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Total 477 documents matching your query.

361. Re: [Amps] new amp race / antenna take-off angle (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 23 May 2017 20:20:50 +0800
Not in this part of there world, there ain't no 10m limit. Most suburban masts are around 15m to 20m high. All applications are assessed on an individual basis. There are moves afoot to have a 10m mi
/archives//html/Amps/2017-05/msg00254.html (9,881 bytes)

362. Re: [Amps] new amp race (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Wed, 24 May 2017 10:20:18 +0800
Don't forget to smear some aluminium jointing compound in the joint between the grid flange of the YC156/YC179 and the raw aluminium chassis. Electrolysis/corrosion sets in extremely quickly if you d
/archives//html/Amps/2017-05/msg00273.html (13,018 bytes)

363. Re: [Amps] Clipperton L soft (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 21 Jul 2017 11:28:36 +0800
It is plausible that the previous owner has changed from a doubler to full wave rectifier. From the Clipperton L manual, the anode voltages, at idle, are 2700V for the high and 1800V for the low. If
/archives//html/Amps/2017-07/msg00072.html (11,286 bytes)

364. Re: [Amps] Clipperton L soft (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 21 Jul 2017 11:30:23 +0800
Yeah. That's probably more plausible than the rectifier rewire theory. 73, Alek. VK6APK RussKW6T Hi all, Just trying to diagnose a weak Clip L. Here's what I see; On CW, the Vp meter shows 700 volts.
/archives//html/Amps/2017-07/msg00073.html (9,994 bytes)

365. Re: [Amps] Clipperton L (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 22 Jul 2017 07:33:20 +0800
Yes. The HV probe is the first thing. Then, change out those metering resistors as well, while you're at it. Make up the 3 megohms with a string of smaller value, appropriately rated resistors. It ma
/archives//html/Amps/2017-07/msg00080.html (9,697 bytes)

366. Re: [Amps] Machlett 3-500z (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 25 Jul 2017 07:22:04 +0800
Yep. There is nothing wrong with any of the 3-500ZG tubes. If you buy enough of them from the factory, they'll stamp whatever brand you like on them. They are as good as anyone else has ever made, wi
/archives//html/Amps/2017-07/msg00099.html (13,793 bytes)

367. Re: [Amps] peak voltage rating for load cap (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sat, 19 Aug 2017 19:42:21 +0800
I always thought, that for the loading capacitor, you just use the old "Power = V squared over R" formula. You know R is 50 Ohms, and you supposedly know the power, so you can work out the voltage fr
/archives//html/Amps/2017-08/msg00020.html (8,859 bytes)

368. Re: [Amps] peak voltage rating for load cap (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 20 Aug 2017 07:17:41 +0800
Ha! You're right. Sorry 'bout that. I'm a quick reader. Not a good reader. :-) 73, Alek. VK6APK Vic 4X6GP On 19 Aug 2017, at 16:29, Peter Voelpel<dj7ww@t-online.de> wrote: Letīs say the SWR is 3 then
/archives//html/Amps/2017-08/msg00031.html (11,153 bytes)

369. Re: [Amps] Amps Digest, Vol 178, Issue 1 (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 03 Oct 2017 11:10:34 +0800
Well, I would answer that by asking you the question. What would you do, if you were wearing Mike's shoes? I think Mike was remarkably civil. I would have let fly and I would now be banned from posti
/archives//html/Amps/2017-10/msg00006.html (9,113 bytes)

370. Re: [Amps] FW: Status of Alpha (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Tue, 03 Oct 2017 15:41:24 +0800
The first link works very well here in Australia. Using Firefox 32bit and Windows 7. Alek. VK6APK Just down the Google search list is www.alpharadioproducts.com which shows some watt meters, and brie
/archives//html/Amps/2017-10/msg00012.html (10,261 bytes)

371. Re: [Amps] Pure signal vs AMPs idle curent (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 08 Dec 2017 20:48:45 +0800
One day! Ha ha. Anan, that's my dream. 73, Alek. VK6APK PS: I won't be bothered with measuring. I'll be too busy drooling. On 8/12/2017 8:03 PM, Jim Thomson wrote: For those of you folks that have pr
/archives//html/Amps/2017-12/msg00058.html (8,243 bytes)

372. Re: [Amps] Stuck setscrews (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Fri, 08 Dec 2017 20:50:01 +0800
Angle grinder or oxy torch. The motors are connected to the coil and capacitor with semi-flexible insulated couplings that are made out of some kind of plastic strip. The plastic on the one for the c
/archives//html/Amps/2017-12/msg00059.html (8,412 bytes)

373. Re: [Amps] Life of tubes in ham service (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 28 Dec 2017 10:42:22 +0800
If the HV hasnt been recapped with over 25-30 uF total that transformer or winding is also a good inrush limiter also offering switch protection.. If spending money is of no concern then by all means
/archives//html/Amps/2017-12/msg00176.html (15,711 bytes)

374. Re: [Amps] Life of tubes in ham service (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 28 Dec 2017 11:02:19 +0800
Yes, they probably did but no, these were definitely Russian tubes. I got to see the new ones and the pulls. 73 Jim W7RY If the HV hasnt been recapped with over 25-30 uF total that transformer or win
/archives//html/Amps/2017-12/msg00181.html (16,404 bytes)

375. Re: [Amps] Life of tubes in ham service (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 28 Dec 2017 11:03:43 +0800
Indeed, they were them. Carl If the HV hasnt been recapped with over 25-30 uF total that transformer or winding is also a good inrush limiter also offering switch protection.. If spending money is of
/archives//html/Amps/2017-12/msg00182.html (16,989 bytes)

376. Re: [Amps] Narcissism everywhere (almost) (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Wed, 03 Jan 2018 08:06:35 +0800
Well, you have me bamboozled. I'd have to look it up to see what the word means. If I was interested enough, that is. It's all way over my head. I must be simple. HNY, Alek VK6APK On 3/01/2018 2:59 A
/archives//html/Amps/2018-01/msg00023.html (10,465 bytes)

377. Re: [Amps] titan 425 dimming, drop in power, hv (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 07 Jan 2018 08:39:35 +0800
Here's a total stab in the dark. Does it have a step start resistor/relay setup? If so, the relay may not be coming in or the contacts ar not making, which will leave the resistor in circuit. When yo
/archives//html/Amps/2018-01/msg00057.html (9,083 bytes)

378. Re: [Amps] Commander HF 2500 (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Thu, 25 Jan 2018 07:15:40 +0800
No. Not necessarily but what is critically important, is to check the value of the resistors across each of the filter caps. My friend, K4HB, had a filter cap erupt and burn out the section of board
/archives//html/Amps/2018-01/msg00136.html (10,487 bytes)

379. Re: [Amps] Rick Measures AG6K (SK) (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Sun, 18 Mar 2018 07:35:40 +0800
Rich was a very kind gentleman. I'm saddened by the news. Alek, VK6APK On 17/03/2018 9:48 PM, gudguyham-- via Amps wrote: Sorry to say that Rick, AG6K passed away on January 4,2018. He was a very lon
/archives//html/Amps/2018-03/msg00053.html (8,623 bytes)

380. Re: [Amps] Alpha 77D anode choke swap? (score: 1)
Author: Alek Petkovic <vk6apk@bigpond.com>
Date: Wed, 11 Apr 2018 12:06:31 +0800
I've done a few conversions and new builds with that choke, without any problems so far. Go for it. 73, Alek. VK6APK/VK6AP About to swap the anode choke in my Alpha 77D for the Ameritron RFC in the h
/archives//html/Amps/2018-04/msg00020.html (8,944 bytes)


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