Batboard

i did the search with little results.

is there a way to know if a particular LTR site is running passport?
say..different sounding data pulse, unique tones/data on talk groups?

wazz

If it is a Passport system the Home and Collect channel will pulse at a faster rate then your average LTR system (every 2 secs or so). Or you could always run a decoding program like LTR Trunk and figure it out that way.

Where is the system in question? Have you checked Radio Reference to see if somebody has already submitted the info you are looking for?