Jan-Martin Hertzsch wrote:
As operation under CEPT rules implies more or less that one
is operating from a temporary location, several countries do
not require any more to use the /p or /m suffix (although they
can still be used and may be helpful in some instances). Check
also http://www.ero.dk/ for an up-to-date version of the rules.

FWIW the /p or /m has never been required in the USA.

(at one time you were required to sign with the number of the call
district you were portable or mobile in, but that regulation was
repealed at least 15 years ago)

I *believe* (but don't hold me to it...) that the /W2 as a suffix
instead of a prefix is still required if, and only if, you're Canadian.
The reciprocral treaty with Canada was negotiated first, somehow has
different status than the treaties with other countries, specifies a
suffix, and has not been amended.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com