2.
Set
the
channel select switch
at
a programmed channel.
•In
the
receive mode, adjust L211 for
the
programmed receiving frequency minus 16.9MHz.
•In
the
transmit
mode, adjust L212 for
the
programmed transmitting frequency.
•Then
check again, because these adjustments interact.
3. Confirmation
Check each frequency:
All
frequencies should
be
within
±500Hz.
7 - 5 - 2 TRANSMISSION
A.
Power
Adjustment
1. Connection
of
measuring instruments and setting
of
the
knobs.
•Connect
ANT
to
50
ohm
power
meter.
•Connect
a
voltmeter
and variable power supply
to
the
set.
CAUTION: Applying over 12V can damage
the
P.A. transistor.
•Set
the
channel select switch
at
a programmed channel.
2. Procedure
•Adjust
L219
through
L222 and C285, C286, C290 and C291 for
maximum
power
output
while
pushing PTT switch.
•
If
the
total
current
drain exceeds 1000mA, adjust C291
to
set
the
current
at
1
OOOmA,
and
repeat above procedures.
3. Confirmation
More
than
2.5W
output,
less
than
1
OOOmA
current
drain.
No
abnormality
in
operation
should be
found
if
the
supply voltage
is
varied from 7.0V
to
10.BV.
B.
Modulation
Adjustment
Power
Supply
(7~11vl
RF
wattmeter
1.
Connecting
the
measuring
instrument
and
the
settings
of
the
controls.
Connect
a deviation
meter
to
the
ANT
Connector
with a directional coupler or
attenuator.
Deviation
meter
filter shall be a High Pass Filter 50Hz, L.P.F. 20KHz. De-emphasis
OFF.
•Set
the
channel select switch
at
a programmed channel.
•Connect
an AF oscillator, with AF millivoltmeter in parallel,
to
the
mic input.
2. Procedure
Mic
input
shall be 1KHz
120mV
RMS. During
transmit,
adjust R171
on
the
main
unit
for
4.5KHz
deviation.
7-7
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