Check the listing for details. Solarcon MaxOptimizer -The Ultimate Optimizable 10-11 Meter Base Station Antenna. Condition: New. Listed at 299.99 USD. We are selling Brand New - Sealed - Never Opened - Complete: Solarcon MaxOptimizer -The Ultimate Optimizable 10-11 Meter Base Station Antenna 5000 Watt Rated - New This is a upgrade to the already famous IMAX-2000 antennaIt is tunable to both 10 and 11 meters .For 11 meter or standard CB Radio be sure to include the included 12 inch Optimizer section turning this into a 4 piece antenna.For use with both 10 and11 meter radios ldo not install the 12" optimizer section turning this into a 3 piece antenna.Solarcon is well known across the CB and Ham Industries Specifications: Covers 26 MHz to 33.5 MHz using patented tuning rings and trimming the topsection; approximately twice the 2:1 SWR bandwidth as the A-99 / I-MAX 2000 (3MHz with SWR