Cushcraft  A4S   A4S Four Element Beam – 10, 15 & 20 Meters A4S is the true, high performance tribander. 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. … Continue reading Cushcraft A4S Yagi Beam Triband 4 ele. 10,15,20M