On 7/14/06, kelsey hudson <[EMAIL PROTECTED]> wrote:
Carl Lowenstein wrote:
> to a
> great extent, the increased production was due to the development of
> tubes with 6.3V heaters to be used in car radios.
Although, from what I remember reading, not too many of these car radios
were actually built and shipped -- the transistor caught up by this
point and was used instead. Correct me if I'm wrong :)
There were a lot of car radios sold from the mid-1930's to the
mid-1960's, all of them with tubes. Some time out during WWII when
production shifted to aircraft and tank radios. With tubes. In 1964
I bought a high-end car radio with the latest thing -- hybrid tube and
transistor. Special tubes that would work with +12V plate supplies
ifor RF and IF, and a pair of power transistors for the audio output.
Oh, yes, it was AM, FM, and Marine band. But I could never get it to
play Sousa on the Marine band. :-)
carl
--
carl lowenstein marine physical lab u.c. san diego
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