[Antennas] 2 Meter Beam

[Jeffrey Madore]

Gentlemen,

I have a Cushcraft 11 element 2 meter beam that is about 30 years old.  =
I replaced the hardware on it with s/s, and am looking to set it up for =
the FM portion of the band.  In attempting to tune it up, I am finding =
that it appears that the antenna is designed for the ssb/cw band =
segment.  The element lengths also are different from the modern =
Cushcraft designs in that there is a greater degree of taper from =
reflector last director - After the driven element, each director is =
1/2" shorter than the previous.  The elements are also evenly spaced at =
about 14" on center.

My questions are: How does the higher degree of taper affect the =
antenna's pattern and performance?

Is this a decent antenna compared to more modern designs or should I get =
something new?

How would I go about raising the resonant frequency?  Do I need to trim =
all of the elements?  If so, would I trim the same amount off of each?  =
How would I determine how much to trim?

Thank you for reading, and for any information that you can provide.

Jeff - K1LE - CT


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