19-04-2017, 03:23 AM
You should be ok,but dont use more than 500V on old equipment. Although the current is small its the voltage that damages insulation. If the radios have 2 core lead, then its a good idea to check insulaton. Chassis are not normally earthed to mains,connecting an earth, even through the earth socket,will stress the insulation of the transformer,so its important to have good insulation here.
