de WB2CPN Hard to believe that someone said A-Bomb was first Yagi-Uda used. Germans had a night fighter that looked much like ours. Had three- element beams on each side of the nose. TRC-1 was first time I saw one. Look back in ARRL Handbook for some, too. Beam antennas, as we know them, were in use long before WWII. 73 Clete