Pye PF70

One of my early jobs in the labs at Pye Telecom was rebanding the PF70 to the band that included 2m. This involved optimising coils and capacitors. 

In the end I was in development for nearly 40 years before I retired. I used to come home and say my work was my hobby. Mostly it was great fun and I enjoyed it.

A piece of history

One of my first professional jobs at Pye Telecom was re-banding the PF70 to the band that included 2m. 

In those days crystals were quite inexpensive, so I made one with crystals for the fledgling GB3PI, 145.50MHz simplex and 145.55 MHz simplex. I think I added a 1750Hz tone burst as well.

They were bodyworn radios with a LS/mic. A handheld version was also made.

These radios are hard to find these days and batteries rarely work.