– 6 –
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
530 kHz (531 kHz)
3 ± 0.1V
Confirmation
1710 kHz (1602 kHz)
9 ± 1V (8.5 ± 1V)
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
580 kHz (621 kHz)
CT1
1,490 kHz (1,395 kHz)
FM VCO VOLTAGE CONFIRMATION
Frequency Display
Reading on Digital Voltmeter
87.5 MHz
3 ± 0.3V
108 MHz
Less than 11 ± 1V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
87.5 MHz
CT2
108 MHz
( ): Panama model
SECTION 4
ELECTRICAL ADJUSTMENTS
0 dB = 1 µV
[AM]
Setting:
Band switch: AM
[FM]
Setting:
Band switch: FM
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
Adjustment Location: Main Board (See page 7)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
+
–
level meter
2
jack (J1)
set
MAIN board
TP (FM IN)
32
Ω
0.01
µ
F
+
–
digital voltmeter
MAIN board
TP (VT)
FM Free-Run Adjustment
Setting:
Procedure:
1. Connect the frequency counter to TP (MPX) as shown the fig-
ure below.
2. Tune the set to 98 MHz.
3. Adjust RT1 for 76 kHz reading on the frequency counter.
Specification: 75.8 kHz to 76.2 kHz
Adjustment Location: MAIN board (See page 7)
0.01
µ
F
MAIN board
TP (FM IN)
set
FM RF signal
generator
Carrier frequency : 98 MHz
Modulation
: no modultion
Output level
: 0.1 V (100 dB)
+
–
MAIN board
TP (MPX)
+
1
µ
F
frequency
counter
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
+
–
level meter
set
32
Ω
2
jack (J1)
