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Total 1109 documents matching your query.

181. Re: [Amps] 1/4" shaft connectors (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Fri, 26 Sep 2008 20:33:21 -0400
I just replaced the plastic window in a small radio. It's about 6" wide by 3/4" high. It has 3 small words stenciled on it with one 1/8" hole and a half moon cutout about 1/2" across. List price was
/archives//html/Amps/2008-09/msg00217.html (8,960 bytes)

182. Re: [Amps] 1/4" shaft connectors (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Sat, 27 Sep 2008 00:55:18 -0400
Man after my own heart. I've been working toward a good lathe and floor mill plus the accessories. Just think of the money I can save. Just the other day I needed a tool to roll the ends of copper tu
/archives//html/Amps/2008-09/msg00226.html (10,442 bytes)

183. Re: [Amps] Sockets and chimney's for GS35B (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Fri, 24 Oct 2008 05:11:37 -0400
You're going to run TWO of those things? <:-)) The price is right and they are rugged. Heavy enough for ballast too. <:-)) 73 Roger (K8RI) _______________________________________________ Amps mailing
/archives//html/Amps/2008-10/msg00104.html (8,029 bytes)

184. Re: [Amps] Sockets and chimney's for GS35B (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Fri, 24 Oct 2008 05:12:19 -0400
You're going to run TWO of those things? <:-)) The price is right and they are rugged. Heavy enough for ballast too. <:-)) 73 Roger (K8RI) _______________________________________________ Amps mailing
/archives//html/Amps/2008-10/msg00105.html (8,061 bytes)

185. Re: [Amps] Henry Biasing Diode (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Sun, 26 Oct 2008 12:30:09 -0400
Have you tried calling Henry Radio? They had one for a 2K4 a couple years ago, well after they'd quite making tube amps. Roger (K8RI) _______________________________________________ Amps mailing list
/archives//html/Amps/2008-10/msg00115.html (7,195 bytes)

186. Re: [Amps] Semtech diode (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Mon, 27 Oct 2008 22:52:15 -0400
I thought that was a "Die" or do they just refer to the CPU chip as a die. Back when they were making those diodes the largest Silicon wafer was maybe a couple of inches across. About 35 years ago th
/archives//html/Amps/2008-10/msg00129.html (10,806 bytes)

187. Re: [Amps] coax length between transceiver and amplifier (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Mon, 03 Nov 2008 22:51:45 -0500
What? You mean all that work I put into 75 and 40 won't help? The background is finally down to about S2 or 3. <:-)) Only 2 1/2 more S units to go. Of course if you operate AU on 6 it makes the diffe
/archives//html/Amps/2008-11/msg00023.html (9,947 bytes)

188. Re: [Amps] SB-220 saga continues (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Sun, 09 Nov 2008 00:20:01 -0500
I'm not familiar with the 220 keying, but assume it's a relay that relies on an external contact to provide contact closure for a supply in the amp. Many moons ago, I hooked my 756 Pro to my Henry 2K
/archives//html/Amps/2008-11/msg00066.html (9,654 bytes)

189. Re: [Amps] SB-220 saga continues (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Sun, 09 Nov 2008 00:33:40 -0500
Please do not cross post between reflectors. Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2008-11/msg00067.html (8,465 bytes)

190. Re: [Amps] QRO Heat management (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Mon, 10 Nov 2008 18:33:16 -0500
Ahhh... I don't remember any PEP limit on input. Just 1KW average based on a plate current meter with a 1/4 second time constant. My voice characteristics are such that I used to get over 2KW PEP out
/archives//html/Amps/2008-11/msg00111.html (12,600 bytes)

191. Re: [Amps] QRO Heat management (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Mon, 10 Nov 2008 21:36:06 -0500
But prior to the clarification the reg was only 1 KW average input. Even with the 1/4 second time constant I don't remember the reg stating any PEP limit. Right. I ran mine at "tilt" and never had a
/archives//html/Amps/2008-11/msg00115.html (17,085 bytes)

192. Re: [Amps] help with corona discharge (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Wed, 12 Nov 2008 23:36:34 -0500
Mine was a 6C21 with a passive grid. On the first tube I said "Hello Test" and blew the plate right out of it. Of course they were only $5 each back then. Even with all those resistors on the grid I
/archives//html/Amps/2008-11/msg00145.html (9,618 bytes)

193. Re: [Amps] Alpha 76CA (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Mon, 01 Dec 2008 22:43:05 -0500
I know this is old but I've been going back through the posts trying to find the one where I mentioned wanting to build up a 4CX2500. Man, if you find an extra without tubes, send it my way. I have s
/archives//html/Amps/2008-12/msg00026.html (8,819 bytes)

194. Re: [Amps] Linear Amps (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Tue, 02 Dec 2008 21:14:13 -0500
That's a given, but does it make a ham any better at emergency communications? Does it the ham a better character? Amateur Radio is a diverse hobby/service with a vast array of capabilities and servi
/archives//html/Amps/2008-12/msg00048.html (16,519 bytes)

195. Re: [Amps] Linear Amps (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Tue, 02 Dec 2008 22:18:10 -0500
<:-)) Sounds similar to Westinghouse P2000s we had at work. You had to punch in the machine code loader from the front panel push buttons which took about an hour and then the ultra modern paper tape
/archives//html/Amps/2008-12/msg00053.html (11,505 bytes)

196. Re: [Amps] Linear Amps (score: 1)
Author: "Roger (K8RI)" <sub1@rogerhalstead.com>
Date: Wed, 03 Dec 2008 01:20:52 -0500
As would I... If you have a place to post it most of us could just download it. 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.cont
/archives//html/Amps/2008-12/msg00061.html (9,788 bytes)

197. Re: [Amps] Inductor Software? (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Thu, 04 Dec 2008 18:43:03 -0500
This it the kind of thing I'd like to see on the reflector. Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/list
/archives//html/Amps/2008-12/msg00094.html (8,526 bytes)

198. Re: [Amps] Inductor Software? (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 05 Dec 2008 02:08:11 -0500
As this likely is going to be used on a band with a relatively wide range, say 40, 75, or even the 160 I was going to ask, what ever happened to the good old formula for a solenoid coil. You don't ne
/archives//html/Amps/2008-12/msg00101.html (9,090 bytes)

199. [Amps] Use Aviation mineral oil (WAS Re: Non Detergent motor oil for dummy loads) (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 05 Dec 2008 16:18:11 -0500
I doubt that it really matters, nor do I think the sulfur in some oils will make much of a difference unless the DL is operated at elevated temperatures for some time. Typically the problem with thos
/archives//html/Amps/2008-12/msg00114.html (11,065 bytes)

200. Re: [Amps] amp p/s metering (score: 1)
Author: Roger <sub1@rogerhalstead.com>
Date: Fri, 19 Dec 2008 21:51:19 -0500
There yah go. Put a multiplier string in parallel with the bleeder string. Using a calibration pot and zero center meter between the strings. Initially set it to zero. Call that the "condition" meter
/archives//html/Amps/2008-12/msg00273.html (9,913 bytes)

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