supply of vhf base station walkietalkie sets and accessories with two years warranty followed by two years annual maintenance contract , supply ofvhf base station and walkie-talkie sets and accessories with two(2) years warranty followed by 02(two) years maintenance. , supply of vhf base station sets along with incorporation of the sets into existing or new vhf licenses of wbsedcl , supply of vhf walkie-talkie sets with all accessories including battery and chargerwith incorporation of the sets into existing or new vhf licenses of wbsedcl , comprehensive maintenance (3rd and 4th year)of all vhf base station,walkie talkie sets and accessories for 02(two) years from the last date of end of warranty of vhf base station,walkie talkie sets.