HYT POWER446 Service Manual page 41

Set to CH13 and
VOX
Press
SK2 to enable
this function.
Set to CH14 and
VOX
Press
SK2 to enable
this function.
TX Low Voltage
Threshold
Set to CH8 at low
frequency
RX Sensitivity
(Bandpass)
Short press PTT
to
frequencies.
Long press PTT
to enter narrow
band, and hold
Squel Narrow
down SK1 or
ch On Band
SK2 to enable
this function.
Short press PTT
Communicatio
n Test Set
Level 4.
BPF:
or
SK1
<20Hz~15kHz
AF: 1kHz
3.5mV
Communicatio
n Test Set
Level 5.
BPF:
or
SK1
<20Hz~15kHz
AF: 1kHz
2mV
Digital
Voltmeter
Communicatio
n Test Set
SSG: -119dBm
MOD: 1KHz
DEV: 3.0KHz
Filter:
switch
0.3~3KHz
Communicatio
n Test Set
SSG: -125dBm
MOD: 1KHz
DEV: 1.5KHz
Filter:
0.3~3KHz
POWER446 Service Manual
Power
Power
Supply
supply
Port
Antenna
SK1
Earpiece
SK2
Socket
39
Apply SK1 or
SK2 to perform
tuning, and
rotate the
Channel
Selector knob
to save it after
one-point
tuning.
Apply SK1 or
SK2 to perform
tuning, and
rotate the
Channel
Selector knob
to save it after
one-point
tuning.
≤5.9V: the
alert tone will
Tune the
sound to
output voltage
indicate
and check the
transmission
emergency
inhibition if
level.
PTT is held
down.
Check the
bandpass
Rotate the
waveform.
Volume
Apply SK1 or
Control knob
SK2 to perform
to a proper
tuning, and
location until
rotate the
the output
Channel
amplitude is
Selector knob
not limited.
to save it after
SINAD: ≥12dB
five-point
tuning.
Tune the SSG
output signal to
squelch level. Squelch level
Rotate the (Level 1):
-125±1dB
Channel
Selector knob
to save the