A gasketed sealed Polycarbonate enclosure mounted at the base of the antenna sports two shunt coils switched through a relay. An 8 turn shunt coil covers 10-80 meters, the 16 turn shunt coil covers 160 meters. The relay is controlled via a switch mounted on our antenna control box. Perfect tuning on any band! Standard finish is stainless steel or available in the Black Widow gloss black finish. Covers 10 through 160 meters with supplied 6 foot whip. Length retracted: 47” Extended: 73” “measured to top of whip mounting coupling nut”. 3 inch diameter coil with 14 gage tinned copper wire wound at 10 TPI. Mobile or backyard typical vswr 1.5:1 or less. Antenna rated at 1500 watts PEP SSB. Weight 18 Lbs. Our antenna line is supplied with an N type connector along with a female UHF screw on adaptor.