Hy-Gain LJ-103BA Long John 10 Meter HF Monobander Antennas are three-element beam antennas tuned for maximum forward gain over the entire 10 meter band. The antennas and their "beta match" are factory pre-tuned for maximum performance. 10M Long John elements are made of taper-swaged tubing with a bracket that will fit a 2 in. O.D. mast. The electrical hardware is made from super-strength stainless steel and all element tubing clamps are stainless steel. Hy-Gain Long John 10 Meter HF Monobander Antennas require a choke balun to prevent unbalanced current from flowing down the transmission line and affecting the efficiency and match of the antenna. These 10 meter beams are designed for use with 50 ohm coaxial cable. RG-213/U is recommended for lower losses and full power handling.
HF Beam Antenna Type:
Yagi
HF Beam Antenna Elements:3
HF Beam Element Material:Aluminum tubing
Antenna Power Rating:1,500 W
Beam Antenna Boom Length:8.00 ft.
HF Beam Antenna Boom Diameter (in.):1.250 in.
HF Beam Antenna Longest Element:18.58 ft.
Beam Antenna Turning Radius:10.20 ft.
Effective Moment (approximate):153 ft. lbs.
Mast Mounting Clamp Minimum:1.625 in.
Mast Mounting Clamp Maximum:2.000 in.
Wind Surface Area:2.00 sq. ft.
HF Beam Antenna Band Coverage:10 meters
Feedpoint Impedance:50 ohms
Antenna Feedline Connection Type:Terminal studs, #10
Quantity:Sold individually.
HF Beam Antenna Bands:10 meters
Beam Antenna Gain:7.5 dBi
Beam Antenna F/B (dB):24.0 dB
Bandwidth at 2:1 SWR:750 kHz
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