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Re: LF: ref LD30

To: [email protected]
Subject: Re: LF: ref LD30
From: Stefan Schäfer <[email protected]>
Date: Sat, 15 May 2010 13:52:59 +0200
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Mal,

I assume you know your antenna capacitance so you can easily calculate your needed inductance. Or, if you know your L for 137kHz, it will be about (137/9)^2 at 9 kHz!

Stefan/DK7FC


Am 14.05.2010 20:35, schrieb mal hamilton:
    Well, I am getting 15v sine wave into a 50 ohm DL with the LD30, this looks promising. All I need now is a 500W audio amp suitably matched into 50 ohms.
I prefer to keep a standard 50 ohm system for measuring purposesd.
or
I could change the 15v to sq wave and build a class D fet amp, maybe a better approach.
If I proceed the Ant system would consist of 3 x inv L antennas in parallel, height about 100 ft and each one about 500 ft horizontal.
Will have to calculate the loading coil L maybe less than 1 H with some luck
This is just a proposal at present
de mal/g3kev
 
 
 
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