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281. Re: [Amps] Advice needed for SS amp (score: 1)
Author: donroden@hiwaay.net
Date: Thu, 06 Jun 2013 08:52:00 -0500
If refrigerated it can greatly increase the transistor's power handling capacity. Small dorm-sized refrigerator under $100. Don W4DNR _______________________________________________ Amps mailing list
/archives//html/Amps/2013-06/msg00101.html (9,696 bytes)

282. Re: [Amps] The Carl and Jim Show (score: 1)
Author: donroden@hiwaay.net
Date: Thu, 06 Jun 2013 09:06:12 -0500
If Jim and I werent a continent apart we would be the best of friends and also challenging each other at the drag strip or stop light, another interest we share. Carl KM1H Leaving in few minutes to w
/archives//html/Amps/2013-06/msg00102.html (9,043 bytes)

283. Re: [Amps] The Pin One Problem (score: 1)
Author: donroden@hiwaay.net
Date: Sat, 08 Jun 2013 05:37:58 -0500
I don't like the "Pin 1" term, but there may not be a better way to describe the problem in a one of two word title. Paul, W9AC One word ........ transformerless. Don W4DNR __________________________
/archives//html/Amps/2013-06/msg00177.html (8,828 bytes)

284. Re: [Amps] premade HV rectifier board (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 05 Jul 2013 21:08:10 -0500
I have several of what I call "the last diode stack you will ever need". Twenty-one of the following diodes in series arranged in a circular pattern around an insulated core and mounted on individual
/archives//html/Amps/2013-07/msg00026.html (10,352 bytes)

285. Re: [Amps] Source of Mica Caps? (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 05 Jul 2013 22:50:48 -0500
I'd much prefer a 3CX3000 or 4CX3000, or a pair of 8877s. 73 Roger (K8RI) http://www.ebay.com/itm/Undrilled-Aluminum-Chassis-Delta-Labs-77DD-dual-8877-3-5-30MHz-Linear-Amplifier-/151063088977?pt=US_
/archives//html/Amps/2013-07/msg00030.html (7,250 bytes)

286. Re: [Amps] Glass Tape (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 29 Jul 2013 10:59:25 -0500
fiberglass, which is an organic material and glass fiber which is not. Corvettes are made of the latter! Older Corvettes were fiberglass Newer Corvettes are tupperware ( I got one ) Don W4DNR _______
/archives//html/Amps/2013-07/msg00104.html (8,132 bytes)

287. Re: [Amps] testing the biggest one (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 02 Aug 2013 21:58:58 -0500
EME with a single dipole !!!! Don W4DNR _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2013-08/msg00015.html (8,394 bytes)

288. [Amps] OTA TV (score: 1)
Author: donroden@hiwaay.net
Date: Sat, 03 Aug 2013 12:13:58 -0500
I for one will miss the OTA broadcasts once they are gone. They had much better picture quality than this compressed "stuff" we get via cable or satellite. The FCC sold the public a bill of goods wh
/archives//html/Amps/2013-08/msg00027.html (9,536 bytes)

289. Re: [Amps] Shortwave Returns? [Was: testing the biggest one] (score: 1)
Author: donroden@hiwaay.net
Date: Sat, 03 Aug 2013 14:49:18 -0500
Money is freedom.... Don't like where u are leave.... Poor Argument..... Lack of money = No freedom to leave. The peasants are trapped. Don W4DNR _______________________________________________ Amps
/archives//html/Amps/2013-08/msg00033.html (10,476 bytes)

290. Re: [Amps] OTA TV (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 05 Aug 2013 16:29:40 -0500
My understanding is that with the switch to digital the TV companies were permitted to switch off the OTA transmitters in markets of less than 250k. 73 Roger VE3ZI Here in the good ole USofA , statio
/archives//html/Amps/2013-08/msg00048.html (7,003 bytes)

