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1. Re: [Amps] The quality of Chinese 811A and 572B (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Fri, 14 Nov 2008 11:15:02 +0000 (GMT); Hi Hsu I hope this helps: A "good" report": I used a pair of Chinese 572Bs in restoring a Heathkit SB200 for a friend. They worked extremely well, gave matching currents and full output as per s; /archives//html/Amps/2008-11/msg00155.html (9,977 bytes)
2. [Amps] 3 phase transformers on single phase - advice pls? (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Mon, 17 Nov 2008 15:49:37 +0000 (GMT); Guys I'm sure I should know the answer to this, but just can't seem to find anything in my literature or on the web. A friend (G7ODR, cc'd on this email) and I have scratched our heads, but the mo; /archives//html/Amps/2008-11/msg00172.html (7,667 bytes)
3. Re: [Amps] Wanted Henry 3K Premier Manual or Schematic (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Thu, 20 Nov 2008 10:25:54 +0000 (GMT); Try here: Boat Anchor Manual Archive. One of the most useful sites I've ever found! http://bama.sbc.edu/henry.htm There's a mirror site somewhere if that's a bit slow and some of the files are; /archives//html/Amps/2008-11/msg00186.html (8,552 bytes)
4. Re: [Amps] Wanted Henry 3K Premier Manual or Schematic (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Thu, 20 Nov 2008 10:30:55 +0000 (GMT); Oh, I forgot the most important thing I was going to say (doh! too much RF fried brain...): if anyone DOES have this particular model can you send it to the BAMA site owner, please? It makes a nice; /archives//html/Amps/2008-11/msg00187.html (9,083 bytes)
5. Re: [Amps] Wanted Henry 3K Premier Manual or Schematic (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Thu, 20 Nov 2008 14:22:53 +0000 (GMT); Sorry, Jim. My mistake. I did find a site that had most of the Henry amp manuals, I'll see if I can dig it out. In the meantime I have the manuals an schematics for the 8K Classic if anyone needs; /archives//html/Amps/2008-11/msg00190.html (9,791 bytes)
6. Re: [Amps] how to measure tank (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Sun, 30 Nov 2008 12:53:24 +0000 (GMT); I'd echo W6TC's good advice - a resistor of the same value as your calculated resonant load impedance or that off the data sheet for the drive and ht you're using. Just make sure it's a non-inductiv; /archives//html/Amps/2008-11/msg00253.html (10,119 bytes)
7. Re: [Amps] how to measure tank (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Sun, 30 Nov 2008 16:00:38 +0000 (GMT); All great advice! Hell, I wish there'd been an Amps Reflector when I built my first multiband HF amp. In fact, I wish there'd been an internet! :-) cheers Dave G0OIL One thing to keep in mind -; /archives//html/Amps/2008-11/msg00258.html (10,893 bytes)
8. Re: [Amps] Linear Amplifiers (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Sun, 30 Nov 2008 19:17:46 +0000 (GMT); Hi Eddy It's a nice amp though, wouldn't you say? Nice clean lines, decent looking components. It looks like quality construction. If someone commissioned me to build them an amp (and plenty ha; /archives//html/Amps/2008-11/msg00264.html (10,511 bytes)
9. Re: [Amps] Linear Amps (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Wed, 3 Dec 2008 00:12:38 +0000 (GMT); Thanks for that, Peter. I have a paper copy of AS53 (begged off Linda Lorenzo at Eimac years ago along with all the others) if anyone would like a scanned copy. cheers Dave G0OIL Eimac aslo pub; /archives//html/Amps/2008-12/msg00045.html (9,656 bytes)
10. Re: [Amps] Linear Amps (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Wed, 3 Dec 2008 00:53:28 +0000 (GMT); OK, OK, I stirred up a hornets' nest. Sorry. How long before we get onto "you're only a REAL carpenter if you hammer the nails in with your fist. Tools are for Cissies..." illogical extension. I; /archives//html/Amps/2008-12/msg00046.html (12,029 bytes)
