[Antennas] beam "design"

Sandy and Kees Talen [email protected]
Sat, 9 Nov 2002 11:51:00 -0600


I have come across some Cushcraft A4 parts (wind damage) and 
have an A3. Has anyone experimented with another director, 
stacked A3s, etc. I'll be trying some things in the future. Interesting 
point I heard today: when tuning up a beam on the ground (on a 
ladder, etc) point the beam straight up (supported on a pole next 
to the boom) ....gives more realistic readings. Haven't tried that 
but it may be better than the other method. Of course, that won't 
work for field strength patterns.

Cushcraft pushes the definition by calling an A4 a 4 element beam.
I usually think of 4 element as having 2 directors, not 2 different
reflectors and a little better optimization on 15m/20m. But I guess
technically it is "4 elements" ....just not on any one band.

I continue to be further biased towards Mosley or Wilson beams.

Thanks to MFJ for the 259, sure beats the R-X bridge for setting
up antennas.

73 Kees K5BCQ 
(feed it all DIRECTLY with ladder line and a good tuner at the 
Tx ...works)