Block Diagram

Frequency adjustment
circuit
Oscillatin
g circuit
TX-DET-OUT
SO
27.145MHZ
Antenna
Latch
Code
circuit
Output logic
circuit
PC
High frequency
oscillation
Modulation and
amplifying circuit
Before back
function control
A/D translation
Logic
control
Left right
function control
Indicating
circuit
Battery
TX2-4
27.145MHZ