Hi Bruce & all, I took the 12v PSU out of my WS48 today and photographed it....been meaning too for years!
... so the story goes a ship with WS48 batteries was torpedoed by a Japanese sub...so there was a desperate shortage of batteries...
I don't know if that's the case or we were just too far from the beginning of a very extended supply chain.
The Kiwi boffins came up with this Vibrator Unit that supplies all the relevant voltages which sits beneath the transmitter unit.
The original radio plugs into the Vib unit and there is an on/off switch that attaches to the front hole in the battery box...
there are 2x copper upstands that connect to the TX chassis to earth the unit.
its a tight fit.
I have a hard copy of the original specs/wiring diagram somewhere, I'll post it IF I can find it
I bought 2 of these and gifted one to a chap who didn't even say 'Thankyou'. ~sighs~