148AppendixIf you suspect malfunctionThe battery pack cannot be charged or batterypower depletes immediately after charging.Is the battery pack being charged with a charger specified by Yaesu?Charge the battery pack using the accessory battery charger (PA-48B or SAD-11B) or the rapid chargecradle (CD-41).When using a external power supply, use the external power supply adapter with a cigarette lighterplug (E-DC-5B) or an external power cable (E-DC-6).Is the battery pack in use exhausted?If the “Charging Error” appears on the LCD when charging, there is a chance the battery pack is overdischarged. If the error is repetitively displayed after charging the battery pack several times, thebattery pack may have reached its service life or defective. Battery packs are consumables. Pleasereplace the battery pack with a new one immediately. Battery packs can be charged and reused up toapproximately 300 times.Depending on the combination for simultaneous reception, there may be internal beats from highfrequencies caused by the internal oscillator. This is not a malfunction. (See the calculation formula below:“n” is for the arbitrary integer). Depending on the combination for simultaneous reception, there may befluctuations in reception sensitivity.Reception Frequency = 16 MHz × n multiplicativeReception Frequency = 15.6 MHz × n multiplicativeReception Frequency = 4.9152 MHz × n multiplicativeReception Frequency = 15.6 MHz × n multiplicativeReception Frequency = 18.432 MHz × n multiplicativeUpper Side (A-Band) Frequency = (Lower Side (B-band) Frequency ± 46.35 MHz) × n multiplicativeUpper Side (A-Band) Frequency = (Lower Side (B-band) Frequency ± 47.25 MHz) × n multiplicative@ Upper Side (A-band) Mode = NFM