STUBBY TUNED DUCKS Super efficient VHf of UHf antennas. Strong and flexible, sealed in synthetic rubber and MPQ-2000 coverings. Available from 136 - 174 MHz 3db gain. This new flex coil matching network provides at band center low SWR as well as a +or - 5 MHz band center. (Example an antenna tuned at 146 being the band center, the antenna will perform the same between 141-151 MHz.) For custom frequency call 1-800-527-5439 or email sales@smileyantenna.com. 4 1/2"