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Crystal Detector
1.
Set the
FIvl
SG output frequency to 98MHz
output level
to 60dB
(unmodulated),
and
tune
the
SX-3800 to
this
frequency.
2. Adjust the B core of
T201
so that the voltage
between no.10 terminal
of
the tuner
assembly
and
ground
is reduced to DC
0V
(t300mV).
3.
Set
the
FM
SG output
level to
60dB,
modula-
tion
frequency 400H2,
frequency
deviation
7
SkHz
(100V.
m odulation
).
4.
Adjust
the
A core
of
T201
to
obtain maximum
AC voltage reading between no.L0 terminal
of the tuner assembly and
ground.
Connect
SIGNAL
meter
or DC
voltmeter
To
REC
terminal
sx-3aoo
Oscilloscope
MPX
signal
generator
IN
(EXT.
MOD}
Fis.8.2
To
FM
300n ANT
terminals
AC
voltmeter
Distortion
meter
FM signal
generator