Pye PF1

Some managed to put PF1s on 70cm. 

When I started work a test was to convert the PF1 units to 12.5kHz channel spacing. The PF1's were widely used by the UK police.These were relatively QRP and the RX and TX were separate units. I think the police had to have base stations quite often. Still, it revolutionised policing in towns and cities.

See https://sites.google.com/site/g3xbmqrp3/vuhf/pf1