Adventures in Amateur Radio

Scappoose, Oregon, USA    -     Columbia County

ITU Zone 6         CQ Zone 3         Grid  CN85nt

 





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.: Antennas

 

 

 

 

 

 

Here is the current antenna farm:

2 meters- Diamond X-50 co-linear @ 30 ft (9,1 m)

 

South Tower  (Main tower)

10/12/15/18/20 meters- SteppIR three element yagi at 50 ft (18,3 m). Rotator is an Alliance  HD-73

40 meters-
Two element Hygain 402BA yagi @ 60 feet.

Three full wave 40 meter slopers, SE (US/SA), SW  (Pacific) and NE (EU), switched by an Ameritron RC-4 remote coax switch

 

80 meters-
1/2 wave inverted vee, apex at 50 feet (15,2 m), facing E/W, and a 1/4 wave sloper pointing East (USA/SA)

160 meters- 1/4 wave slopers, facing SE (US/SA), SW (Pacific), and NE (EU)

 

 

North Tower  (Mult tower)

 

10/15/20 meters- HyGain TH3 MK2 Yagi at 40 feet. Rotator is an Alliance HD-73.

 

Other Antennas:

Horizontal delta loop - off the South tower, 535 foot diameter, approximately 60 feet (18,3 m) high, used for 20 meters - 160 meters as needed. Fed with 450 ohm ladder line to a 4:1 balun, then coax to shack. This antenna and has a low SWR on  20, 40 and 15 meters without a tuner!

 

Low Band Receive- DX Engineering dual directional 360 foot (109,7 m) Beverage oriented due North/South, used on 40/80/160 meters , six feet (1,8 m) off the ground. Follow this link for more information on our Beverage antenna.

 

Noise Antennas-  Fence mounted HyGain 14-AVQ vertical  (near a power pole with our service line), and a very steep inverted vee off the North Tower. These feed the Noise canceller.

 

Antenna switching is with an Array Solutions Six pak, (6 antennas into 2 radios), with the second radio input selectable between Station #2,  the Boatanchor station, and the lab workbench

 

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