“The Russians track the partisans with some sort of electronic beeping box which is supposed to be a radio direction finder - in closeups, it’s seen to be an impedance (AC resistance) meter. There are two dials and a label giving an equation saying X=(up) x (down) (omega), which means “impedance is lower dial times upper dial in ohms”. Even if the meter had anything to do with radio twisty wire between the terminals would be useless as an RDF antenna.”
