Questions on broadband antenna design (e.g. T2FD)
"Dave Platt" wrote in message
...
In article ,
C. J. Clegg wrote:
So, my questions are...
Take my answers as best-guesstimates, please, rather than as gospel!
1. How do I determine the overall antenna length that will give me the
most efficient (which is to say, the least inefficient) performance across
the 4 to 9 MHz range?
A range greater than 2:1 means that you're almost certainly going to
run into at least one operating frequency at which the antenna itself
is an extremely difficult load (very low, very high, and/or very
reactive) and that most of your power is going to end up in the
terminating resistor.
Since his range is just slightly more than 2:1, I wonder if he can pick the
resonance so that the thing is not full wave at any frequency of interest.
Either Mouser or Digikey had 50 W non inductive resistors.
Tam/WB2TT
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