Search String: Display: Description: Sort:

Results:

References: [ +from:k7fm@teleport.com: 769 ]

Total 769 documents matching your query.

281. Re: [Amps] Mega Mobile (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Sun, 25 Apr 2004 08:27:03 -0700
"You just gotta see this... takes mobile QRO to a whole new level: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3093349628&category=4871 0&ss Page
/archives//html/Amps/2004-04/msg00185.html (7,795 bytes)

282. Re: [Amps] one people, separated by a common language (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Mon, 26 Apr 2004 21:24:33 -0700
In the discussions of heath Robinson, it sounded a bit like our Rube Goldberg. I had not been to the official Rube Goldberg website lately, and take a short excursion into history at www.rube-goldber
/archives//html/Amps/2004-04/msg00227.html (8,454 bytes)

283. Re: [Amps] DVM recomendation (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Fri, 7 May 2004 19:44:06 -0700
I have a dozen dvms around. My top end dvms include two Flukes and a Hewlett Packard. One day, I decided to test the accuracy of my meters (only on dc voltage and resistance). I was surprised to see
/archives//html/Amps/2004-05/msg00085.html (10,154 bytes)

284. Re: [Amps] AM (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Fri, 27 Aug 2004 06:01:00 -0700
What next, spark transmitters? Perhaps we can wait until BPL is fully implemented. In that case, just discussing the matter on the Amps will increase the noise on the radio spectrum. One of the unmen
/archives//html/Amps/2004-08/msg00379.html (10,448 bytes)

285. [Amps] New ARRL Book on RF Amplifiers (score: 1)
Author: "COLIN LAMB" <k7fm@teleport.com>
Date: Fri, 27 Aug 2004 13:41:43 -0700
ARRL has just published a new book entitled - RF Amplifier Classics. It is under $20 and may be useful. Colin K7FM COLIN LAMB k7fm@teleport.com Why Wait? Move to EarthLink. __________________________
/archives//html/Amps/2004-08/msg00407.html (6,689 bytes)

286. Re: [Amps] ARRL Amplifier book (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Sun, 5 Sep 2004 17:17:18 -0700
"One RF-110A resides in my shop bathroom" This is not only the ultimate in efficiency but it allows one to monitor exhaust airflow with a sniff test. Hopefully none of this modulates the rf. I have b
/archives//html/Amps/2004-09/msg00090.html (8,819 bytes)

287. Re: [Amps] Quiet Cooling (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Mon, 6 Sep 2004 16:44:23 -0700
Most motorcycles are loud. Those with the most power make the most noise. Same with recip aircraft engines. Sort of an ego thing. So, why do we want to quiet the fans? Shouldn't fans be a dull roar,
/archives//html/Amps/2004-09/msg00133.html (8,197 bytes)

288. Re: [Amps] Collins 30L-1 / 572's B (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Sun, 19 Sep 2004 19:25:14 -0700
"With 1700VDC on the anode, there would be virtually no advantage to 572Bs for SSB." Well, maybe not if you have no problem with holes in the plate. Many years ago, before I realized that you should
/archives//html/Amps/2004-09/msg00344.html (8,461 bytes)

289. Re: [Amps] 20kw Dummy load? (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Fri, 24 Sep 2004 06:01:53 -0700
Hey guys. The FCC has authorized the perfect dummy load. Since BPL has been shown to the satisfaction of the FCC not to cause interference, all you need to do is plug in your 20 kw rig into the BPL c
/archives//html/Amps/2004-09/msg00443.html (9,050 bytes)

290. Re: [Amps] Power metering in linears (score: 1)
Author: Colin Lamb <k7fm@teleport.com>
Date: Thu, 7 Oct 2004 13:03:28 -0700 (GMT-07:00)
Diodes are not linear. But, that is not the problem. The non-linearity does not depend upon frequency but is controlled by the rectification process. Non-linearity can be calibrated out easily with
/archives//html/Amps/2004-10/msg00073.html (12,073 bytes)

