What sort of cable can I use for a AF signal generator ?
>
> It has a BNC connector for signal out and does sine/square wave and
> various kilocycles etc...
> It's made by Advance - England.
Any old cable you want that'll take a BNC. You can intermix 50- and 75-ohm BNCs at where you're not bothered about matching (like at audio) - they will intermate, unlike N types, which won't.