What is the length of the SN-UL-AK20L Outdoor antenna? EnGenius Updated October 04, 2017 22:57 Follow The entire length of the antenna including the mounting pipe below the antenna is 34 inches. Related articles Optional SN-UL-AK20L Outdoor Antenna Installation Instructions EnGenius in the past was designing a repeater to extend the range even further, is there any update on the availability? Can I change the frequency of my DurafonPRO system? Refreshing Mountain Retreat and the EnGenius Neutron Series How do I set date and time on DuraFon PRO handset since there is date and time stamp on received call logs? Comments 0 comments Please sign in to leave a comment.