Such use is permitted. See the WPX rules, Sec. V.C.1. and related WPX FAQ
73, Dave K3ZJ
On Mon, Mar 26, 2018 at 12:17 PM, firstname.lastname@example.org <email@example.com>
> There was one op, a KP4 signing his call/KT6.
> From what I understand you either sign /6 or /W6. The KT6 counted as a
> multiplier in WPX but I am wondering if it is valid or if it will be
> What are your thoughts?
> Ria, N2RJ
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