HYT TC-268 Service Manual page 61

Adjust the transmitter section:
Item Condition
CH: TX center
8.Transmit
Turn to channel 1 in
frequency
manual mode
1.CH:TX center
Turn to channel 2 in
manual mode
2.CH: TX LOW
9.Power Turn to channel 3
Press PTT
3.CH:TX HIGH
Turn to channel 4
Press PTT
1.CH: TX
turn to channel 13
in manual mode,
dev: wide
Press PTT
10.MAX
DEV
2.CH: TX
turn to channel 13
in manual mode,
dev: narrow
Press PTT
1.CH: TX
turn to channel 13
in manual mode,
dev: wide
Press PTT
11.MIC
SENS
2.CH: TX
turn to channel 13
in manual mode,
dev: narrow
Press PTT
1.CH: TX
turn to channel 9 in
manual mode
12.CDCSS/
CTCSS
2.CH: TX
turn to channel 16
in manual mode,
press PTT
1. CH: TX center,
turn to channel
9 in manual
13.CTCSS mode
DEV 2. CH: TX center
turn to channel
10 in manual
mode,
Measurement
Test equip Terminal
Synthetical
ANT
test
Synthetical
test ANT
Ammeter
center,
Synthetical
test
ANT
LPF: 15kHz
MIC
AF:1kHz
center,
120mV
center,
Synthetical
test
FILER: ANT
0.3-3.4kHz MIC
center,
AF:1kHz
12mV
center,
Synthetical
test ANT
center,
LPF: 300Hz
Synthetical
test ANT
LPF:300Hz
TC-268/368 Service Manual
Adjustment
Parts Method
PTT(up)M
Adjust it to center frequency
ONI(down)
Adjust it to: 4.0<Po<4.8 W
(TC-268)
PTT(up)M
ONI(down)
(TC-368)
Adjust it to: 4.0<Po<4.8 W
(TC-268)
(TC-368)
Adjust it to: 4.0<Po<4.8 W
(TC-268)
(TC-368)
VR501 Adjust it to:4.2kHz±100Hz
Check:1.8kHz-2.2kHz
VR501 Check:2.2kHz-3.6kHz
Check:1.1kHz-1.8kHz
Adjust VR500,the test value of on
condition 1 & condition 2 is
VR500
consistent, the difference
value<20Hz
PTT（up）
Adjust it to:0.75kHz±50Hz
MONI
Adjust it to:0.35kHz±50Hz
（down）
59
Specificatio
ns/Remarks
Error<150Hz
3.7<Po<4.7 W
I<1.6A
3.7<Po<4.7 W
I<1.6A
3.7<Po<4.7 W
I<1.6A
Wide
Narrow
Wide
Narrow
67.0Hz
CTCSS
250.3Hz
CTCSS
Wide
Narrow