[TowerTalk] quad w/dipole reflector

[jcjacobsen at q.com]

Yo, 

Bill, K4XS/KH7XS is wondering about a dipole reflector behind a quad driven element. 

A quick Google search for quagi finds: 

The VHF Quagi 
from an article by Wayne Overbeck, K6YNB in QST April 1977 

A snippet: 

"Before the next West Coast VHF Conference, the ill-performing, store-bought Yagi was modified in only one way. the driven element was removed and replaced with a quad type loop of no. 12 wire. There was no matching of any kind. A type-N connector was soldered in the center of the quad loop bottom side, and it was fed directly with RG-8/U. Now the SWR and gain both looked better. In the gain contest at the next VHF Conference, this antenna was measured at 9.8 dB over a dipole. Simply eliminating the gamma-matched dipole and adding a quad loop had increased the gain 3.4 dB!!! " 

Now, understand, this was done to a yagi for 432 mhz........... Still interesting reading. 

Good luck with your project Bill. 

73 es GDDX 

K9WN Jake