 Transmissions took place from a single arrowhead antenna mounted on the nose of the aircraft . This consisted of a folded dipole with a passive director in front of it , both bent rearward at about 35 degrees , projecting from the nosecone on a mounting rod . For vertical reception , the receiver antennas consisted of two half @-@ wave unipoles mounted above and below the wing , with a reflector behind them . The wing acted as a signal barrier , allowing the antennas to see only the portion of the sky above or below the wing as well as directly in front . These antennas were angled rearward at the same angle as the transmitter . The horizontal receivers and directors were mounted on rods projecting from the leading edge of the wing , the antennas aligned vertically . The fuselage and engine nacelles formed the barriers for these antennas . 
