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APCO P25 MODE OPERATION
n Talk Back function
The talk back function allows you to select the same call
mode (Analog or Digital) and/or call type (Individual or Talk-
group) as the received call.
When the talk back timer is set to 0 second, this function is
not activated.
After the talk back timer period ends, the transceiver auto-
matically returns to the default call mode and type.
If your transceiver’s revision number is 1.7 or later, you can
cancel the talk back function by pushing [Home].
When the channel type is “Mixed-Analog”
After receiving a digital signal, you can select the digital call
mode by pushing [PTT] before or during the talk back timer
period.
When the channel type is “Mixed-Digital”
After receiving an analog signal that can release the mute,
you can select the analog call mode by pushing [PTT] before
or during the talk back timer period.
When the channel type is “Mixed-Digital” or “Digital”
After receiving a digital signal, you can select the same call
type for the received call (individual or Talkgroup), by pushing
[PTT] before or during the talk back timer period.
NOTE:
When this function is not activated, the transceiver trans-
mits an analog signal on the “Mixed-Analog” channel, and
transmits a digital signal on the “Mixed-Digital” channel.
• The transceiver receives both analog and digital signals
on the “Mixed-Analog” and “Mixed-Digital” channels, re-
gardless of this function.
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