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Total 477 documents matching your query.

201. Re: [Amps] Parasitic Resister Value (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 18 Aug 2012 10:28:48 +0800
Yeah. with the same sentiment, here, we say: "The best thing about xyz123 is that they don't make it anymore." 73, Alek VK6APK -- http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap Family Busin
/archives//html/Amps/2012-08/msg00301.html (10,170 bytes)

202. Re: [Amps] Available Class A in Yaesu (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 18 Aug 2012 19:37:19 +0800
G'day Charles. A small correction. Do not run a Mark V in class A at less than 75 Watts full power. The extra dissipation in the finals when you run class A at reduced power, tips the BLF147's over t
/archives//html/Amps/2012-08/msg00310.html (19,477 bytes)

203. Re: [Amps] Available Class A in Yaesu (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 18 Aug 2012 20:44:14 +0800
I don't know. You tell me. I just know that if you run the Mark V at less than 75 Watts (full power) out in Class A, things get really really hot and things let out all their smoke and things don't w
/archives//html/Amps/2012-08/msg00313.html (22,933 bytes)

204. Re: [Amps] $120 tube running a 1500 watt amplifier (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Mon, 20 Aug 2012 09:42:47 +0800
The GS23b is a coaxial base tube and as it is a vhf/uhf tube which is probably only ever used in cavity amplifiers, there are no sockets readily available. My guess is that is why they are so cheap.
/archives//html/Amps/2012-08/msg00331.html (9,734 bytes)

205. Re: [Amps] $120 tube running a 1500 watt amplifier (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Mon, 20 Aug 2012 17:00:15 +0800
Looks like VA3YP can make sockets for this tube. He makes those superbly crafted, GS35B and GI7B sockets. 73, Alek VK6APK -- http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap Family Businesses
/archives//html/Amps/2012-08/msg00337.html (9,564 bytes)

206. Re: [Amps] Can some explain this curious eBay auction (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 25 Aug 2012 10:57:10 +0800
16 grand, tax free, ain't bad money for a week of hard toil. :-) Alek. VK6APK -- From sunny Binningup, Western Australia. Family Businesses: Petkovic Air & Gas. petkovicag@bigpond.com SP Electrical.
/archives//html/Amps/2012-08/msg00398.html (9,461 bytes)

207. Re: [Amps] SOURCE OF TURNS COUNTER(S) - US SUPPLIERS (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 09 Sep 2012 11:12:50 +0800
Or from KE9PQ for a few dollars more but cheaper postage. Ebay item 390353582935 73, Alek. VK6APK <http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItemRevisionDetails&_trksid=p4340.l2569&rt=nc&item=39035
/archives//html/Amps/2012-09/msg00135.html (9,655 bytes)

208. Re: [Amps] MFJ products (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 11 Sep 2012 07:31:24 +0800
Tnx es 73, Gene May WB8WKU RECENT RELATED POSTINGS: Insects have antennae. Hams have antennas. 73, Alek. VK6APK On 9/10/2012 12:53 AM, Jerry Kaidor wrote: ** My impression of MFJ is that they do have
/archives//html/Amps/2012-09/msg00169.html (10,937 bytes)

209. Re: [Amps] MFJ products (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 11 Sep 2012 08:16:15 +0800
Oh dear. Now look what you've started. :-) 73, Alek. VK6APK http://en.wikipedia.org/wiki/Antenna_(biology) I would say strange, but acceptable description for one Antenna and not entirely wrong. I pr
/archives//html/Amps/2012-09/msg00175.html (13,066 bytes)

210. Re: [Amps] Chinese sockets (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 15 Sep 2012 11:59:35 +0800
They are superb! They are generally extremely overpriced on Ebay. Some people are making large profits on them. I get them for US$3.00 each for the normal ones and US$5.00 each for the gold plated on
/archives//html/Amps/2012-09/msg00244.html (8,271 bytes)

