The best reception available at any given location can be tested and experienced with one TV connected. More TVs will divide the available signal strength proportionally. 100% of your signal strength can be delivered to one TV. The signal strength will be divided by 50% for 2 TVs, 33% for 3 TVs. If you're not getting good reception on multiple TVs, disconnect all TVs except your main TV and the rescan for new channels.