Services Sterling Communications offers a full line of Motorola and Kenwood 2-way radios to meet your communication requirements. Hilltop Repeaters Installation Repair Accessories Telemetry Systems Hilltop Repeaters Sterling provides and manages both conventional and trunked services for extended coverage. Installation Professional installation can be performed at the customer site or in-house. Repair Sterling provides an in-house repair service for all radios. We facilitate warranty service for both Motorola and Kenwood radios. Out-of-warranty can be facilitated as well. Accessories Full Line Motorola and Kenwood. Telemetry Systems Installation and maintenace of Telemetry systems for pump stations and reservoirs.