[turretslug]

On a few pre-war sets, there was a 12-5m or thereabouts band referred to as "ultra short". Probably fairly quiet in most locations, unless you were in a 41.5MHz locale, was there much usage of 11m broadcasting then? I suppose it's all relative to what had come before, at some point someone (or some committee) with a tidy mind seems to have decided on spectrum delineation in decimal wavelength increments, hence the familiar 30-300MHz VHF, 300-3,000MHz UHF etc.- this demarcation would seem to have more application to abstract book-keeping than practical application to circuit techniques, propagation and so on.