Block Diagram

1
2
3
4
A
B
C
D
4
3
2
1
D
C
B
A
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A4
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16-Mar-2012
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Coding circuit
IC1: 977·
ANTENNA
Oscillation circuit
AM
Regulator circuit
VCC+9V
27145MHZ
Frequency
selection
Antenna matching
TX1
27.145MHz

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