Does anybody recognise these very old PLL Driver Boards?

[teckniqs]

I've had these sitting around for donkeys.

....The first one I got from somebody in Birmingham around 20 years ago.
Does anybody recognise it and know who originally built it?

The second copper clad board one came out of an old rig from London built over 25 years ago in the early days of PLL.
...Who built this?

Driver Birmingham 1.png

Driver Birmingham 3.png

Driver London 1.png

Driver London 2.png

[radionortheast]

I'm surprised it worked

[teckniqs]

I'm surprised it worked

Haha they actually both still work I tested them both last night and still work perfectly!

....believe it or not I've seen even worse than these which actually worked but I've seen other birdsnest boards which didn't work properly at all.
I'll try and find you a picture I added to an old thread...
Here we go now feast your eyes on these. viewtopic.php?t=2117&start=20#p23399

Anyway back on track does anyone recognise the two drivers I posted at the top of this thread?

[RF-Head]

First is a ZEN board (later in SMT)
second a early Dawson