Atlas PT Technical Manual4312.1 AntennaA broken antenna can cause severe damage to the GPS transponder. Before use,verify the antenna is intact. Immediately after turning on, verify that the RSSI at anearby base station is strong, poor signal strength indicates a failed antenna and whichmust be replaced before resuming operation of the unit.12.2 BatteryLithium-Ion battery packs are susceptible to damage on sudden impact, extreme heat orcold. Do not exceed the specifications laid out in the document or battery failure willoccur.Batteries must be stored at least 80% charged and should not be stored withoutcharging for longer than three months.The radio is equipped to detect many battery failure conditions. If one of these isdetected, the radio LEDs will blink red when charging is attempted. If this occurs, stopuse of the radio immediately and contact your local dealer for repair or disposalinformation. Not all battery failures can be detected. If the specifications of the radio areviolated, discontinue use and contact your dealer for repair as above.To ensure safe and proper operation of your radio, batteries should be replaced after500 charge-discharge cycles or 30 months of ownership, whichever comes first. Thebatteries are not user-replaceable. Contact your dealer for battery replacement pricingand instructions.When shipping any potentially damaged batteries, surface-only (non-air) carriers mustbe used.12.3 External Battery PortThe External Battery Port must be cleaned after every use. If not cleaned, dirt build-upwill occur and cause damage to the port. Use a cotton swab or compressed air toremove any dust and debris immediately following use.When not in use, the port cover must be in place. Using the radio without the port coverin place will cause damage to the external battery port.12.4 Serial I/O ConnectorThe Serial I/O Connector must be cleaned after every use. If not cleaned, dirt build-upwill occur and cause damage to the port. Use compressed air to blow any dust anddebris out of the connector immediately following use.When not in use, the connector cover must be in place. Using the radio without thecover in place will cause damage to the connector.12.5 Bottom DC Power PortThe Bottom DC Power Port will accumulate dirt, dust and debris during use. Beforecharging the unit with the bottom port, it must be cleaned out using a cotton swab andcompressed air.