supply & configuration of trans-receiver hand held 5 watt vhf set along with oem approved rechargeable battery, quick battery charger. helical antenna and belt clip conforming to rdso specification no. rdso / spn / tc / 107 / 2018 rev 0.0 ( with latest amendment ) with additional requirements ( 1 ) . spot frequencies - configurable as per consignee requirement. ( 2 ) . technical parameters of vhf set should be as per ci 5-a of rdso spec no. rdso / spn / tc / 107 / 2018 rev 0.0 ( with latest amendment ) . ( 3 ) . battery details- capacity minimum 2300 mah, battery type ni-mh. ( 4 ) . supply of one number of tuning kit with software to program shall be provided as spare. ( 5 ) . spare antenna for vhf set- 10 percent of total vhf set quantity antenna shall be provided as spare. ( 6 ) . warranty- ( a ) for radios and quick battery charger 5 years. ( b ) . for battery packs shall be for 1 year. [ warranty period: 60 months after the date of delivery ]