Adjustments In The Adjustment Mode - HYT TC-610 Service Manual

2. Adjustments in the adjustment mode

Note: The antenna or load must be connected before adjustment.
Item Condition
Rotate to CH4.
Press PTT to enable
the function.
Low frequency
H
Short press PTT to
switch frequencies
cyclically (refer to
the adjustment list)
Tx Power
Rotate to CH2.
Press PTT to enable
the function.
Low frequency
L
Short press PTT to
switch frequencies
cyclically (refer to
the adjustment list)
Rotate to CH5.
Press PTT to enable
the function.
Wide band
Low frequency
CDCSS
Waveform
Short press PTT to
switch frequencies
cyclically and long
press PTT to switch
between wide band
and narrow band.
Rotate to CH5.
Press PTT to enable
the function.
Wide band
Low frequency
W Press PTT to switch
to other frequencies
(medium-low,
medium,
medium-high and
high).
CDCSS
Deviation
Long press PTT
(≥1.5s) to enter
narrow band.
Low frequency
Press PTT to switch
N
to other frequencies
(medium-low,
medium,
medium-high and
high).
Measurement
Test Test
Equipment Point
Radio
communication Antenna
test set port
Ammeter
Radio
communication
test set Antenna
BPF:
<20Hz~300Hz
63
TC-610/620 Service Manual
Adjustment
Parts Method
Press SK1/SK2 to
increase/decrease
the output power
and rotate the
Channel Selector
knob to save.
SK1
SK2
Press SK1/SK2 to
increase/decrease
the output power
and rotate the
Channel Selector
knob to save.
Adjust VR260 with
a ceramic tuning
toolto make the
waveform
approximate to the
rectangular wave.
VR260
Check
Adjust VR601 with
a ceramic tuning
tooland check each
frequency. Enter
the mode to adjust
finely with SK1/SK2
to limit the CDCSS
deviation to the
required range if
necessary.
VR601
SK1
SK2
Enter the mode to
adjust finely with
SK1/SK2 to limit
the CDCSS
deviation to the
required range if
necessary.
Specifications/
Remarks
4.5-5W
I≤1.7A
2W± 0.3W
I≤1.2A
500～900Hz
(It is
recommended
to adjust to
550-650Hz)
300～500Hz