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Old 12-11-2013, 06:34 PM
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wa2ise wa2ise is offline
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Join Date: Dec 2002
Location: USA
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Another AA5 radio mod, to run off low voltage AC

Yet another radio mod, this one I doubt anyone would replicate. At my mom's house there is this 8/16V @ 5A power bus, using the old 1/4 inch Jones plugs. Why these voltages> It dates back from the time we had a model railroad setup, and the lights in it used 8V. I have a few 4BE6's and 4AV6's, and a 17V centertap transformer I could wire backwards to get the plate voltage. The rectifier became made of sand, and the 50C5 became a submini 5902. And the 12BA6 changed to a 6BA6, and a small heater dropping resistor. The B+ came out a little low, around 90VDC, but the radio still works well.
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