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LF: MF DOPOLE

To: "rsgb" <[email protected]>
Subject: LF: MF DOPOLE
From: "mal hamilton" <[email protected]>
Date: Wed, 25 Jul 2012 08:37:00 -0000
Reply-to: [email protected]
Sender: [email protected]
MF
I tried a full size Horizontal dipole up at 12 metres high for 160 metres some years back and it was NO GOOD for DX long haul
Transmitting, however it did work well on Receive
I was able to receive East coast USA stations at good strength both on CW es SSB but they had difficulty or could not hear me  running 400 Watts to the antenna.
When I changed over to a 1/4 wave inv L with a vertical height of 20 metres I was able to work every one that i could hear including ZL es VK plus all the W stns as far as W6/7 es VE7
Because the dipole was so low the angle of radiation was too high and the transmitted RF had fizzled out on long haul.
Locally it was probably ok but this was not my aim.
I have a 25 metre mast available at present and thought about an inv V dipole for 600 metres as an experiment but it would be so low at this frequency and exhibit high angle radiation that it would be useless for long haul but probably very good around EU
Apart from the fun of antenna experimentation on LF/MF the only approach is a Vertical system,  like an inv L or T to guarantee all round results both on TX es RX but especially Transmitting.
 
de mal/g3kev
 
 
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