291. Re: [Amps] OTA TV (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 05 Aug 2013 18:16:54 -0500
Other than a few digital geeks , no one wanted HDTV. I will STRONGLY disagree with you on that one, Don. I'm a genuine old fart, and I LOVE DTV, especially HD. If you are a ham, you are an original g
/archives//html/Amps/2013-08/msg00050.html (9,836 bytes)

292. Re: [Amps] Electron HOLE flow (score: 1)
Author: donroden@hiwaay.net
Date: Wed, 28 Aug 2013 11:36:53 -0500
I visualize a golf course where a gazillion holes are trying to grab a ball. Should be a par 18. Don W4DNR ORIGINAL MESSAGE: (may be snipped) They still refer to "hole flow" in introductory semicondu
/archives//html/Amps/2013-08/msg00154.html (7,984 bytes)

293. Re: [Amps] Hole Flow (score: 1)
Author: donroden@hiwaay.net
Date: Sat, 31 Aug 2013 21:14:00 -0500
This thread reminds me of the neverending debate about whether lightning jumps from the cloud to the ground, or from the ground to the cloud! But not as unending as the Motorcycle forums, "Which oil
/archives//html/Amps/2013-08/msg00199.html (8,220 bytes)

294. [Amps] Future of RF AMPS (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 10 Sep 2013 12:03:22 -0500
Gold-Clamp Transistors -- Gold Clamp allows RF transistors to be changed in minutes with only a screwdriver and without needing a soldering iron. Should a transistor fail, several screws are removed,
/archives//html/Amps/2013-09/msg00009.html (7,540 bytes)

295. Re: [Amps] Quiet from Amps lately (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 10 Sep 2013 14:41:16 -0500
Haven't received anything since Sept 2. Most unlike this group to be silent about much. My birthday was the 2nd, and everyone was so shocked that I lived this long that they were typeless. DoN W4DNR
/archives//html/Amps/2013-09/msg00012.html (7,264 bytes)

296. Re: [Amps] Gold Clamp RF Devices (score: 1)
Author: donroden@hiwaay.net
Date: Wed, 11 Sep 2013 09:39:51 -0500
Quoting David Shapiro Roger at BW Broadcast implemented this design around 10+ years ago. I've used a BW 1KW output FM transmitter for a couple of years now in 24/7 commercial service. Good transmitt
/archives//html/Amps/2013-09/msg00034.html (6,734 bytes)

297. Re: [Amps] Workshop Danger (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 13 Sep 2013 09:44:04 -0500
Ditto on using a machine shop. A trip to the doctor costs too much these days. Don W4DNR _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.
/archives//html/Amps/2013-09/msg00118.html (7,651 bytes)

298. Re: [Amps] Direct rectification of AC mains to derive the amp VDD, supply (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 17 Sep 2013 18:11:19 -0500
Quoting Jim Brown <jim@audiosystemsgroup.com>: These fundamental requirements combine to make direct rectification of the mains more than a bit impractical if you care about safety and freedom from E
/archives//html/Amps/2013-09/msg00213.html (7,899 bytes)

299. Re: [Amps] Re Direct rectification of AC mains to derive the amp, VDD, supply (score: 1)
Author: donroden@hiwaay.net
Date: Thu, 19 Sep 2013 11:43:00 -0500
QST has dumbed down a lot lately. 73, Bill W6WRT Lately ??? Just after Newington convinced us to become Life Members, they launched QEX with no option of moving our subscription from QST to QEX. QST
/archives//html/Amps/2013-09/msg00240.html (8,567 bytes)

300. Re: [Amps] 115 to 220 VAC (score: 1)
Author: donroden@hiwaay.net
Date: Sat, 05 Oct 2013 11:53:12 -0500
Paul, Your example is a box with two 115vac plugs that need to be plugged into phase #1 and Phase #2 to "make" 230vac ..... something that would be hit-or-miss depending on the way the room was wired
/archives//html/Amps/2013-10/msg00054.html (7,515 bytes)

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