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Hy-Gain TH-3JRS - is a compact Tri-Band 10/15/20 Meter HF Beam Base Antenna. This Antenna was designed for the Ham who has space limitations but still wants top performance on 10, 15, 20 meters.
The TH-3JRS is constructed of tapered swaged aluminum tubing which offers low resistance. It can be rotated with a heavy-duty TV rotator. The Lightweight is ideal for rooftop or lightweight tower installations.
The Antenna features super strength stainless steel hardware and a boom-to-mast bracket that will fit masts (not included) up to 2 inches in diameter.
Forward Gain Up to 8 dBi
Front-To-Back Ratio 25 dB
VSWR at Resonance Less than 1.5:1
Nominal Impedance 50 ohms
Power Capability (Transmitter Output) 600 Watt PEP, 300 Watt AM
Lightning Protection DC ground
Net Weight 21 lbs. (11.7 kg)
Boom Length 12 ft. (3.65 m)
Longest Element 27’3” (8.30m)
Turning Radius 14’9” (4.49m)
Wind Survival 80 mph (128 kmph)
Accepts Mast 1 ¼” to 2” (32 mm to 51mm) (not included)
Surface Area 3.35 sq. ft. (0.32 sq. m)
Effective Moment* 310 ft. lb. (53 kg-m)
Wind Load at 80 MPH 87 lbs. (39.4 kg)
Hardware Stainless Steel (except for U-Bolts and some small parts)
Suitable Rotators Hy-Gain AR-40 or CD-45II