On Wed, 07 Sep 2005 02:16:23 GMT, W2RAC
wrote:

PLEASE, I need help.
If anyone can run the numbers,
I have tried Quick Yagi with little success.
I have a pair of the OLDER Hy-Gain 2m antenna's. There design was a
200ohm Hairpin match (to 50ohm) with the reflector and
directors INSULATED from the boom.

Current model for the last 10+ years is the elements are not insulated
from the boom.

I want to respace the elements, possilbing cutting down as it is
easier than lenghting them, to get the best results for gain/pattern

I am only going to use them on 2M SSB with a center freq of 144.250

Here are the measurments.
14' boom
El Lgth Space
D6 34.62500 32.25
D5 35.00000 26.75
D4 35.12500 25.75
D3 35.12500 28.25
D2 35.25000 22.25
D1 35.50000 12.75
Driven 32.75000 16.75
Ref 44.37500 1.75

Notes. Measured in Inches. Reflector is mounted 1.75 inch from end of
boom, D6 is 1.5 inch from end of boom. All Elements are INSULATED on
top of the boom. If needbe I can remove 1 director as the insulator
need replacing.

It would be helpful (necessary) to know the element diameters and the
spacing from -one- reference point.

There are many "modern" designs published in the literature.
Boom correction factors for insulated/non-insulated elements are all
available on the web.

Practically everything you need to know can be found by starting he

http://www.ifwtech.co.uk/g3sek/diy-yagi/

One of the links:

http://www.k7mem.150m.com/Electronic.../yagi_vhf.html

might be especially helpful to you.