Consider Radio Moving Day in 1941

A RadioWorld cover story in the November 18th, 2009 issue "In 1941, Stations Confronted Moving Day" is a delightful read in the Roots of Radio series.  Fascinating historical points include how radio servicemen and the broadcasting infrastructure industry of the time did a little cashing in on the change to aid listeners (that owned push button radios) and stations (to shift their broadcast frequencies), respectively.   The FCC, created in 1934, made one of its first (political) power moves - getting 802 of the 893 licensed radio broadcasters to change transmission frequencies.  The comparisons with the Digital TV conversion efforts are noteworthy: Makers of digital TVs, converter boxes and digital transmission equipment have cashed in as well.  And there is the legacy of - as will likely be puzzled over by future station engineers - actual RF channels of DTV stations versus the often different displayed master channels (here in Milwaukee for example TMJ4 transmits on channel 28).  RadioWorld writer James O'Neal, at the close of his piece, eloquently captures the historical parallel, to paraphrase: why are many broadcast band radio stations' transmitting antennas electrically longer than they need to be?



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