R.F. Impedance determination
Radiation source detection by recording spectral records at diff
Radio frequency receiver
Radio frequency resistivity and dielectric constant well logging
Radio receiver employing premixing and digital display
Radio-controlled devices for use in power distribution circuits
Radome test instrument
Range resolving ground line sensor
Reactance meter
Reactive power to DC signal converter
Reading sensing meter
Received signal frequency indicating system
Redundant rate sensor and method
Reference frequency and low voltage detector circuit
Reflection coefficient measurements
Reflection coefficient measurements
Remote detector of flaws in surfaces using micro-waves
Remote load current sensor
Remote sensing of hydrocarbon gas seeps utilizing microwave ener
Remote sensing of vegetation and soil using microwave ellipsomet