A:Answer Hi Bob, thank you for your question. You most definitely do not need a rotor, but can use one if you would like. Our antennas are multi-directional, meaning they will receive signals from the front and the back of the antenna, so a rotor is not necessary for use with our antennas. If you have any farther questions we are here 7 days a week at 877-825-5572 to help. Thank you!