Answers are grounded in this paper and cite their sources.
A description is given of a wideband feedback coherence control system for superregenerative NQR spectrometers. By making use of a servo motor to adjust the oscillator grid bias, increases in rf searching band are possible. As an example, a bandwidth of 30 Mc around a center frequency of 70 Mc has been obtained. The sensitivity of the circuit to nuclear quadrupole resonance signals is high. The spectrometer will operate unattended.
No takes yet. Share an insight, caveat, or question.
Peterson et al. (1964) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: