In article ,
Roger Hayter wrote:
To make matters worse there were negative and positive earth dc
supplies. Radios need mods to work with positive earth.

Not really. You just need not to touch the chassis....

(snip)

Or the grub screws in the knobs. I know this.

'Universal' radios etc I've seen had the grub screw sockets filled with
hard wax.

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*Why can't women put on mascara with their mouth closed?

Dave Plowman London SW
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