Transmitting Audio - Vertex Standard VX-556 User Manual

2. To switch to lower power to prolong the battery life, short press the
Side-2 button.
3. To return to high-power operation, press the Side-2 button again.

Transmitting Audio

If the Busy Channel Lockout (BCL) feature is programmed on the
channel, the radio does not transmit when a carrier is present. Instead,
the radio generates short beep three times. To be clear of activity,
release the PTT button and wait for the channel.
If the Busy Tone Lockout (BTL) feature is programmed on the channel,
the radio can transmit only when there is no carrier being received or
when the carrier being received includes the correct tone (CTCSS tone
or DCS code) on the channel.
1. Monitor the channel and make sure it is clear to transmit.
2. Press and hold the PTT button.
3. Speak into the microphone area of the front panel grille in a normal
voice level.
4. To return to the receive mode, release the PTT button.
Note:
• The VX-556 has a Time-out Timer (TOT) that limits the
length of each transmission to 1 min by default. It prevents
prolonged transmission.
• The selected channel is maintained even when the
transceiver is turned off.
• The CB-05/R and CB-35 channels are used for
emergencies.
• The 5-tone Sequential System is not available on these
channels. The 5-tone Sequential System is only available
through Customer Programming Software (CPS).
• The CB-22 and CB-23 channels are used for telemetry and
telecommand applications. Voice communication is not
available on these channels.
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