048.html (8,110 bytes)

211. Re: [Amps] FW: Re: Heatsinks for SSPAs - Newbie Questions and UK source (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Mon, 4 Mar 2013 07:26:12 +0000 (GMT)
Wouldn't heat rise in water too, Peter?  You see convection currents in a pan of water that's heating up from below on the stove.  Dave G0OIL Heat only rises in air, where it heats the air and makes
/archives//html/Amps/2013-03/msg00038.html (9,487 bytes)

212. Re: [Amps] BAD DEAL STAY AWAY! (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Wed, 20 Mar 2013 07:12:03 +0000 (GMT)
Thanks for the heads-up, Carey.  Much appreciated. When I've bought Russian tubes I usually buy them on the fleamarket at Friedrichshafen, knowing that most fleamarket sellers will be back again the
/archives//html/Amps/2013-03/msg00269.html (9,682 bytes)

213. Re: [Amps] BAD DEAL STAY AWAY! / an alternative source (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Wed, 20 Mar 2013 08:51:32 +0000 (GMT)
I'd hardly call Ebay and Paypal exactly reputable companies - there aren't too many of those left these days - but they will usually resolve a dispute on the side of the buyer and will be heavily inf
/archives//html/Amps/2013-03/msg00270.html (9,806 bytes)

214. Re: [Amps] Look at this Custom 10kW Amp (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Thu, 11 Apr 2013 10:45:27 +0100 (BST)
Bring it over to Germany, Don.  Legal to drive at it's maximum on many of the autobahns and tell me what lap time you set at the Nurburgring.  You won't catch the Porsches, but it'll sure as hell be
/archives//html/Amps/2013-04/msg00064.html (9,109 bytes)

215. Re: [Amps] Quiet from Amps lately (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Tue, 10 Sep 2013 22:07:22 +0100 (BST)
Happy Birthday dude Dave G0OIL My birthday was the 2nd, and everyone was so shocked that I lived this long that they were typeless. DoN W4DNR _______________________________________________ Amps mail
/archives//html/Amps/2013-09/msg00015.html (8,448 bytes)

216. Re: [Amps] Workshop Danger (score: 1)
Author: DAVE WHITE <mausoptik@btinternet.com>
Date: Fri, 13 Sep 2013 16:39:57 +0100 (BST)
That's exactly my technique too.  The thought of using a fly cutter fills me with terror, they look to be about the most ill-thought-out dangerous tool imaginable.  I think they're actually designed
/archives//html/Amps/2013-09/msg00123.html (11,540 bytes)

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