User Manual

32
5
RECEIVE AND TRANSMIT
■ Functions for transmit
DD
Output power
The transmit output power can be continuously ad-
justed with [RF PWR].
Available power
144 MHz band : 5–100 W
430(440) MHz band : 5–75 W
1200 MHz band : 1–10 W (optional)
NOTE: To prevent interference, listen on the fre-
quency to make sure the frequency is clear before
transmitting by pushing [CHECK 7].
[RF PWR]
■ Transmission via
microphone
When transmitting with a microphone, push [PTT] and
speak into the microphone at a normal voice level.
To maximize the readability of your transmitted sig-
nal (voice), pause a few sec. after pushing [PTT]. Do
not hold the microphone too close to your mouth.
DD
Microphone gain
Rotate [MIC GAIN] clockwise to increase, counter-
clockwise to decrease the microphone gain.
9–12 o’clock position is recommended for [MIC GAIN].
[PTT] switch
HM-12
■ Indications during transmit
DD
Transmit indicator
The MAIN band indicator lights red while transmitting.
However, the SUB band indicator lights red during
satellite operation.
DD
RF power indicator
The S-meter for the MAIN band is used as the RF
power indicator to indicate the relative output power
level. However, the S-meter for the SUB band is used
as the RF power indicator during satellite operation.
DD
Time-out timer
The time-out timer limits the continuously transmittable
time period, and is selectable from 3, 5, 10, 20, 30 min.
and OFF in TRANSMIT set mode. (p. 66)
DD
PTT lock function
Deactivate [PTT] and [TRANSMIT] switches. The func-
tion can be switched ON and OFF in TRANSMIT set
mode. (p. 66)
S-meter while receiving
RF power indicator while transmitting
F M
VFO A
VFVF O A
F M
S 1 3
5
7
9 2020
4040
60dB60dB
60dB
OVER
S
1
3 5
7
9
20
40
OVEROVER
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