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Total 5 documents matching your query.

1. Topband: Amplifier Help (score: 1)
Author: Niko Cimbur <ac6dd@yahoo.com>
Date: Tue, 16 Feb 2010 19:51:22 -0800 (PST)
I first would like to mention that my technical expertise is very limited, and sometimes think I am seeing double. http://www.youtube.com/watch?v=NHdTqnu3sCo&feature=related   (4 minute mark), http:/
/archives//html/Topband/2010-02/msg00149.html (7,649 bytes)

2. Re: Topband: Amplifier Help (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Wed, 17 Feb 2010 17:12:26 -0500
Niko, I have done this with a two element array and it worked great. Phasing control is much easier at low power levels, i.e. ahead of the amplifiers. You have to ensure that each antenna is matched
/archives//html/Topband/2010-02/msg00155.html (7,094 bytes)

3. Re: Topband: Amplifier Help (score: 1)
Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Wed, 17 Feb 2010 20:54:15 -0800
How did you determine it worked great? In most two element arrays the impedance of the rear element is virtually a short circuit. The second amplifier goes to waste as it cannot deliver any significa
/archives//html/Topband/2010-02/msg00156.html (8,131 bytes)

4. Re: Topband: Amplifier Help (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Thu, 18 Feb 2010 12:13:13 -0500
Rick, The elements were 100 m long V beams that I used on 80 and 40 meters. Each element had its dedicated auto tuner (and ballun). (This was when I was in AZ and had the space). I had two SG-500 500
/archives//html/Topband/2010-02/msg00160.html (9,066 bytes)

5. Re: Topband: Amplifier Help (score: 1)
Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Thu, 18 Feb 2010 09:20:44 -0800
I have a complete Intech COM1000 amplifier, which Intech rates at 1000W by the way, which make the modules 250W each. I push it to 1500W with a little bit of compression. By the way, I have posted th
/archives//html/Topband/2010-02/msg00161.html (9,819 bytes)


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