Designated Data Member

Selects the landed scan CAI (Common Air Interface) transmit data channel. This Scan List Member is selected from the current Scan List. This selection applies while operating in Scan Mode and once the Scan List Member channel has been landed.

( Applies only when this Scan List is referenced to a Conventional Personality that has...

its Rx Voice / Signal Type field set to "Mixed Mode" or "ASTRO", and

has a referenced Conventional System with a referenced Data Profile which has its Terminal Data field enabled. )

And

when the ASTRO OTAR field is enabled and not grayed-out, or

when the OTACR / OTACS Messaging field is enabled and not grayed-out.  

When the Scan Type field is set to "Conventional", and

when the Designated Data Rx / Tx Type field is set to "Fixed", and

when it is not a Dynamic Zone and Channel, and

when the radio is model / option capable.