Hello Dick
I have good results with my vert antenna and insulators at
12 meters high, the top load is a 13 meter cylinder 1.5 meter
diameter made from galvanised wire cap is abt 350 pf
Look at the gallery of G3YXM to see the antenna
Best 73 to all
Werner ON6ND
----- Original Message -----
From: Dick <[email protected]>
To: <[email protected]>
Sent: Tuesday, April 20, 2004 9:40 PM
Subject: LF: station status+antenna question
Hello all!
I just finished and tested the powersupply that should power
my 136kHz station.
50V/16Amp continue without any problem.
That 16Amp is the point where I set the current protection,
but the transformer is a 1000VA type.......
Most transmitter components are here, but waiting for just a few
difficult parts.
Meanwhile I'm thinking of what kind of antenna I will use.
I am planning to take down all my VHF-antennas from my old tower,
and extend the tower up to 20 meters.
The tower is ungrounded, but it does stands in concrete.
I want to put up some kind of isolated toploading with 'pancake-coil'
and some short wires (like EI0CF did in the past), and then feed
this by a single thick wire, well isolated and some meters away of the
tower.
This sounds nice, but I have really no idea what influence the metal
tower will have on the performance.
It isn't directly grounded, but I suppose there will be some leakage in
the
concrete.
Anyone with experience on this around?
73, Dick, pa4vhf
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