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Reg Edwards wrote:
Cecil, while you are tuning your screwdriver, which is not a magloop, phase and magnitude does not enter your head. Forget all about it! Watching the SWR meter while tuning my screwdriver while driving had always bothered me. I first installed an audio VCO so I wouldn't have to watch the SWR meter. Next I installed a flip-flop so I only had to get the screwdriver started in the right direction and didn't have to hold down the toggle switch. When the SWR starts dropping, an LM-339 shuts off power to the screwdriver motor. And it's all done while my IC-706 is in reduced power tune mode. -- 73, Cecil http://www.qsl.net/w5dxp |
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