159Functions to Use as NecessaryFunctions to Use as NecessaryUsing the Transceiver for Packet CommunicationYou can perform packet communication with your transceiver by connecting a TNC(Terminal Node Controller) using an optional Microphone Adapter (CT-44).TNCSPGNDGND2 kΩ10 FȣMICMICEARPTTTNCSPGNDGND2 kΩ10 FȣMICMICEARPTTAfter connecting the TNC to the transceiver, set the output signal level to the TNC byadjusting the sound volume level of your transceiver.Also, adjust the signal level input to your transceiver using the output level adjustmentvolume on the TNC (Input level cannot be adjusted on your transceiver).CautionWhen sending a vast volume of data, the transmission takes a longer time and the transceiver may beoverheated. If the transmission is continued for a long time, the overheat prevention circuit will operateand the transmission power decreases. If the transmission is continued further, the transmission will beautomatically stopped to prevent the transceiver from overheating and consequently malfunctioning. Ifthe overheat prevention circuit has operated and then the transceiver returns to the receive mode, turnthe transceiver off, or leave it in the receive mode until the temperature falls.Tips• Set the receive battery Save Function to OFF during packet communication by selecting [CONFIG]→ [17 SAVE RX] in the Set mode.• Reception can be interfered with by noise generated from your PC.• If the transceiver enters an abnormal receive state, disconnect the transceiver from the PC, andreconnect it to the PC using a photo coupler device or noise filter.• For details on how to connect TNC to the PC, refer to the TNC instruction manual.
