Pye Telecom PF1 NOT amateur radio

One of my first professional jobs was to convert the PF1 units to 12.5kHz channel spacing. This was for Mike Gotch who I heard much later was M0IMG. I think this was a test of my capabilities. 

Mike took early retirement to look after his sick partner. He sadly died later following a stroke.

PF1 units were low power and some were converted to 70cm. 

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

Pye Telecom PF1

When I first started work in 1970, my very first job was to convert the RX of the PF1 to 12.5kHz channel spacing.

Looking back I think this was a sort of test. It was set by Mike Gotch who I later found was G0IMG.  Mike was a keen 6m operator. He sadly died a few years ago.

I see there is a YouTube video of the PF1. For some time, I had a 2m AM receiver in a PF1 RX case. This was a super-regen design, but it worked well. I cannot remember what I did for the antenna.

Pye PF1 transceivers

My first job in 1970 at Pye Telecommunications was to convert the PF1 transceiver to 12.5kHz channel spacing. I am pretty sure this was a test to see how I got on.

We used 995 signal generators at that time and, boy, did they drift! For the first hour or so they were unusable and you might as well drink coffee and wait.

The PF1 was a 2 unit UHF transceiver widely used by the UK police in the  late 1960s. Some were converted to 70cms. I remember putting a 2m super-regen RX in a PF1 RX case.

This challenge was set by Mike Gotch who was later G0IMG (now SK). Apparently Mike was a pirate in his early days. In later years he was a keen 6m man.

See https://sites.google.com/site/g3xbmqrp3/vuhf/pf1
See also http://www.pyetelecomhistory.org/

Pye PF1 UHF handhelds

If you can find these, they can be converted to the 70cm amateur band, but they are hard to get hold of these days. TX power was 50mW. Perhaps they appear at rallies from time-to-time or on eBay?

My first project at work was converting these to 12.5kHz channel spacing. This was a task set by the late Mike Gotch, M0IMG. 

At the time I had no idea Mike was a keen amateur. Years before he had been a pirate and lost his licence I believe. In later years he was a keen 6m man. He retired early to care of his partner, who had cancer. Mike died as a result of the after-effects of a stroke.

The 12.5kHz version was never introduced commercially, but the exercise was a good one for me. The PF1, a product of the 1960s, transformed communications for the UK police. It was in 2 units, one for RX and one for TX. Even now, it still looks good.

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

Pye Telecom PF1

My very first job at Pye Telecom was to convert a PF1 RX to 12.5kHz channel spacing. Looking back, this was a test by Mike Gotch (later G0IMG, now SK) to find out what I could do. Mike was an assistant chief engineer back then. When he left he was a keen 6m man.

The PF1 was a UHF transceiver pair that was adopted by the UK police in the 1960s. It had a separate TX and RX unit. The TX was quite low power and had a pop-up antenna. The RX had a plate antenna.

Later, I worked on several Pye Telecom/Philips/Simoco/Sepura portables and pagers. I worked on several intrinsically safe units. Overall, it was a fun career. These days radio is still my main hobby and I am not involved professionally.

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

PF1 UHF

In my professional life I worked first for Pye Telecom. My first ever job (I think it was really a test of my capabilities) was converting the PF1 (a small UHF portable with separate RX and TX) to 12.5kHz channel spacing. In those far off days we had 995 signal generators and these took hours (really) to stop drifting! The task was completed OK as I recall.

The task was set by Mike Gotch , G0IMG, who is now a SK. At the time I had no idea Mike was interested in amateur radio. Apparently years before he had been a pirate and got caught! In the early days of UK CB he was a keen DXer and I last worked him on 6m I think.

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

Pye PF1 and PF8 handhelds

I've justed added a couple of pages to my website on two Pye Telecom PMR products I had involvement with in my early days in the development labs there.

See Pye Telecom PF1 Handhelds and Pye Telecom PF8 Handheld

For far more information on Pye Telecom see the website http://www.pyetelecomhistory.org/

Incidentally there is a drive to set up a permanent museum of radio history in the Cambridge area in which Pye Telecom products would be featured. £30k is needed to get this project off the ground. See the Pye Telecom History pages for more information on this project.