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5 - 7
*The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
5-4 RECEIVER ADJUSTMENTS
”TOTAL GAIN”, “S-METER” and “DSC PEAK” adjustments must be performed at “ADJUSTMENT MODE”.
NOISE NULL
POINT
RECEIVER
GAIN
TOTAL GAIN
S-METER
1
1
1
1
2
• Operating frequency : 0.5 MHz
• Mode
: A3E
• Preset L209 parallel to top edge of its
chassis.
• Preset L401, L403, L404, L405 and
L801 to max. counter clockwise.
• Set the standard signal generator to
OFF (no signal output).
• Receiving
• Operating frequency : 13.9210 MHz
• Mode
: J3E
• Connect a standard signal generator
to the [ANT] connector and set as:
Frequency
: 13.9210 MHz
Level
:
0.5 µV*
(–113 dBm)
Modulation
:
OFF
• Receiving
• While pushing HM-146’s [CALL]
switch and RC-26’s [EMG] switch,
then turn power ON.
• Push [2] switch to enter the RX
adjustment mode.
• Connect a standard signal generator
to the [ANT] connector and set as:
Frequency
: 13.9210 MHz
Level
:
320 µV*
(–57 dBm)
Modulation
:
OFF
• Receiving
• Set the standard signal generator to
OFF (no signal output).
• Set the standard signal generator as:
Frequency
: 13.9210 MHz
Level
:
10 mV*
(–27 dBm)
• Receiving
Front
panel
Front
panel
C o n n e c t a n A C
millivoltmeter to the
[SP] jack with a 4
dummy load.
C o n n e c t a n A C
millivoltmeter to the
[SP] jack with a 4
ohms dummy load.
Minimum output
level
Maximum
output level
MAIN
MAIN
R217,
R218
L207,
L208,
L210,
L211
ADJUSTMENT
ADJUSTMENT CONDITIONS
UNIT
LOCATION
VALUE
UNIT
ADJUST
MEASUREMENT
ADJUSTMENT
• Push the [OK] switch to write the adjustment value in the
memory.
• Push the [OK] switch to write the adjustment value in the
memory.
• Push the [OK] switch to write the adjustment value in the
memory.