KL7JR DUAL G5RV (360) degree coverage!??
Here's a double G5RV dipole
design fashioned from a double G5RV design by VO1TX who swears by it! The
concept is about the same as a G5RV design but not critical on vertical
radiator or leg lengths. Maybe, "The more the better" applies?
It's just 2 dipoles
at right angles connected together then to the vertical radiator then to
the coax to shack. In other words, the plus wire from each dipole connects
together and to one leg of the twinlead and same for negative (shield) leg
then bottom to coax cable. Anyway, Bill VO1TX claims almost 360 degree
coverage plus being multi-banded. The tiny circles in the drawing below
represent the feed point connections and the separation of the 2
wires of each dipole (one runs N&S and other E&W).
1. Make each leg at least 40 feet long.
2. Use 300 ohm twinlead for vertical radiator (minimum 25 ft long) and attach to coax feedline to radio.
3. Use as flattop
(horizontal) or inverted V.
A close relative of this design is the Skeleton Cone antenna.
See more on it here.
73 John, KL7JR - kl7jr at yahoo.com
Scan Police, Fire, Rescue, Ham Radio, Aircraft, Ships, and much more!