TC-618/626 Service Manual
77
Wide
Bandwidth
Rotate the
Channel
Selector
knob to
CH6, CH7 and
CH8, and set
their CTCSSs to
low, medium
and high
respectively.
Press
PTT
to
enable this
function, and
select the wide
bandwidth.
Switch between
frequencies by
PTT
press in
each channel.
Adjust VR601
with ceramic
tuning tool to
check each
frequency.
Apply
SK1
or
SK2
to
perform fine
tuning until
the CTCSS
deviation
meets the
requirements.
500~900Hz
(550-650Hz is
recommended)
CTCSS
Deviation
Narrow
Bandwidth
Rotate the
Channel
Selector
knob to
CH6, CH7 and
CH8, long press
PTT
to enter the
narrow
bandwidth, and
short press
PTT
to switch
between
frequencies.
Communication
Test Set BPF:
<20Hz~300Hz
Antenna
VR601
SK1
SK2
Apply
SK1
or
SK2
to
perform fine
tuning until
the CTCSS
deviation
meets the
requirements.
300~500Hz
Rotate the
Channel
Selector
knob to
CH9 and select
VOX Level 1.
Press
SK1
or
SK2
to enable
this function.
Communication
Test Set
BPF:
<20Hz~15kHz
AF: 1kHz
10mV
Apply
SK1
or
SK2
to
perform
adjustment,
and rotate the
Channel
Selector
knob to save
it after
one-point
adjustment.
Rotate the
Channel
Selector
knob to
CH10 and select
VOX Level 2.
Press
SK1
or
SK2
to enable
this function.
Communication
Test Set
BPF:
<20Hz~15kHz
AF: 1kHz
6mV
Apply
SK1
or
SK2
to
perform
adjustment,
and rotate the
Channel
Selector
knob to save
it after
one-point
adjustment.
VOX
Rotate the
Channel
Selector
knob to
CH11 and select
VOX Level 3.
Press
SK1
or
SK2
to enable
this function.
Communication
Test Set
BPF:
<20Hz~15kHz
AF: 1kHz
4.5mV
Antenna
Earpiece
Jack
SK1
SK2
Apply
SK1
or
SK2
to
perform
adjustment,
and rotate the
Channel
Selector
knob to save
it after
one-point
adjustment.
Содержание TC-618
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