User's Manual
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VHF SYNTHESISED DATA TRANSCEIVER
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Receiver
The receiver comprises:
F
r
o
n
t
E
n
d
A
m
p
I
F
A
m
p
Data
Out
P
AGE 9
R
x
VCO
ANTENNA
SWITCH
First Mixer
IF Filter
Second
M
i
x
e
r
L
o
c
a
l
Oscillator
F
M
Limiter
-
Discriminator
Squelch
C
i
r
c
u
i
t
I
F
Filter
Audio Filter
1
...
...
10
11
12
13
14
...
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