Dave, my first car had a vacuum tube radio. Talk about squeezin blood out of a turnip, it had 6v battery and the tubes in the radio needed 300v DC. Also, had old tube type CB radio, did the same thing. Today, we use solid state, transistors and diodes. Back then we used an old tube called a multi-vibrator, it made a buzzing sound, that flip floped the 6 voltages in to a step up transformer, before converting it back to 300v DC. This technology may be older than you, perhaps older than most on YT. George
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Today's Featured Article - Women and Tractors - More Views From the Farmer's Wife - by Teri Burkholder. The top ten reasons why the judges wouldn't let you participate in the stock antique tractor pull: Hey, this is stock! It came with that V8 in it! That "R" on my tires stands for "really old" not radial! Blue gas? We thought it was a pretty color! What wire hooked to my throttle?
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