Bob says:
>Who knows when and where in USA 25Hz was so common that
>'consumer electronics' was manufactured to operate on it.
Don't know about 'consumer', but the latest Washington DC - Boston railway
electrification has some 25 Hz over part of its length, if I remember the
article in IEEE VTS News correctly. That line has 3 or 4 different
electrification systems, requiring automatic switching in the trains.
73
Peter G3RZP
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