Transmission; Transmit Time-Out Timer (Tot) - Standard Communications Horizon HX255S Owner's Manual

9. To lock the channel in the operating mode so that it is not
accidentally changed, hold down the
seconds. This locks the
controls except the H/L, PTT and
" appears on the display to indicate that the channel is locked.
Hold down the
channel. Key lock symbol "
10. When a message is received, the TX/BUSY LED lights green to
indicate that the channel is busy.

4.3 TRANSMISSION

1. Perform steps 1 through 7 of RECEPTION.
2. Before transmitting, monitor the channel and make sure it is clear.
THIS IS AN FCC REQUIREMENT!
3. For communications over short distances, press the H/L key until "L" is
displayed on the LCD. This indicates low power, approximately 1 watt.
Transmitting on 1 watt prolongs battery life. Low power (1 watt) should
be selected whenever possible.
4. If using low power is not effective, select high power by pressing
the H/L key until "H" is displayed.
5. When receiving a signal, wait until the signal disappears before
transmitting. The transceiver cannot transmit and receive
simultaneously.
6. Press the PTT (push - to - talk) switch. The TX/BUSY LED lights
red during transmission.
7. Speak slowly and clearly into the microphone. Hold the
microphone about 1/2 to 1 inch away from your mouth
8. When the transmission is finished, release the PTT switch.
9. Refer to the OWNER'S MANUAL SUPPLEMENT for standard
transceiver operating procedures.
4.4 TRANSMIT TIME - OUT TIMER (TOT)
While the PTT switch is held down, transmission time is limited to 5 minutes.
This prevents prolonged unintentional transmissions. About 10 seconds before
automatic transmitter shutdown, a warning beep is sounded from the speaker.
The transceiver automatically switches to the receiving mode, even if the PTT
switch is held down. Before transmitting again, the PTT switch must first be
released and pressed again. This time-out timer (TOT) prevents a continuous
transmission that would result from an accidentally stuck PTT switch.
Page 10
and keys and all the front panel
key for about 2 seconds to unlock the
" disappears from display.
NOTE
Owner's Manual
key for about 2
key. Key lock symbol "
HX255S