the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency[1] range from around 2 kHz to around 3 GHz.
a local oscillator (LO) is an electronic oscillator used with a mixer to change the frequency of a signal.