[Elecraft] E-H Antenna Simulation in NEC

[John, KI6WX]

Stuart;
The nice thing about NEC is that it allows you to calculate things that you
can't easily measure.  The antenna cylinders are 98% efficient, but the
matching network described in the patent will lose over 99% of the energy
passing through it when connected to a 0.03 ohm load.  The overall
efficiency of the antenna is less than 1%.
-John


> John, a clarification please,  certainly the efficiency of the large
> cylinders is large, taken as themselves alone, right?  That is the 98 per
> cent efficiency you quote?   Because of the losses in the matching
network,
> (practical network which surely would have a Q of far less than 1000, )
you
> then see the overall antenna efficiency as only 1 per cent, correct?  IE
the
> antenna has to be taken as a system and the inefficiency of the matching
> detracts from possible efficiency of the whole.
>