Kenwood TKR-751 Brochure & Specs

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Kenwood TKR-751 Brochure & Specs Manual pdf 1 page image

CONVENTIONAL REPEATER OPERATIONThe TKR-751/851 is “community repeater-ready” with abuilt-in internal 16 QT/DQT group controller andprogrammable repeater functions such as CWTransmitter ID, Hang-Timer, Time-Out-Timer and RepeatEnable/Disable Key. The 1W-to-25W adjustable outputpower is ideal for on-site low power repeater applications.CONVENTIONAL OR TRUNKING SYSTEM USEThe TKR-751/851 can serve as the core element of aconventional or trunking repeater system. The internalconventional controller can be used, or an externalconventional or trunking logic controller can be easilyinterfaced for advanced systems.SIMPLEX OR DUPLEX BASE STATIONOPERATIONThe TKR-751/851 can be operated in simplex orfull-duplex base station mode with up to 16 channelsand priority scan. Internal solid state antenna switchingis provided for simplex single-antenna base stationoperation. The accessory connectors provide remotecontrol interface. Also programmable are the six PFfunction keys, LED indicators, control/warning/alert/power-on tones and tone volume for facilitating anyremote site installation.DTMF OVER-THE-AIR REMOTE CONTROLAll front panel PF Key functions and AUX Inputfunctions can be remotely activated and deactivatedover-the-air via DTMF codes (up to 16 digits each) andprovide an acknowledgement single tone or customDTMF transpond code. Also AUX Inputs, upon activationand deactivation will encode unique DTMF codes formonitoring and alarm purposes.LED DISPLAY & INDICATORSThe enhanced 7-segment/2-character front panel LEDprovides 2-character alphanumeric channel designatorand scan indicator for base station operation, a PLLunlock indicator and a PC program mode status. Frontpanel dual-color LED’s provide Transmit, Busy,Primary/Backup DC Power indications.BACKUP POWER FEATURESThe Backup Battery Warning Tone transmits an over-the-air5-second tone after DC supply has switched from“main’’ to “backup’’ power. Optionally a reminderOperation Tone can be transmitted while on backuppower. These tones can be triggered when either DCpower is connected to the “backup’’ DC input line orwhen the supplied voltage is lower than the programmedPower Supply Level DC voltage setting.REPEATER FEATURES• Full-Duplex Operation• Built-in 16 QT/DQT Tone/Code Pair CommunityRepeater Operation• External Controller Interface• Conventional or Trunking Controller Compatible• Repeat Enable/Disable• 8 CW Transmitter IDs• Repeat Hold Timer (hang timer)• Time Out TimerBASE STATION FEATURES• 16 Channel• Simplex or Full Duplex Operation• Antenna Switch For Simplex/Single Antenna Operation• Priority Scan• Remote Control Inputs• 7-Segment 2-Character Channel & Scan LED• 2 Character Alphanumeric Channel Designator• Power/Transmit/Busy LED Indicators• 6 Lighted PF Keys• Local Takeover/Remote PF Key• Channel Up/Down PF Keys• Volume Control Knob• Courtesy Tone• Front Microphone Jack• Front Panel Speaker• Voice Encryption PortGENERAL• 19" Rack Mount Design• Primary DC Input Connector• Auto-Switched Back-up DC Input Connector• Backup Battery Warning/Operation Tones• Rear External Speaker Output (4 Watts Audio)• Rear Test-Speaker-AUX Connector (15-Pin)• Built-in Cooling Fan (temperature or continuous)• Programmable AUX Input/Output Functions• BCD Remote Channel Selection (4 lines)• Toggle or Momentary Operation on AUX Input Ports• Pre-Emphasis On/Off Control (at TA AUX Input)• DSP Processed QT/DQT• DSP Processed Companded Audio• QT/DQT Squelch-Tail Elimination• Beep Tones for Control, Warning, Alert & Power On• Electronic Serial Number (ESN)• Embedded Message with Password Protection• High Stability Oscillators (TCXO)• Windows® 98/2000/Me/XP PC programming & tuning• Flash MemoryTKR-751/851VHF/UHF FM Repeater-Base UnitsA versatile unit, the TKR-751/851 is a16-user group conventional repeater, asimplex or full duplex base station or theRF core of a trunking system. Advancedfeatures include DSP audio processing,DTMF over-the-air remote control andprogrammable Auxiliary I/O’s.

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