Multiple modes Conventional and MPT Trunking features are built-in. Operating modes are selectable by preprogrammed short- cut keys. Talk Around feature could be programmed as automatically start once there is no signal for MPT trunking system. Upgradeable Software Flash memory enables future system upgrades. 6 System Settings Up to 6 system settings with different personalities, such as contacts, conventional channels, control channels, MPT talking channel schemes and so on, offer great roaming possibilities to the PT-6800. 32 Conventional Channels with Alias 64 MPT Control Channels with Priority 20 MPT Turnking Channel Schemes Full Dot-matrix Display 32*128 LCD with full dot-matrix and 11 icons offers more convenience in operation on the utilities menu. Message and status of the radio could be read easily, such as the signal strength and battery capacity. Password protection The reading and programming on radio data, and the power-on of the radio could be protected by password to ensure the security and prevent data reveal. Audio Compander The built-in audio compander could be switched on or off for each channel to reduces noise and provides clear reception. MIL Grade Durability The rugged construction designed to meet MIL STD 810 C/D/E/F allows the radio to be used in harsh environment and could be took rough treatment Optional large capacity battery and Longer Working Hours The optional 1750 mAh Li-poly battery and low standby current in MPT trunking mode enables longer stand-by and working time. Multiple PLL Steps 2.5 kHz, 5 kHz and 6.25 kHz could be used for MPT trunking and conventional channel frequency assignment for greater efficiency in frequency resources. CTCSS/DCS Encoder/Decoder Built-in CTCSS/DCS Encoder/Decoder can prevent co-channel interference and unwanted conversations on the same frequency and ensure smooth communication in both conventional and MPT trunking mode. High/Low Power Switch The TX power could be programmed as high or low per channel. And it could be switched in MPT trunking mode by function menu. Keypad/LCD Back-lit Switch The backlit of LCD and keypad could be switched on or off for night time operations or less power consumption. Scan and DTMF dialing in conventional mode Busy Channel Lockout (BCLO) BCLO is used to prevent the interference with the on-going conversation. If BCLO is on, the radio will be remaining in receiving status even with PTT pressed to avoid interfering with others on conversation. Time-out Timer (TOT) When TOT is on and the transmission exceeds the preset time limit, the radio will stop after warning tone. TOT can prevent the radio from any potential damage caused by overlong transmission. Rapid Log-on Search & Background Search Multi-scanning in different setting helps the radio search out the base station quickly. The radio could as well log-on the base station with strongest signal at any time. PT-6800 could even switch to different system manually according to preset 64 system code with alias. Customizable Function Menu The function menu used for settings on most functions could be customized by programming software according to different authorization. Contact List & Home Address The radio could save up to 200 contacts in the contact list for quickly dial and Caller ID service. And home address feature allows one-key dial-out while stand-by. Programmable Short-cuts Up to 9 programmable short-cuts offers easy-to-access on most daily use functions. One-key Emergency Call Orange emergency button on top of the radio enables prompt call for help under critical circumstances. Remote Kill/Activate If the radio is killed, all attempts on operation by user, except power on/off, will be ignored. The radio will be activated only when it received the correct instruction from MPT trunking control center. Dynamic Grouping For temporarily communication among radios from different groups, the base station could quickly group those radios as a new team by sending a remote instruction. Short Data Message 32 short data messages enable more convenience in daily use. Message with up to 100 characters could be read from large LCD. Call List Up to 10 last dialed numbers could be saved even in power failure for redialing. And there are also 10 phone number could be preprogrammed for quick dialing. Versatile Calls With support of the MPT trunking system, PT-6800 could realize short data message call, individual/group call, broadcasting call, priority call, PABX/PSTN call etc. Call Restriction To increase the conversation efficiency among group, the radio could be programmed to call authorized units or groups only. The radio could be set as non-disturb status or to transfer all incoming call to assigned unit for special conditions.