Progress report on a solid state FM-FM telemetering system

Program progress of hypersonic missiles and satellites is dependent upon advances in the telemetering art, for instrumentation must be functional under the imposition of severe environmental extremes. Recently, a solid state FM-FM telemetering system has been developed that is immune to shock and vibration of considerable magnitude. Transistorized units of the solid state system described in this paper are inductance, resistance, and voltage controlled subcarrier oscillators, a missile roll indicator, and a mixing amplifier.