> the two examples, i.e. Shunt fed tower vs. Inverted L, for a DX
> antenna? I am thinking about such things as angle of radiation,
> efficiency and ease of matching or any other parameters that would
> enhance the antenna for low angle radiation.
With a good ground system, say at least 30 radials at least 100
feet long, it matters very little which of the two systems you use.
If there are high ground losses, the amount of top loading can affect
the results a noticeable amount. In that case you'd want to make
the L longer than 1/4 wl, or use a tower with enough "stuff" on top
current is maximum 1/2 way up the tower.
An L might be somewhat easier to install, but if you do that be sure
the tower is bonded into the radial system.
73, Tom W8JI
This list is sponsored by the new eHam.net Store. When you buy products
like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
the eHam Store for the same price you pay direct, a portion of the sale
price goes to support this list. Check it out at http://www.eham.net.
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Administrative requests: towertalk-REQUEST@contesting.com