291. Re: [Amps] 5 kw amps -- why? (score: 1)
Author: Colin Lamb <k7fm@teleport.com>
Date: Tue, 19 Oct 2004 10:44:58 -0700 (GMT-07:00)
There are a number of reasons to use the Emtron DX4 amplifier. Here are a few: 1. You do not have the room for anything larger. 2. You cannot afford a larger amp. 3. Your significant other has limite
/archives//html/Amps/2004-10/msg00261.html (7,837 bytes)

292. Re: [Amps] RE: Snipers are the scourge of Ebay] (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Wed, 20 Oct 2004 16:58:17 -0700
"This is true, but it all comes down to being disciplined in your price. DO NOT get caught up in the bidding wars. Decide what you want to bid and don't go higher. Art" C'mon Art. How am I going to m
/archives//html/Amps/2004-10/msg00338.html (8,353 bytes)

293. Re: [Amps] Tentec TITAN III vs ALPHA99 (score: 1)
Author: Colin Lamb <k7fm@teleport.com>
Date: Mon, 25 Oct 2004 14:28:40 -0700 (GMT-07:00)
The led display of the Alpha 99 is better at displaying the true voice power of the amplifier, since there is no mechanical delay of a meter. Although peak hold circuits can be utilized with meters,
/archives//html/Amps/2004-10/msg00417.html (7,551 bytes)

294. Re: [Amps] toroid filament choke? (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Wed, 27 Oct 2004 07:13:05 -0700
"You have to keep in mind the current surge there until the heater warms up. The colder the heater is, the more current it draws. I would use a conductor with at least 750 cir mils per ampere. For 3
/archives//html/Amps/2004-10/msg00441.html (8,362 bytes)

295. Re: [Amps] toroid filament choke? (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Wed, 27 Oct 2004 17:43:24 -0700
"It takes up to one minute + for the heater to reach operating temperature. A cold heater is only a few ohms, and that's a lot of current." Although it will take up to 3 minutes for the cathode to co
/archives//html/Amps/2004-10/msg00462.html (8,506 bytes)

296. Re: [Amps] toroid filament choke? (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Wed, 27 Oct 2004 19:58:54 -0700
"16 gage is rated for 10 amperes in conduit" Conduit is a closed space. An open space, especially with air blowing over it, will allow considerably higher current. Colin K7FM -- Outgoing mail is cert
/archives//html/Amps/2004-10/msg00466.html (8,568 bytes)

297. Re: [Amps] filament voltage question (score: 1)
Author: Colin Lamb <k7fm@teleport.com>
Date: Fri, 29 Oct 2004 08:34:16 -0700 (GMT-07:00)
It seems that the sag can be used to compensate for the increase in voltage due to back bombardment. If you set the voltage at 6.0 volts, for example, and the filament voltage drops under the load of
/archives//html/Amps/2004-10/msg00506.html (14,422 bytes)

298. Re: [Amps] Ten-Tec Centurion (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Wed, 10 Nov 2004 17:25:29 -0800
"RF sensed switching invariably results in the amplifier hot-switching because RF is already present when the relays in the amplifier begin to switch. Hot-switching creates current transients and tho
/archives//html/Amps/2004-11/msg00135.html (8,720 bytes)

299. Re: [Amps] Ten-Tec Centurion (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Wed, 10 Nov 2004 19:40:23 -0800
"RF must be in the amplifier to trigger the RF sensing which causes the relays to close. How could RF not be on the NO relay contacts as they are closing and yet be on the RF sensing circuit that is
/archives//html/Amps/2004-11/msg00138.html (8,474 bytes)

300. Re: [Amps] Ten-Tec Centurion (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Thu, 11 Nov 2004 06:02:21 -0800
"Measuring the actual resistance of the parasitic suppressor resistors and eye-balling their appearance could eliminate parasitics as a possible scenario in under 2-minutes - if the soldering-iron is
/archives//html/Amps/2004-11/msg00142.html (10,259 bytes)

Current List: 281 - 300
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
This search system is powered by Namazu