Ramsey Electronics SR2 - SR-2 Block Diagram

SR2 – 9
Antenna
J1
RF Input
&
Filtering
Mixer
Interm ediate
Frequency
Filter
Amp
Interm ediate
Frequency
Filter
Audio
(Speaker)
SR-2 Block Diagram
Local
Oscillator
AGC
Demod
Signal
Strength
LED
Automatic Gain Control
Receive Signal Strength Indicator
C1,C2,C3 L1,L2
Q1
T3,D3,Q3 C15,C16 R21
T1
Q2
T2
D1
U2, J2
U1:A
D2
RSSI
U1:B