211. Re: [Amps] HFS-3000D (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 21 Sep 2012 16:10:21 +0800
Probably not as much as this guy is asking. These have been for sale for ever. http://www.ebay.com/itm/C88903-Lot-2-Plasma-Therm-HFS-3000D-RF-Generator-Eimac-5CX1500A-RF-Power-Pentode-/390410700168?p
/archives//html/Amps/2012-09/msg00265.html (8,358 bytes)

212. Re: [Amps] 300 W single band mobile amp needed (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 09 Oct 2012 05:35:52 +0800
Why bother building any amp? The guy wants to do it because HE thinks it would be fun. He did not ask anybody to judge him, his motives or any consequences of the project. 'Tis a brave man that asks
/archives//html/Amps/2012-10/msg00069.html (11,759 bytes)

213. Re: [Amps] AL-1500 filter caps (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 18 Oct 2012 16:09:52 +0800
That's not all. The 8 capacitors are running right on the edge as well. They are 450V rated and the plate voltage is 3600V. On days when the incoming mains is a little higher, it is not uncommon for
/archives//html/Amps/2012-10/msg00102.html (9,646 bytes)

214. Re: [Amps] Additional comments, re GU-74B/4CX800A (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 28 Oct 2012 05:28:30 +0800
GU91b. My Emtron DX-2 uses it. 73, Alek. VK6APK My QRO Parts Site: http://www.ur4ll.net Best regards, Alex, UR4LL KO70XG mailto:ur4ll@ur4ll.net _______________________________________________ Amps ma
/archives//html/Amps/2012-10/msg00187.html (9,402 bytes)

215. Re: [Amps] plate voltage meter shunt (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 04 Nov 2012 08:38:36 +0800
Here are the specs for Panasonic MOF resistors. I used the 5W variety in my amp project. They are rated at 500V. The 1/2W have a 300V rating and the 1W - 3W all have 350V. http://www.panasonic.com/in
/archives//html/Amps/2012-11/msg00031.html (9,098 bytes)

216. Re: [Amps] Modifying Acom 1000 for a different tube (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 13 Jan 2013 18:01:12 +0800
At $100.00 - $120.00 a pop from Dr Alex, they are still dirt cheap. http://www.ur4ll.net/ Get yourself 10 of them now, while you can and don't worry about shrinking supplies down the track. OR Send t
/archives//html/Amps/2013-01/msg00076.html (9,276 bytes)

217. Re: [Amps] 8877 won't load on 80M (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Mon, 28 Jan 2013 20:28:25 +0800
Yep. An air gap where it ain't supposed to be. Alek. VK6APK On 28/01/2013 9:02 AM, MU 4CX250B wrote: Sounds to me like there are two possibilities, One, your input network is miswired or not switchin
/archives//html/Amps/2013-01/msg00166.html (9,622 bytes)

218. Re: [Amps] Autek WM-1 calibrated... (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Mon, 04 Mar 2013 19:13:47 +0800
I've had a few of those before I got the LP-100A's and you are right. RF does get into them. Very simple fix though. Just wrap half a dozen turns of the power lead around an inch or so of 3/8" ferrit
/archives//html/Amps/2013-03/msg00040.html (8,953 bytes)

219. Re: [Amps] BAD DEAL STAY AWAY! / an alternative source (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Wed, 20 Mar 2013 13:55:40 +0800
Ditto. I would never consider going elsewhere. Ever. You can talk to Dr live, with video, on Skype and he will hold your items up in front of the camera and weigh them and give you the total quote, i
/archives//html/Amps/2013-03/msg00268.html (10,531 bytes)

220. Re: [Amps] Source for good 572B's tubes? (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 23 Mar 2013 09:45:07 +0800
Whoa! What are you doing to them? I have bought and sold over 200 of the Shuguang 572B tubes over the last 8 years and I have never had anybody tell me that they have worn them out. I have only ever
/archives//html/Amps/2013-03/msg00290.html (8,630 bytes)


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