RECEIVER ADJUSTMENT (Continued)
CONNECTIONS
AC
OSCILLO-
MILLI-
-
VOLTMETER
SSG
VOLTMETER
SCOPE
I TO ANTENNA
TO [EXT
SP)
I CONNECTOR
EJ
SPEAKER
JACK
TO CATHODE OF
D21
(MAIN UNIT)
~
-
TO CATHODE OF D33 (IF UNIT)
-
MEASUREMENT
ADJUSTMENT
POINT
ADJUSTMENT
ADJUSTMENT CONDITIONS VALUE
UNIT LOCATION
UNIT ADJUST
METER 1
• Display freq.: any FRONT METER
MAIN
R76
SQUELCH (except 762MHz)
PANEL
~
•Mode:
FM
(narrow)
SIGNAL
5 9
+20 +40
• SQUELCH
CONTROLC
-
~
-
SQUELCH
2
•SQUELCH
CONTROL: More than
S9+60dB
Verify
Max.
clockwise
NOTE:
If
the METER does
not
indicate
more than
S9+60dB
at step
2,
repeat "S-METER" adjustment.
CENTER 1
•Display
freq.: 26.0000 MHz FRONT
METER
Same value as no
IF
R127
METER
•Mode:
FM
(wide) PANEL signal receiving.
•
R29,
R32
(MAIN UNIT): Center
•Apply
RF
signal
to
ANTENNA
CONNECTOR.
Level: 32µV
(-77dBm)
Mod.: OFF
Freq.: 26.0000 MHz
2
•Display
freq.: 26.1000MHz
S9+50dB
MAIN
R32
•RF
signal freq.: 26.0000MHz
3
•Display
freq.: 26.0000MHz Center
R29
•RF
signal freq.: 26.0000MHz
NOTE:
Repeat steps 2 and 3 several times.
4
•Display
freq.: 26.0000 MHz FRONT
METER Center
IF
R92
• Mode:
FM
(narrow) PANEL
CENTER 1
• Display freq.:
MAIN
Connect a
Frequency differen-
MAIN
R66
STOP 26.0000
MHz±
3.5~5
kHz
voltmeter
to
cies in
the(+)
and
• Mode:
FM
(narrow) cathode
of
D21.
(-)directions
should
•Apply
RF
signal
to
ANTENNA
be the same, i.e.,
26.0035MHz and
CONNECTOR.
25.9965MHz when
Level:
32µV
(-77dBm)
the voltage of.D21 is
Freq.:
26.0000 MHz
HIGH (8V).
NOISE 1 • Display freq.: 26.0000 MHz
IF
Connect an Noise wave form IF L10
BLANKER
•Mode:
SSB
oscilloscope
to
maximum
•NOISE
BLANKER SWITCH:
ON
cathode
of
D33.
•Apply
noise signal
to
ANTENNA
CONNECTOR.
AF GAIN 1 • Mode:
FM
(narrow)
REAR Connect an
AC
4.8V
MAIN
R124
•AF
GAIN CONTROL: Max. PANEL
millivoltmeter
to
[EXT SP] JACK
with
an
80
speaker.
6-10
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