Abstract: Medium frequency sferics detection equipment has been used successfully for 10 years. Its usefulness is based an the finding that 95% of the alarms occurred when ≥30 dB(Z) radar echoes were present on a WSR-57 radar. The ...

Abstract: An investigation of the effective maximum range of detection of 500-kc./sec. sferies was conducted by examining recorded sferies data from widely separated locations and also during times when a circular area surrounding ...

Abstract: The high probability of detecting physically limited sferics pulse energies during some part of the overall lightning process was used in the development of a narrow band receiver-detector range sensor. An rf amplifier and ...

Abstract: Changes in the differential pulse height, distribution of atmospheries as monitored on 500 kc. sec.?1 have been studied on the basis of entire thunderstorm histories. Marked differences in the distribution have been measured ...

Abstract: The count rate of ?sferics? monitored at 500 kc./sec. has been related to official severe weather events occurring within the detection area during a 48-day period. Sferics activity was always in evidence prior to and ...