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TX POWER
To change the transmission output power:
Press [LOW].
•
Each time you press [LOW], the icon cycles from
H ➞ L ➞ EL, and then goes back to H.
The output power varies depending on the battery
type and operating voltage. The table below shows
the approximate output power when the transceiver
operates with different types of battery or DC power
source.
B
t a
e t
y r
O
u
p t
t u
P
o
w
r e
y T
e p
S
e
e l
i t c
n o
H
B
T
1 -
3
L
6 (
0 .
) V
E
L
H
P
B
4 -
2
L
L
7 (
4 .
) V
E
L
H
D
C
N I
L
1 (
3
8 .
) V
E
L
Note:
◆ You can store the TX Power settings independently for A and
B-band.
◆ If the DC IN voltage exceeds 14.5 V DC and "H" (High Power)
is selected, "H" icon blinks and the output power is reduced to
"L" level (Low Power) automatically.
◆ When you operate the transceiver on the 70 cm band using
the DC IN jack at the "H" position (high power), the internal
thermal protector activates in about 2 ~ 5 minutes, depending
on the ambient temperature. If you still want to continue or
repeat the transmission, use the "L" (low power) position
instead {page 51}.
VOLUME BALANCE
While you are receiving on the A and B-bands at the
same time, you may sometimes feel that the audio
output on either band is too loud. You can adjust the
volume balance level of the bands.
1 Press [BAL].
•
The balance scale and blinking cursor appear.
2 Turn the Tuning control or press [ ]/ [ ] to
change the volume balance level of the bands.
A-band Max
Max
B-band Mute
Att
Max: Maximum, Mute: Muted, Att: Attenuated
3 Press [ ] or [MNU] to store the setting.
Otherwise, press [ ] to cancel without changing
the current settings.
O
u
p t
t u
P
o
w
r e
A (
p
r p
x o
) .
0
5 .
W
0
3 .
W
0
0 .
5
W
5
0 .
W
0
5 .
W
0
0 .
5
W
5
0 .
W
2
0 .
W
0
5 .
W
Max
Att
Mute
Max
Max
Max
11 OPERATOR CONVENIENCES
Note:
◆ If TNC is selected for Menu No. 9 (SP/MIC JACK), the
squelch status (REM/ SQ) changes based on your volume
balance settings {pages 42, 43}.
◆ You can also set the volume balance while in Single Band
Operation {page 38}.
VOX (VOICE-OPERATED TRANSMIT)
VOX eliminates the necessity of manually switching
to the transmit mode each time you want to transmit.
The transceiver automatically switches to transmit
mode when the VOX circuitry senses that you have
begun speaking into the microphone.
When you operate the VOX function, you must use
an optional accessory, HMC-3 or KHS-21. Because
both the internal speaker and microphone are too
near to be used for the VOX function.
To turn the VOX function ON:
Press [F], [SQL].
•
"VOX" appears.
•
To exit VOX mode, press [F], [SQL] again.
Note:
◆ You cannot turn the VOX function ON while the Visual Scan
{pages 25} is activated.
◆ While the VOX function is ON, the Menu No. 28 (PACKET)
settings return to 1200 bps {page 42}.
◆ While the VOX function is ON, you cannot use [ ]/ [ ]/ [ ]/
[ ] to adjust other settings, such as the frequency and
operating band.
◆ While in the Menu mode {page 9}, the VOX function is
disabled temporarily.
◆ Since the VOX circuit must detect the presence of your voice,
you may notice a slight delay in transmission. The very first
part of your message may not be transmitted.
◆ Turn the HMC-3's VOX function OFF when you use the
internal VOX function.
VOX GAIN
To enjoy the VOX function, take the time to properly
adjust the VOX Gain. This level controls the VOX
circuit to detect the presence or absence of your
voice. There are 2 ways of adjusting the VOX Gain.
When the VOX function is already ON:
1 Press [ ]/ [ ] to select the desired VOX Gain from
0 (least sensitive) to 9 (most sensitive).
•
The VOX Gain level numbers, "G: 4" changes
accordingly (default is 4).
39
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Troubleshooting
