This is not the place to acquire knowledge of legal requirements for border crossings and equipment usage in Canada.

Find Canadian government information sources you can hang your hat on.

The Canadian version of the FCC is called Industry Canada.

They regulate the use of transmitters in Canada and can tell you if your GPS locator systems are legal or not.

For ANYTHING of value (guns, electronics, cameras, etc), obtain at US Customs PRIOR to crossing a 'declaration of personal affects taken abroad' and have it properly endorsed by a customs agent. Else, you will be 'importing' it on the way back.

"The price of good shotgunnery is constant practice" - Fred Kimble