Re: AC/ DC radios live chassis.
AC/DC sets are not very safe under any circumstance but the T18DA does have a double pole mains switch so the side that switches to the chassis should be connected to Neutral. Many of the cheap imported USA sets have a single pole switch that disconnects the connection to chassis and if you connect this to neutral then the heater chain will make the chassis LIVE when switched off (only solution is to change the switch for double pole).
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