WARC-7 is the world´s first yagi for 30, 17 och 12 m utilizing multi-monoband design with 2, 2 respective 3 elements per band. It was first used on the famous K7K dxexpedition. On 30 meters it uses Force12 linear loading technique to shorten the element length. Three individual Yagis are arranged on a common boom using Force12 forward stagger design. The three driven elementens share a common feedine and feature Force12 patented closed sleeve feed system. Longest element is 10,3 m.
Antenna
|
Boom Length
|
Wind Load
|
Frequency in MHz
|
Gain @74’1
|
Net Gain2
|
F/B Ratio3
|
VSWR4 (max)
|
Turning Radius
|
Wt.
|
Mast Torque
|
WARC-7
|
15’6"
|
4.9sqft
|
10.100-10.150
|
11.4dBi
|
4.2dBd
|
16dB
|
<1.3:1
|
15.5'
|
32#
|
<135in/lb
|
|
|
|
18.068-18.168
|
11.5
|
4.3
|
14
|
<1.5:1
|
|
|
|
|
|
|
24.890-24.990
|
13.2
|
5.3
|
20
|
<1.4:1
|
|
|
|
