https://www.analog.com/en/resources/technical-articles/fast-startup-oscillator-fox-boosts-superhet-performance.html
Fast Start-Up Oscillator (FOX) Boosts Superhet Performance | Analog Devices
Receiver startup time is important in low-power duty-cycled applications operating on batteries. Duty-cycle time is dependant on message length, repition rate,...
fast start uposcillatorfoxboostssuperhet