On May 1, 7:37*pm, "Dave" wrote:
"Art Unwin" wrote in message

...

David, the antenna covers the distance covered by a mfj 259 b which is
1.7 to around
175 mega hz. Obviously it therefore has no limits above .Below I
cannot measure unless I modify my radio outside the amateur bands, ie
reflect swr outside the ham *bands. Beam widths I can't determine as I
do not have enough segments available on my optimizer program . But I
believe that can be accomplished.

but wait... you have built it.. you can measure the swr, so why can't you
measure the beamwidth? *pick an AM broadcast station and turn it and see how
wide the pattern is.

I dont know if Dave built it or not but I did and tested the beamwidth
just as you said and got 360 degrees. Rotating it had no effect at all
on signal strength. I tried it on 2M and couldnt hit the local
repeater with 1 watt normally I can reach it with 100mW. I would say
this classifies the antenna as a dummy load.

Jimmie