On 2/17/2011 12:45 AM, Lew Phelps K6LMP wrote: > I own a 1929 Hudson Town Sedan. Its OEM electrical system was 6 volt > positive ground. Later Hudsons were 12 volt negative ground. From my contact > with the old car restoration community, my sense is that in the early years > (up to about 1950) the industry was about evenly split between positive and > negative ground. They finally standardized on 12 volt negative, more or less > in the 60s. I had a 1953 Dodge truck in college at the end of the 50's. 6V, positive ground, fairly beat up, bad brakes. I ran a 40m ARC-5 off of a vibrator power supply with a Gonset "converter" feeding the AM radio with an outboard BFO for CW. The vehicles we had in SE Asia in the US military were mainly 12V by 1964. Our multi-fuel 5-ton trucks were 24V, I think to get the engines started.
Stupid question: I was under the impression that the KPA500 was solid state, no-tune. A couple of references on this long "Voltage Thread" have caused me to wonder. Fact would be welcome. 73, Fred K6DGW Auburn CA PS S9DX is S9 on 14011 as I type, up 3 got him for me, they leave tomorrow I think ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
