During the summer of 1983, I assisted in the installation of a GATES 25 KW transmitter at radio station KBHB, Sturgis, S.D. The transmitter in operation was a 1949 RCA BTA-5F 5KW. The transmitter was purchased by station owner, Les Kleven, when he put KBHB on the air in 1963. KBHB operates on frequency 810 KC. The old RCA operated on 580 KC. The original sight that this transmitter operated on is not known to me. Pictured is the ID plate which I salvaged from the door of the BTA-5F.

Three power options were available AC, DC and Battery. The battery connections are still intact but radio is currently running on the Light Socket option.

RCA introduced the BP 10 in 1940. It was considered to be the first compact portable which led to the development of the transistor radio a decade-and-a-half later.

This BP 10 has the original compliment of RCA date-coded tubes. The C cell provides filament voltage, and the (still available) 67.5 volt battery provides B+ voltage.
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