in tke primary cathode follower and connected directly to the receiving antenna. The 2 sicresecon’ delay line vee added to persit the leading edge of the waveform to be recorded. In order to establish a definite tine relationship between the reception of the signal and the triggering of a given device such as a ecunter or trananitter, o tize parker pip, generated by the delay trigger and from one of the oscilloscopes, is fed through the 2 sicrosecond delay line and superiaposed on the initial portion of the received weveforn. EROGEDORS All ocecilloscopes ere calibrated against a known frequency standard for eveep linearity. The cathode follover triggering system is set to trigger approximately 6db. above the noise level. The vertioal deflectormof the oecilloscopes are set to receive the predicted field strength. BESOLIS Station A - Parry Jeland Positive results vere recorded on two of three oscilloscopes. predicted field strength for this abot vas measured field etrength was The and the @ wave forzs vere of good quality and alao showen jonospteric reflection of the signal. Station B - Kwajalein Positive results vere recorded on two of three oscilloscopes. File bas not been processed completely for analysis but the field strength from preliminary examination was orroxinete)/ The predicted value was BEST AVAILABLE COPY conn -35-