Cops on FM.

[dieseljeep]

Originally Posted by Colly0410

In England till the late 1980's the cops would use around 100Mhz on the FM band for their 2 way radios, of course nearly all FM radios could pick them up. Spent many a bored night listening to their transmissions, most of the time you could only hear one side of the conversation as they were semi duplex, but some networks were simplex & you'd hear both sides. Of course it was illegal to listen, but millions did, lol...

In the mid 50's, our Police band was on the upper end of the broadcast band around 1700 KC. I used to tweak the osc trimmer on a AA5 to receive it.
Going into the 60's everything went FM around 158-159 MC around here anyway.

[jr_tech]

Originally Posted by dieseljeep

In the mid 50's, our Police band was on the upper end of the broadcast band around 1700 KC. I used to tweak the osc trimmer on a AA5 to receive it.

I have several radios from the 30s and 40s that have dial markings to 1700 KC... some are even marked “police” at the upper end of the dial. Were these transmissions normally 2-way or just receive only in the cars?

jr