JEFF UK wrote:

Hi.
I want to put up a receiving dipole for 0 - 30 mhz SWL.
I have a roll of 75 ohm tv coax.
Loads of stranded 2.5mm copper insulated electrical cable.
Questions;
What length should i cut the dipole for general 0 - 30 mhz listening ?
I will need to fold both ends to fit into my narrow garden .. is this ok ?
Do i need any form of earthling to the coax feed ?
Do i need a balun.. if so which and how do i build one ?
Thank you.
All advise appreciated
Jeff

Dipoles are not the preferred antenna for wideband coverage (0-30 Mhz).
Consider a properly grounded inverted-L antenna such as the one
discribed on the following website.

http://www.anarc.org/naswa/badx/ante...e_antenna.html


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In addition to the good link above, you could pick your favorite band (like
9.8mhz), cut your wire to length ( length in ft = 468/mhz ), forget the balun
just solder it up, and try it out. get it up as high as you can.

There's no better method to learn about antennas than building them and seeing
what works and what doesn't.

:^]

GL,

jw
k9rzz
milwaukee