Specifications include, but are not limited to: The department requires a contract which covers all maintenance and repairs on base station and repeater station equipment except damage caused by lightning or other natural disasters. The contract shall cover all parts and labor on maintenance and repairs on the base equipment including, but not limited to, case, chassis, service on power supplies, duplexers, multicouplers, combiners, cavities, filters, and other system components except damage caused by intentional misuse or mischief. The contract shall cover all aftermarket accessories or modifications made to the base equipment. The contract shall also cover the below noted equipment on a twenty-four (24) hour basis at no extra charge if a service call is needed after normal business hours.