It depends. Most pilots will not require an external ADS-B antenna with Stratus portable receivers and can thus operate completely wire-free. Stratus portable receivers include a specially tuned, high-performance internal antenna that will get good reception in many aircraft. Some aircraft, however, may require a remote antenna due to signal attenuation caused by the aircraft type, altitude, and coverage. The position and mounting of the Stratus portable receiver will also impact ADS-B reception. If you find you need a remote antenna, you may purchase the external ADS-B antenna from Appareo’s Stratus accessory page.
