Mick
Member
Since Wayne H has asked that "CHP scanners in patrol cars" and "CHP radios" are not to be mentioned in the same thread, I'll start a new one. At http://www.radioreference.com/forums/gre-scanners/135407-chp-adopts-gre-scanners.html#post1007739 gmclam mentioned in that post (which is below) that CHP cars cannot hear each other, & I want to point out that that is a fallacy.
For the Duplex system the patrol car radio hears both the base and the mobile frqs.
In the old days an officer could push a button to turn off the reception of the "car to station" frq, but that's not been the case for over a decade or so.
{The CHP actually uses a "duplex" system, dispatcher on one frequency and cars on another. Cars can not hear each other, even when close by, unless they specifically switch to "car to car" (where they typically transmit on the dispatch frequency).}
For the Duplex system the patrol car radio hears both the base and the mobile frqs.
In the old days an officer could push a button to turn off the reception of the "car to station" frq, but that's not been the case for over a decade or so.
{The CHP actually uses a "duplex" system, dispatcher on one frequency and cars on another. Cars can not hear each other, even when close by, unless they specifically switch to "car to car" (where they typically transmit on the dispatch frequency).}