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241. Re: [Amps] [BULK]Re: [BULK]Re: cathode to ground in tetrode amp (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Mon, 30 Jan 2006 21:17:02 -0500
Joe, The original design (black drawing) came from a Russian website or some place like that as I remember seeing it elsewhere. It was a working amp and can see easily what they done. Only thing thou
/archives//html/Amps/2006-01/msg00749.html (13,360 bytes)

242. Re: [Amps] cathode to ground in tetrode amp (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Tue, 31 Jan 2006 00:08:29 -0500
Jim, That's what it's for but it don't look to be the right value. The original dwg (black dwg) looks to be a 15K 20W. Others I've seen though use a little more resistance than that if I recall. Abou
/archives//html/Amps/2006-01/msg00753.html (11,366 bytes)

243. Re: [Amps] AC to DC (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Tue, 31 Jan 2006 00:13:29 -0500
I didn't have time today, but try to tomorrow, to post what Struthers & Dun says. I have a book here they wrote on relay engineering which discuss this. I promised the original poster I'd do it, but
/archives//html/Amps/2006-01/msg00754.html (9,633 bytes)

244. [Amps] AC-DC Relay Coils (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Tue, 31 Jan 2006 22:32:49 -0500
Since what come on TV at 9:00 tonight, I have better time to spend than listen to that BS, so I figured I'd do the post I promised about the voltage interchangability of AC and DC relay coils. From;
/archives//html/Amps/2006-01/msg00782.html (8,135 bytes)

245. [Amps] Queation on toroid core materials (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Wed, 01 Feb 2006 15:24:54 -0500
All, What has been your experience in the wide-band transformer core material types available for use on 160-10 meters in both Ferrite, and Iron Powder, or the types recommended to use? Available mat
/archives//html/Amps/2006-02/msg00015.html (7,792 bytes)

246. Re: [Amps] Queation on toroid core materials (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 11:15:19 -0500
Rich, ** REPLY SEPARATOR ** That;s what I thought too until the Guys at Palomar Engineers mentioned using 61. Below is from Amidon; Material 61 (&micro;i = 125): Offers moderate temperature stability
/archives//html/Amps/2006-02/msg00023.html (11,279 bytes)

247. Re: [Amps] Amp for sale on eBay (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 17:50:38 -0500
One word, LMDAO! Shakes head, Will PS, I knew Ed Dulaney who made those D&A's before he died. He really was a good guy and who encouraged me to go into electronics. That was a side business for him t
/archives//html/Amps/2006-02/msg00031.html (8,637 bytes)

248. Re: [Amps] Amp for sale on eBay (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 18:08:58 -0500
ROFLMAO! Best, Will ** REPLY SEPARATOR ** _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2006-02/msg00033.html (11,182 bytes)

249. Re: [Amps] Amp for sale on eBay (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 18:42:14 -0500
Alek, It had 4 drivers and 4 finals. The drivers were something like used as vertical output tubes, I cant recall the number, 6JM6 maybe? The finals were 6LQ6 horizontal sweep tubes. The other tube w
/archives//html/Amps/2006-02/msg00035.html (8,912 bytes)

250. Re: [Amps] Amp for sale on eBay (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 19:23:14 -0500
Cliff, There were two companies making one sweep tube which was Svetlana, and EI a Yugoslavian factory. That tube was the 6KG6A or EL-519. There's is one Chinese company that told me they could make
/archives//html/Amps/2006-02/msg00039.html (12,961 bytes)

251. Re: [Amps] Amp for sale on eBay (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 19:29:45 -0500
Peter, The old D&A's had several faults. First, was a low plate voltage (about 750 VDC). Second, he had wire run under the chassis for miles. He tried to mount the driver tank circuit at the front of
/archives//html/Amps/2006-02/msg00040.html (11,832 bytes)

252. Re: [Amps] Super buy on the Bay! (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 23:17:59 -0500
Mark, Thanks, I knew I was kind of close, it's been a while since I was in one of those. They mention 450 watts with a 2517. The 2517 is not a stock CB, it was an export with a higher output power of
/archives//html/Amps/2006-02/msg00046.html (10,455 bytes)

253. Re: [Amps] Silicone Oil (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Thu, 02 Feb 2006 23:20:06 -0500
Jerry, If you have a local transformer or motor shop, transformer oil works good too and is cheaper. Some have used straight mineral oil from the drug store. Best, Will ** REPLY SEPARATOR ** On 2/2/0
/archives//html/Amps/2006-02/msg00047.html (7,686 bytes)

254. Re: [Amps] Queation on toroid core materials (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 03 Feb 2006 15:25:12 -0500
Rich, I went and read some of the book "Practical RF Communications Data" by Doug Demaw on this. Below is a quote; "The type of core material used will depend to a great extent on the required bandwi
/archives//html/Amps/2006-02/msg00060.html (14,797 bytes)

255. [Amps] Toroid for RF power meter (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 03 Feb 2006 15:59:12 -0500
All, I found this while researching toroids. If your building a RF power meter (wattmeter or SWR meter), Collins design, and want to use a transformer in it here's the following. For use from 1.5 to
/archives//html/Amps/2006-02/msg00061.html (7,974 bytes)

256. Re: [Amps] Toroid for RF power meter (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 03 Feb 2006 16:05:49 -0500
Forgot this. The meter is a 200 uA movement. The cal resistors are two 25K pots. The filters off the RF chokes are .01 uF. The caps off the diodes cathodes to ground are 330 pF silver mica. The two 1
/archives//html/Amps/2006-02/msg00062.html (9,019 bytes)

257. Re: [Amps] Queation on toroid core materials (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 03 Feb 2006 17:40:57 -0500
I also had a look at a book I about forgot I had named Ferromagnetic-Core Design & Application Handbook, also by Doug Demaw. The part about 61 material came up one time in a conversation with a tech
/archives//html/Amps/2006-02/msg00067.html (17,650 bytes)

258. [Amps] Another unbelieveable ebay sale. (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 03 Feb 2006 21:42:07 -0500
I was tracking this older Simpson 313 meter and thought about bidding until I seen what happened. I can't believe what it sold for. Link; http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=75856
/archives//html/Amps/2006-02/msg00070.html (6,662 bytes)

259. Re: [Amps] Needed: Easy to Wind Low Value Meter Shunt Wire (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Fri, 03 Feb 2006 23:58:01 -0500
Ron, Yes there is as I just saw them in Mouser. I forget the manufacturer but they'll be under resistors. Shunts like a 0.1 ohm or lower are hard to make and be accurate. Best, Will ** REPLY SEPARATO
/archives//html/Amps/2006-02/msg00073.html (8,758 bytes)

260. Re: [Amps] Needed: Easy to Wind Low Value Meter Shunt Wire (score: 1)
Author: "Will Matney" <craxd1@verizon.net>
Date: Sat, 04 Feb 2006 00:55:21 -0500
Henry, Believe it or not, that was the way they did on one of those Radio Shack meters similar to a Simpson 260. The shunt was a bent piece of nichrome wire around the inside of the meter. Towards th
/archives//html/Amps/2006-02/msg00075.html (10,767 bytes)

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