Vexilar 19 Ice Ducer Transducer [TB0050]19 Ice Ducer Transducer Ice Ducers have revolutionized the way anglers use sonar for ice fishing. The ease of use along with the reliable performance took away much of the former problems with seeing the bait, a most important requirement for ice anglers. Additionally, anglers can easily jump from hole to hole in an effort to find and catch fish on the move. Vexilar offers the Ice Ducer in four beam angles; 19 degree, 12 degree, 9 degree (Pro View),