Ed Phillips wrote: > The 16-2/3 Hz was (and maybe still is?) used for electric RR > locomotives which used series connected commutator motors because of > their speed-torque properties. This frequency was "almost as good as" > DC and easier to transmit long distances. =20 Yes, 16-2/3 Hz is used for RR here in Sweden and in other european countries too. 73 Johan SM6LKM