Onwa Marine Electronics KV-300 - Manual (Page 16)

5.5 Transmission and reception
Transmitting without a perfectly functioning antenna may seriously damage
the transceiver.
The PTT (Push-To-Talk) button is located on the external microphone of your
KV-300. To transmit:
1. Ensure that no one else is speaking.
2. Hold down the PTT button on the microphone. TX will appear on the Display.
Wait for a second, then speak in a normal voice about 5 cm from the
microphone.
3. When you have finished, release the PTT button: TX will disappear from the
display. Now KV-300 is in receiving mode (silent and waiting for a signal)
and will automatically receive any communication.
5.6 Selecting high and low transmission power
The transmission phase absorbs the most energy. To reduce the risk of wearing
out the battery, we recommend selecting low transmission power when transm-
itting over short distances. Hold the H/L button down (on the radio): Lo (low
power) appears on the display. When transmitting or receiving over long distances
or with weak signals, press the H/L button again. Lo will be replaced with Hi
(high power) on the display.
When the transceiver is tuned to a channel limited to low output power, pressing
the H/L button has no effect.
5.7 Instant recall of channel 16
Channel 16 is a security and distress channel. This channel is used for emergency
communications.
Press the 16 button (the red one on the keypad) and you will be tuned on the
emergency channel.
To return to the channel previously used, simply press the 16 button again.
Do not transmit on channel 16 unless absolutely necessary. Doing so may
impede emergency operations.
12
The display/keypad backlight can be adjusted according to your needs or to the
environmental conditions.
To select the desired level of backlight:
eep pressed MENU/SELECT until DSC CALL appears on the display;
sing t he UP/ DOWN buttons select SYSTEM and confirm pushing
MENU/SELECT;
elect BACKLIGHT and confirm by pushing MENU/SELECT;
elect the desired backlight level, from 0 to 3.
To return to the radio modality, push PTT, select EXIT in every menu, or wait for
1
and the radio will automatically exit .
K
U
S
S
minute
5.8 Display/keypad backlight