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181. Re: [Amps] More Capacitors vs LC filters (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 20 Apr 2012 06:22:45 +0800
Very interesting Jim. I get very nervous having my Ameritron AL-1500 sitting here less than 2 ft away from me, especially at start up time. It has 8 x 450V elecrolytics in series and the plate voltag
/archives//html/Amps/2012-04/msg00188.html (8,856 bytes)

182. Re: [Amps] More Capacitors vs LC filters (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 20 Apr 2012 07:36:36 +0800
I think I'm the 3rd or 4th owner of the amp and I'm slowly "going through it". I have some 500V/105°C capacitors on order to replace the 450V ones. I think the existing ones are 220uF and the new one
/archives//html/Amps/2012-04/msg00192.html (13,022 bytes)

183. Re: [Amps] More Capacitors vs LC filters (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 20 Apr 2012 07:37:52 +0800
Yep. That's the only comfort I have. Hi hi. Alek. VK6APK -- From sunny Binningup, Western Australia. http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap == Email scanned by PC Tools - No viruses
/archives//html/Amps/2012-04/msg00193.html (8,939 bytes)

184. Re: [Amps] More Capacitors vs LC filters (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 20 Apr 2012 08:32:30 +0800
"Aha! The old money in the bank from the mug punters trick." (Maxwell Smart) Guess I better get that heater voltage measured and set sooner rather than later. Hey, by the way, what is the plate volta
/archives//html/Amps/2012-04/msg00197.html (14,699 bytes)

185. Re: [Amps] OM Power Amps (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 29 Apr 2012 06:26:01 +0800
A new amp is always exciting stuff Don. Good luck with it. Make sure you grab a lifetime supply of spare tubes as well. They are no longer in production and they are getting very expensive and extrem
/archives//html/Amps/2012-04/msg00251.html (9,590 bytes)

186. Re: [Amps] Fwd: Re: soldering vs crimping (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 04 May 2012 06:32:44 +0800
Bad move. Don't do it. By using the tubing cutter, you are certainly doing a neat job but you are deforming that soldered braid and pushing it, as a sharp edge, inwards, through the dielectric toward
/archives//html/Amps/2012-05/msg00135.html (11,961 bytes)

187. Re: [Amps] 4-400A (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 22 May 2012 07:07:26 +0800
http://swap.qth.com/c_tubes.php Heaps for sale there. 73, Alek VK6APK -- http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap == Email scanned by PC Tools - No viruses or spyware found. (Email Gu
/archives//html/Amps/2012-05/msg00311.html (7,675 bytes)

188. Re: [Amps] Dummy Load Blues (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 15 Jun 2012 08:00:34 +0800
I bought mine here. http://www.ebay.com.au/sch/rfandmicrowaves/m.html?_nkw=dummy+load&_sacat=0&_odkw=&_osacat=0&_trksid=p3911.c0.m270.l1313 73, Alek. VK6APK -- From sunny Binningup, Western Australia
/archives//html/Amps/2012-06/msg00118.html (13,677 bytes)

189. Re: [Amps] Acoustic Noise Comparison (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 23 Jun 2012 11:23:47 +0800
The Alpha is obviously male. None of that stuff would have made any difference if it wasn't. 73, Alek, VK6APK _______________________________________________ Amps mailing list Amps@contesting.com htt
/archives//html/Amps/2012-06/msg00378.html (9,203 bytes)

190. Re: [Amps] 3CX1500A7/8877 vs el cheapo GS-35B (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Wed, 01 Aug 2012 09:33:00 +0800
If you grab a GS35b or GS31b and have a close look at the way it is constructed, you'll see that the use of a soldering iron on the heater/cathode connection points will not damage the tube or the se
/archives//html/Amps/2012-07/msg00465.html (10,648 bytes)

191. Re: [Amps] 3CX1500A7/8877 vs el cheapo GS-35B (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Wed, 01 Aug 2012 09:48:54 +0800
You're right. It was Bill what said it, I fink. Anyway, I have the VE3 sockets and I'll probably use them in preference to anything else if/when I ever use that type of tube. The picture illustrates
/archives//html/Amps/2012-07/msg00468.html (13,113 bytes)

192. Re: [Amps] 3CX1500A vs el cheapo GS-35B (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 02 Aug 2012 17:31:30 +0800
I just know him as a nice old fart who has built heaps and heaps of amplifiers to a standard and finish that the rest of can only dream about. Seriously, If you wanna get an amplifier built, send the
/archives//html/Amps/2012-08/msg00038.html (10,415 bytes)

193. Re: [Amps] 3CX1500A7 pulled from MRI (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 03 Aug 2012 10:50:45 +0800
None in this corner of the Third World. The people in charge of these machines would have heard somewhere, that the tubes contained Beryllium. That would immediately class them as hazardous waste, to
/archives//html/Amps/2012-08/msg00067.html (9,217 bytes)

194. Re: [Amps] opps (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 09 Aug 2012 19:08:18 +0800
Take me to your meter/s? Plus. The plate choke will most certainly not be subject to parasitics. Don't annoy him with technically correct details though. He'll report you to Ebay and you will rue the
/archives//html/Amps/2012-08/msg00146.html (8,219 bytes)

195. Re: [Amps] K3 spike problem (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 16 Aug 2012 17:16:09 +0800
Why are you all trying to tell Charles that the K3 has no overshoot when he has told you that it does? He has described the exact conditions under which it does it and he has stated that the radio is
/archives//html/Amps/2012-08/msg00240.html (10,133 bytes)

196. Re: [Amps] K3 spike problem (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 16 Aug 2012 19:36:13 +0800
G'day Bob. On the contrary. Several posters stated or implied that K3s did not overshoot at all. A couple of posts blamed Charles for the problem in that he did not do the proper calibration or align
/archives//html/Amps/2012-08/msg00243.html (16,005 bytes)

197. Re: [Amps] K3 spike problem (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 16 Aug 2012 20:32:56 +0800
No worries Bob. Cheers from cool sunny Perth. Alek. VK6APK -- http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap Family Businesses: Petkovic Air & Gas. petkovicag@bigpond.com SP Electrical. www
/archives//html/Amps/2012-08/msg00246.html (23,650 bytes)

198. Re: [Amps] K3 spike problem (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 16 Aug 2012 20:49:09 +0800
Ha ha. I've heard it all now. So the factory cannot produce a radio which anybody, anywhere can buy and take out of the box and get on the air straight away. The owner has to fix it first! . . . . Af
/archives//html/Amps/2012-08/msg00247.html (13,341 bytes)

199. Re: [Amps] Parasitics Resistor Value (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 18 Aug 2012 08:09:18 +0800
That unit is not familiar to us down under. Is this it? Ebay: Item number: 150876578977 73, Alek. VK6APK -- http://www.qrz.com/db/vk6apk http://www.qrz.com/db/vk6ap Family Businesses: Petkovic Air &
/archives//html/Amps/2012-08/msg00294.html (9,646 bytes)

200. Re: [Amps] Parasitics Resistor Value (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 18 Aug 2012 09:12:35 +0800
Nah, as much as I'd love it, I have always been happy with my mains powered Leader model which uses the 6CW4 Nuvistor. Besides, the 59 probably runs on 115V only. Not a huge problem, just less conven
/archives//html/Amps/2012-08/msg00297.html (12,697 bytes)

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