http://www.spooky2-mall.com/ – This video replies the question: How far away can remote mode be effective. Distance is irrelevant. We live in Texas, USA and was able to treat someone in the Philippines. There should be no problem treating your grandfather in Ontario.
Distance of electromagnetic waves (radio) traveling is limited to the power of the transmitter. Scalar waves, used in Spooky remote, have no limit as far as we know, or at least they cover the whole Earth.