The Audio etc. forum has some threads on that, as I recall:
A good replacement radio would involve a number of variables, including location/space in each trailer, functions to be included, and sync issues with other items like TV, BlueRay player etc..
Search for "radio replacement upgrade" shows some promising leads here:
For now, we are happy with a KISS solution -- remove the faceplate!
We also bring along a standard old radio which runs on 6 D batteries -- a GE Super Radio which has lasted through many job site accidents, and has fairly good reception. I like the redundancy of the D cells and stand-alone radio.
Next may be a Sony international short-wave radio, or a Milwaukee unit that takes the M12 batteries we have been gearing up for in our portable tool quiver:
I will post a query about this on the Lithium Tool thread:
Sorry for the OT detour -- we now return to the previously scheduled discussion!