Here's another that probably pre-dates Harrons FIRE PAL and FIRE REPORTER, it is a tunable "POLIC-ALARM" and in the 1950s my local firehouse had one near the watch desk tuned to the FD frequency. Great for us kids who would walk in after they had a run, and hear where they went and what was going on.
Judging by the dial it looks like they came in VHF low and high bands
Judging by the dial it looks like they came in VHF low and high bands