Kenwood TKR-851, TKR-751 User Manual

TKR-751/851
VHF/UHF FM Repeater-Base Units
A versatile unit, the TKR-751/851 is a 16-user group conventional repeater, a simplex or full duplex base station or the RF core of a trunking system. Advanced features include DSP audio processing, DTMF over-the-air remote control and programmable Auxiliary I/O’s.
CONVENTIONAL REPEATER OPERATION
The TKR-751/851 is “community repeater-ready” with a built-in internal 16 QT/DQT group controller and programmable repeater functions such as CW Transmitter ID, Hang-Timer, Time-Out-Timer and Repeat Enable/Disable Key. The 1W-to-25W adjustable output power is ideal for on-site low power repeater applications.
CONVENTIONAL OR TRUNKING SYSTEM USE
SIMPLEX OR DUPLEX BASE STATION OPERATION
The TKR-751/851 can be operated in simplex or full-duplex base station mode with up to 16 channels and priority scan. Internal solid state antenna switching is provided for simplex single-antenna base station operation. The accessory connectors provide remote control interface. Also programmable are the six PF function keys, LED indicators, control/warning/alert/ power-on tones and tone volume for facilitating any remote site installation.
DTMF OVER-THE-AIR REMOTE CONTROL
All front panel PF Key functions and AUX Input functions can be remotely activated and deactivated over-the-air via DTMF codes (up to 16 digits each) and provide an acknowledgement single tone or custom DTMF transpond code. Also AUX Inputs, upon activation and deactivation will encode unique DTMF codes for monitoring and alarm purposes.
LED DISPLAY & INDICATORS
The enhanced 7-segment/2-character front panel LED provides 2-character alphanumeric channel designator and scan indicator for base station operation, a PLL unlock indicator and a PC program mode status. Front panel dual-color LED’s provide Transmit, Busy, Primary/Backup DC Power indications.
BACKUP POWER FEATURES
The Backup Battery Warning Tone transmits an over-the-air 5-second tone after DC supply has switched from “main’’ to “backup’’ power. Optionally a reminder Operation Tone can be transmitted while on backup power. These tones can be triggered when either DC power is connected to the “backup’’ DC input line or when the supplied voltage is lower than the programmed Power Supply Level DC voltage setting.
REPEATER FEATURES
Full-Duplex Operation
Built-in 16 QT/DQT Tone/Code Pair Community
Repeater Operation
External Controller Interface
Conventional or Trunking Controller Compatible
Repeat Enable/Disable
8 CW Transmitter IDs
Repeat Hold Timer (hang timer)
Time Out Timer
BASE 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 Port
GENERAL
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 Memory
Options
JQA-QMA1205
KMC-27A
Microphone (with Noise Canceling)
Specifications
KMC-27B
Microphone
KMC-9C
Desktop Microphone
KES-5
External Speaker
* Not all accessories may be available, please contact dealers for details.
Kenwood USA Corporation is committed to a policy of constant improvement in features, quality and performance. To accommodate these improvements, all technical information and specifications are subject to change without notice. Custom options and configurations are available, if needed. For more information, call 1-800-TRUNKING.
ADS#40305 Printed in USA
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