William Warren wrote:

The Ranger II added Six meters in place of Eleven. It was introduced at
about the same time as the Class D citizen's band, IIRC about 1964. At
the time, Six meter AM was very popular, since technicians had full
privileges on the band, so six meters was a good "mid life kicker" and
the Ranger II was produced for several more years.

I stand corrected: according to http://www.radioing.com/museum/tx4.html,
the Ranger II was made from 1961 to 1965. I didn't know the class D
citizen's band was that old.

William

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