[Boatanchors] Partially Off Topic Question

[Carl]

53 for select GM, 51 Chrysler Imperial. By 56 all the big 3 and independents 
were 12V negative ground.

Ford and a few others had a 12V option going back into the late 30's for 
public safety and emergency vehicles.

Carl
KM1H


----- Original Message ----- 
From: "Jack Antonio" <scr287 at sbcglobal.net>
To: <boatanchors at mailman.qth.net>
Sent: Sunday, August 09, 2009 2:40 PM
Subject: [Boatanchors] Partially Off Topic Question


> When did American automobiles go from a 6 Volt system
> to a 12 V system?
>
> I have a 52 Ford car radio which is 6 V, and I know
> that by the time I was aware of such things in high school
> in the mid 60s, all the family's cars were 12V, but when
> did the change occur?
>
> Was it an all at once starting with a given model year?
>
> Were 12V systems optional, becoming standard at some point?
>
> This was prompted by some idle thinking about using the 52 Ford
> car radio as a basis for a simple cheap ham receiver, by adding
> a BFO and a converter front end, a project that I may explore one
> of these decades.
>
> Thanks
>
> Jack Antonio WA7DIA
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