Amateur Radio Station

WB2RCB

ANTENNA SYSTEM

 

Below left: My present day antenna farm consists of a Rohn FK2558 foldover tower using a 4-point guying system. Atop the tower is a Hy-Gain TH3MKII tribander that I have had since 1966. It has been rebuilt 3 times over 40 years and still delivers excellent performance. It is rotated by a Hy-Gain Ham IV rotator. Also mounted on the tower is a Diamond X-510 vhf/uhf vertical and full wave loops for 40 and 80 meters fed with Balun Designs 2112 (2:1) transformers and a inverted-L for 160 meters fed thru a motorized base matching capacitor. (Heathkit SA-2550)

Below right: 160 meter control enclosure with Balun Designs 1:1 Chole Balun, Hathkit SA-2550 motorized 500pf capacitor, Alpha-Delta TT3G50 Surge Protector and copper ground buss. On the outside right of the enclosure is a Array Solutions bleeder inductor for the 160 meter inverted-L . The Heathkit SA-2550 motorized matching capacitor for the 160 meter inverted-L antenna is controlled from the shack. With this unit it is possible to match the antenna any place in the 160 meter band with a flat 1:1 SWR   Currently I have 40 resonate (130') radials bonded to the round aluminum plate which in turn is connected to the 2" copper pipe which is sunk 8 feet in the ground.

Bottom left: 160 meter inverted-L control enclosure and ground rods

Bottom right: Balun Designs 2112 (2:1) balun for the 80 meter full wave loop

 

View of the feedpoints for the 40 and 80 meter full wave loops

 

© WB2RCB 2000 - 2011