LM909 radio telecontrol receiving decoding circuit diagram


Posted on Feb 6, 2014

The telecontrol receiving decoding circuit`s performance index shown as the chart are as follow: f radio frequency =27MHz, f audio frequency =5.5KHz, 100% modulation - square-wave; f radio frequency=±600Hz, and the frequency shift keying (FSK) is 160Hz, and the dutyfactor is 100%, 60% or 30%, T1`s primary is 10T, secondary is 4T; T2`s primary is 12T, second..


LM909 radio telecontrol receiving decoding circuit diagram
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