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1. [Amps] WLW 500 kW transmitter (score: 1): Author: Xmitters@aol.com; Date: Tue, 16 May 2006 18:20:16 EDT; Hello: I'm doing a mathematical analysis on the RF PA of the WLW 500 kW transmitter, which consists of three 167 kW RF amplifiers into a combiner. The RF amplifiers are RF transformer coupled; the pr; /archives//html/Amps/2006-05/msg00152.html (8,151 bytes)
2. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 18:32:48 -0400; Jeff, If you get the chance, take the tour as I did. You'll be impressed when you see the modulation transformer, it's a monster. I know the very coils your talking about that have the shields in bet; /archives//html/Amps/2006-05/msg00154.html (10,267 bytes)
3. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: Xmitters@aol.com; Date: Tue, 16 May 2006 19:21:56 EDT; << I think I have some info here in a transformer book, and will try to locate the one it's in. To my opinion, those shields will have to be taken into account on the formulas also. Oh by the way, be; /archives//html/Amps/2006-05/msg00159.html (8,690 bytes)
4. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 19:42:49 -0400; Jeff, I'm glad the book work was dug up. Was the Harris manuals the originals that were supposed to be missing, or copies that Harris had when it was originally built? What I had heard was the manual; /archives//html/Amps/2006-05/msg00160.html (10,677 bytes)
5. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Wed, 17 May 2006 02:09:31 +0200; I do agree, At present I am in the process of refurbishing a russian military autotune amp 1,5-26MHz with GU78b. I just started with cleaning, but I already ha a look at the output network and that c; /archives//html/Amps/2006-05/msg00161.html (8,098 bytes)
6. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 16 May 2006 20:39:09 -0400; For you WLW fans, I would like to share a webpage that my friend WA2WHV created: http://www.j-hawkins.com/wlw.shtml 73, Ken W2DTC _______________________________________________ Amps mailing list Amp; /archives//html/Amps/2006-05/msg00164.html (7,261 bytes)
7. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 21:08:09 -0400; Jeff, The photo I'm looking at here shows 5 turns and 3 turns of copper tubing. The photo is of the link-coupled output coils and the Faraday shield for the 500 kW monster. Also, I believe the missin; /archives//html/Amps/2006-05/msg00165.html (10,967 bytes)
8. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 21:30:22 -0400; Ken, I see he has another page about the VOA Bethany site. The link to it is below; http://www.j-hawkins.com/voaohio.html Best, Will ** REPLY SEPARATOR ** On 5/16/06 at 8:39 PM kenw2dtc wrote: ______; /archives//html/Amps/2006-05/msg00166.html (8,619 bytes)
9. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Tue, 16 May 2006 21:39:17 -0400; Thanks Will, Yes, I culled out just the WLW pages to answer the mail. Jim has created a wonderful website on many major transmitting stations. I reference his main page here for those on this list th; /archives//html/Amps/2006-05/msg00167.html (8,989 bytes)
10. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: Xmitters@aol.com; Date: Tue, 16 May 2006 22:02:36 EDT; << eff, I'm glad the book work was dug up. Was the Harris manuals the originals that were supposed to be missing, or copies that Harris had when it was originally built? What I had heard was the manu; /archives//html/Amps/2006-05/msg00169.html (9,786 bytes)
11. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "crawfish" <crawfish@surfmore.net>; Date: Sun, 21 May 2006 09:11:43 -0500; I went by the old VOA site. It is now a county park. Also drove by WLW transmitter. It is right in downtown Mason.Wish my camera had been working a main ______________________________________________; /archives//html/Amps/2006-05/msg00265.html (10,542 bytes)
12. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "kenw2dtc" <kenw2dtc@comcast.net>; Date: Sun, 21 May 2006 10:43:09 -0400; Joe, In your short drive you passed a lot of history. Yep, next time you will probably have your camera at the ready. 73, Ken W2DTC ______________________________________ I went by the old VOA site.; /archives//html/Amps/2006-05/msg00266.html (8,430 bytes)
13. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "crawfish" <crawfish@surfmore.net>; Date: Sun, 21 May 2006 13:20:27 -0500; Last time I was by there, VOA Bethany was still standing(1982). A video of the WLW site would be better than still pictures. It was amazing to see this behemoth tower standing so close to the road(al; /archives//html/Amps/2006-05/msg00267.html (9,475 bytes)
14. Re: [Amps] WLW 500 kW transmitter (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Sun, 21 May 2006 15:21:49 -0700; Our EE class (from the University of Cincinnati) was lucky enough to tour the site during our senior year (the winter of '63-'64). We had just finished our course in Transmission Lines a few months e; /archives//html/Amps/2006-05/msg00270.html (9,241 bytes)

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