Well, I was wrong. It doesn’t specify the prefix, so I guess you can use whatever you want. I’ve heard Canadian station in the U.S. and they always use W#. So I guess you could use VE#. That’s what I did when I was on the Alaska Ferry going through B.C.
Article III
It is agreed that persons holding appropriate amateur licenses issued by either
country may operate their amateur stations in the territory of the other country
under the following conditions :
(a) Each visiting amateur may be required to register and receive a permit before
operating any amateur station licensed by his government.
(b) The visiting amateur will identify his station by :
(1) Radiotelegraph operation--The amateur call sign issued to him by the
licensing country followed by a slant (/) sign and the amateur call sign
prefix and call area number of the country he is visiting.
(2) Radiotelephone operation--The amateur call sign in English issued to him
by the licensing country followed by the words" fixed" "portable" or "mobile", as appropriate, and the amateur call sign prefix and call area number of the country he is visiting.
(c) Each amateur station shall indicate at least once during each contact with
another station its geographical location as nearly as possible by city and
state or city and province.
(d) In other respects the amateur station shall be operated in accordance with the
laws and regulations of the country in which the station is temporarily located.
Article IV
The present Convention shall be ratified and the instruments of ratification
shall be exchanged at Washington as soon as possible.
The present Convention shall enter into force on the day of the exchange of
instruments of ratification and shall continue in force for a period of five years
and indefinitely after that period, but may be terminated by either of the two
Governments at the end of that five-year period or at any time thereafter, provided
that at least six months prior notice of termination has been given in writing by
either Government to the other Government.
IN WITNESS WHEREOF the respective Plenipotentiaries have signed the present
Convention and have affixed hereunto their respective seals.
DoNE in duplicate at Ottawa this 8th day of February, 1951.
For the Government of the United States of America:
Stanley WOODWARD
For the Government of Canada :
Lionel CHEVRIER