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Old 4th May 2013, 5:01 pm   #207
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,800
Default Re: Another unusual plug and some other questions

The schools in our area had some sort of radio/gram hidden away somewhere and C&S speakers with switched volume controls. I thought they switched resistors but they could just have well been transformer taps.

Just seeing the connector re-creates the sounds ding-de-dong, ding-de-dong, DING-DE-DONG, DING-DE-DONG, BONG! Are you sitting comfortably?

David
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