Corrected entry: The radio that was taken up onto the roof was not battery powered and should not have continued working because it was no longer plugged into an electrical outlet.
manthabeat
26th Oct 2005
Tremors (1990)
Correction: The original post is correct. For a radio that size to be effective it would need to be attached to a DC car battery or converted to AC for a household plug. In any case this is a movie error.
A radio like that can run on 6 D cells. Trust me, I've owned enough radios to know better. At this point this mistake is semantics.
Correction: Not necessarily. It is possible it is battery powered. I have had many radios this large in the past that have both battery and AC power.
manthabeat ★