Projects
Each project page shows what it is, how far it has got and its block diagram. Full documentation follows as each one is finished.
VCR139A 405-line Television Monitor
A 405-line picture from a wartime 3½-inch radar CRT, with a Pico test-pattern generator and a Band I receiver.
625 → 405-line Standards Converter
A Raspberry Pi Pico converts modern 625-line video to 405 lines and puts it out on Band I for vintage televisions.
VCR139A Panadaptor
A band-scope display for a communications receiver, using the VCR139A as the screen.
Bush TV22 Restoration: New Line Output Transformer
Bringing a 1950 Bush TV22 back to life when its line output transformer is beyond repair.
Bush TV12 Restoration: Replacing the Missing T4
The TV12's line output transformer is gone entirely; a new one is wound on a ferrite core, keeping the original EHT overwind.
Magnetic Loop Controller
Automatic tuning and SWR display for a motor-driven magnetic loop antenna.
Automatic Valve Tester
Emission, mutual conductance, gas and shorts testing, with relay pin routing and a colour display.
Battery Eliminator for Vintage Battery Sets
LT, HT and grid bias for 1920s–30s battery receivers, from a 6 or 12 V battery or the mains.
Digital EHT Probe, 0–20 kV
A self-contained EHT probe that reads kilovolts directly on its own LCD, for 405-line TVs and CRT supplies.
LW/MW 'House Station' AM Transmitter
Your own programme on long and medium wave, for the vintage sets around the house — and no further.