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AE 40 help needed

Started by kozzy, November 27, 2016, 04:58:58 PM

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#15
November 30, 2016, 08:49:27 AM
Quote from: kozzy on November 30, 2016, 07:04:19 AM
Is there a preestablished formula for calculating REN?

This topic is a collection in one place of several prior topics dealing with REN.

http://www.classicrotaryphones.com/forum/index.php?topic=219.0

You might find it useful. Others may be able to help you directly.

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