I am liking the repeater idea, especially the one you linked. I will need one with dual receivers. One for outside and one for my main listening area. Two things;
1. I am just curious about tough the receivers are, the outside receiver will have to endure high temperature in the summer (35C + direct sun) and -30C in winter. Will direct sunlight interfere? I am sure I can devise something for that
2. I am in southern ontario, need to find where to get what I need.