11. Re: [Amps] Linear Amps (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Wed, 3 Dec 2008 10:50:02 +0000 (GMT); Jeff, We can all make our own Golden Age of Ham Radio - or whatever else. Success is a matter of attitude, isn't it? PS: Don't tell that to our socialist UK government - I'll be sent to the Gulag; /archives//html/Amps/2008-12/msg00062.html (11,879 bytes)
12. Re: [Amps] Linear Amps (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Wed, 3 Dec 2008 11:58:24 +0000 (GMT); of us who build stuff (any stuff) and what appears to be a generation of appliance operators. That's a given, but does it make a ham any better at emergency communications? Does it the ham a better; /archives//html/Amps/2008-12/msg00063.html (9,502 bytes)
13. Re: [Amps] field day - an illogical spinoff from Linear Amps (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Wed, 3 Dec 2008 16:07:43 +0000 (GMT); I proposed to my wife at VHF Field day 1992 - in a wind-swept field full of tents and antennas in the pouring rain at Flamborough Head on England's east coast. Happy memories! cheers Dave G0OIL; /archives//html/Amps/2008-12/msg00069.html (8,893 bytes)
14. Re: [Amps] Non Detergent motor oil for dummy loads????? (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Fri, 5 Dec 2008 20:02:20 +0000 (GMT); ATF! Now there's an idea. I'd often wondered what was best for this job. I think the main parameter is that it's not synthetic. I have to use non-synthetic oil for a couple of classic cars that; /archives//html/Amps/2008-12/msg00107.html (10,011 bytes)
15. Re: [Amps] rx noise? (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Sat, 6 Dec 2008 17:51:32 +0000 (GMT); That was going to be my suggestion if the HT is dropping a bit more than you'd expect. I had the same sort of thing without the HT drop when a painted but not earthed oil filled capacitor started lea; /archives//html/Amps/2008-12/msg00124.html (10,136 bytes)
16. Re: [Amps] WTB Henry Choke (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Sun, 14 Dec 2008 09:53:24 +0000 (GMT); I asked Ted Shannon at Henry Radio about a plate choke because I have spares for most of my homebrew 3CX3000 amp, but not a plate choke. Ted told me that Henry are no longer producing tube amps of th; /archives//html/Amps/2008-12/msg00221.html (10,866 bytes)
17. [Amps] Eimac AS53 newsletter and Ham Radio 'zine articles...... (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Fri, 19 Dec 2008 13:55:16 +0000 (GMT); Hi all Further to the thread that went around a few weeks ago, I now have a decent scanned copy of the Eimac AS53 Amateur Service Newsletter "Design Condiderations for Linear Amplifiers" which was se; /archives//html/Amps/2008-12/msg00264.html (7,156 bytes)
18. Re: [Amps] 3CX1500D7 quote (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Thu, 8 Jan 2009 11:14:30 +0000 (GMT); "Id take an 8877 over a Ruskie any day"I guess it depends on price. In my experience the original Russian tubes were pretty good, though obviously not as good as Eimac tubes. However, if you can bu; /archives//html/Amps/2009-01/msg00057.html (10,465 bytes)
19. Re: [Amps] 3CX1500D7 quote (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Thu, 8 Jan 2009 12:47:20 +0000 (GMT); Hi Peter Well I think you must have had more luck with the Chinese tubes than I have. Maybe they've improved. I find it's a very hit-and-miss process with Chinese tubes - either they're great or the; /archives//html/Amps/2009-01/msg00059.html (13,539 bytes)
20. [Amps] interesting piece of kit..... (score: 1): Author: DAVE WHITE <mausoptik@btinternet.com>; Date: Thu, 8 Jan 2009 15:56:11 +0000 (GMT); This looks like an interesting piece of kit: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&Item=330299130000&Category=1504 An "A43984 Henry RF Power Supply". It looks a bit of a "home brew" solutio; /archives//html/Amps/2009-01/msg00061.html (7,612 bytes)

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