notice inviting tender for procurement of walkie talkie for railway yard at trombay unit , supply material at rcf trombay unit , walkie talkie handset : motorola make uhf trans-receiver model no . xirp3688 , operating license charges for 5 set walkie-talkie in lumpsum price , royalty and license fee for 5 set walkie talkie in lumpsum price per year . , comprehensive annual maintenance charges for first year ( after completion of guarantee period ) , comprehensive annual maintenance charges for second year ( after completion of guarantee period ) , comprehensive annual maintenance charges for third year ( after completion of guarantee period )