"Richard Clark" wrote in message
...
On Mon, 11 Apr 2005 21:02:01 -0400, "Fred W4JLE"
wrote:
He claims that it is a "minium reactance antenna" thus the name.
http://www.smeter.net/wb4ene/mra-antenna.php

Hi Fred,

A simple glance at the SWR chart reveals it is in fact a Maximally
Reactive Antenna - at least the initials are preserved.

73's
Richard Clark, KB7QHC

A conventional monopole, resonant at about 7 MHz, would completely circle
the Smith Chart for almost two complete revolutions from 1.8 to 30 MHz. I
suppose that is what is meant by "MRA". Apart from that it would be
interesting to know the precise structure details to attempt a NEC model.
It looks suspiciously like the CFA class of antennas.

Frank