Garmin GT20-TMXdcr8pin16deg Tilted DownVu New Condition 010-01960-01. 500 Watts CHIRP 455/800 KHz 500 Watts traditional 77/200 KHz. Features of Garmin GT20-TM Xdcr 8pin 16deg Tilted DownVu: Frequencies: Traditional 77/200; Cleave CHIRP 455 kHz (435-475...