An expendable command termination receiver system for scientific balloon flights
Abstract
A lightweight, expendable command receiver has been developed for terminating scientific balloon flights. The receiver operates at 138.54 MHz and the command is actuated by a sliding tone from 300 Hz to 400 Hz. A Phase Locked Loop detector circuit operates an SCR firing circuit to actuate a gullotine type explosive cutter. Design information, schematic diagrams and construction details for the receiver are provided. An additional feature of the command receiver is the capability for measuring the slant range to the balloon.
- Publication:
-
Annual Technical Report
- Pub Date:
- July 1975
- Bibcode:
- 1975uclj.rept.....W
- Keywords:
-
- Balloon Flight;
- Command And Control;
- Design Analysis;
- Radio Receivers;
- Circuit Diagrams;
- Phase Locked Systems;
- Rectifiers;
- Very High Frequencies;
- Communications and Radar