The length from the repeater to the duplexer isno critical (or SHOULD not be when properly tuned). Therefore, there is no 'formula' other than you want it as short as possible yet allowing enough flex/extra that it won't get stressed.
Joe M. Don Morehouse wrote: > > Does anyone know the formula for the cable length between a repeater > and the duplexer? > > Thanks > Don VE7EDA