ICOM DS-100 DSC Controller f/Marine VHF IC-M501 IC-M501EURO - NEW IN BOX! RARE!ICOM DS 100 DSC Controller f Marine VHF IC M501 IC M501EURO BRAND NEW IN ORIGINAL BOX WITH ALL ACCESSORIES. VERY RARE UNIT! FULL WARRANTY! ***** DS 100 VHF DSC controller and watchkeeping receiver The DS 100 is an independent VHF DSC Class D controller with built in in Ch 70 watch keeping receiver. Designed to compliment the IC M501, the DS 100 is compact and very easy to use. The DS 100 is an independent Class D DSC controller with a built in Channel