[TowerTalk] Help with Force 12 C3S 10-Meter Adjustments

[John Bayne N4EEB]

First, thank you so much for the extreme response from hams both on and off the mailing list.  I'm truly grateful for everyone's input.  I have learned so much already.

1.  Two element yagi antennas of this design are a strange breed.  They can be counter intuitive, because the driver on a particular band is designed with impedance in mind first.  It is possible even, (not in this antenna), for a driver to be longer than a reflector.

2.  Computer plots of the numbers I supplied by hams with analysis programs correctly suggested that adjusting the length of the reflector would not improve the performance of the antenna.

3.  As for the length of extension of the driver tips for 10m, the arguments support from 1.5 to 4 inches or so.  However, a surprise phone call from a respected genius today gave me a starting number that is within that number range.  

So!  I'm going to adjust the 10m driver tips outward, and when it's all said and done I'm gonna come back here with the numbers and tell you how awesome I've made this antenna with all of your help!

Thank you.  See ya soon.

73 John N4EEB