PSR 500 MANUAL states use LTR for LOGIC TRUNKED RADIO LTR) systems. Is this the same as LTR Standard? What im doing is entering freqs in and it is a System Type of LTR Standard.
I may get corrected on this, but it's pretty much like Multi-site for LTR trunking, where multiple systems are networked together, allowing you to go beyond the coverage area of your LTR Standard system. Theres a little info on it in the wiki:
Right now there aren't any scanners capable of following LTR Passport conversations, but maybe we'll get lucky and GRE will include this in a new upgrade.