A4S Four Element Beam - 10, 15 & 20 Meters A4S is the true, high performance tri-bander. Precisely tuned high-power traps, carefully selected element lengths, and proper spacing combine to make the A4S the preferred antenna for your HF work! This is the premium antenna with all the features that you want. High gain, low SWR, and wide bandwidth keep the contacts coming in. All U-bolts, clamps and hardware are stainless steel. A4S has pinned boom sections and formed aluminum brackets to keep elements straight in all conditions. Specifications: HF Beam Antenna Type: Yagi HF Beam Antenna Elements: 4 HF Beam Element Material: Aluminum tubing Antenna Power Rating: 2,000 W Beam Antenna Boom Length: 18.00 ft. HF Beam Antenna Boom Diameter (in.): 2.000 in. HF Beam Antenna Longest Element: 32.00 ft. Beam Antenna Turning Radius: 18.40 ft. Effective Moment (approximate): 681 ft. lbs. Mast Mounting Clamp Minimum: 1.250 in. Mast Mounting Clamp Maximum: 2.000 in. Wind Surface Area: 5.500 sq. ft. HF Beam Antenna Band Coverage: 20, 15, 10 meters Feedpoint Impedance: 50 ohms Antenna Feedline Connection Type: Terminal studs, #10 Antenna Weight: 37.00 lbs. Quantity: Sold individually. Beam Antenna Gain: 8.9 dBi Beam Antenna F/B (dB): 25.0 dB Bandwidth at 2:1 SWR: Over 500 kHz
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