Logic Trunked Radio (LTR), is a radio protocol designed in the '70s by E.F. Johnson to make trunking efficient.
It is still in use (and provided by us) today, though there have been real breakthroughs in recent years.
Trunking simply means assigning specific radio frequencies (and hardware) to users as they call in, rather than locking
each radio to a specific channel. In LTR, all frequencies are pre-programmed into each radio, whereas newer sytems
make use of frequency-agile radios whose channels may be assigned by an over-the-air controller.
Our push-to-talk radios are therefore inexpensive, lightweight and walkie-talkie simple to use.
Yet they are an integral part of our connected communications world, find out how!