TKR-750/850
VHF/UHF FM Repeater-Base Units
DTMF OVER-THE-AIR REMOTE CONTROL
BASE STATION FEATURES
• 16 Channel
A versatile unit, the TKR-750/850 is a
16-user group conventional repeater, a
simplex or full duplex base station or the
RF core of a trunking system. Advanced
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
• Simplex or Full Duplex Operation
• Antenna Switch For Simplex/Single Antenna Operation
• Priority Scan
• Remote Control Inputs
features include DSP audio processing, DTMF transpond code. Also AUX Inputs, upon activation
• 7-Segment 2-Character Channel & Scan LED
• 2 Character Alphanumeric Channel Designator
• Power/Transmit/Busy LED Indicators
• 6 Lighted PF Keys
and deactivation will encode unique DTMF codes for
DTMF over-the-air remote control and
programmable Auxiliary I/O’s.
monitoring and alarm purposes.
LED DISPLAY & INDICATORS
• Local Takeover/Remote PF Key
• Channel Up/Down PF Keys
• Volume Control Knob
The enhanced 7-segment/2-character front panel LED
CONVENTIONAL REPEATER OPERATION
provides 2-character alphanumeric channel designator
The TKR-750/850 are “community repeater-ready” with
and scan indicator for base station operation, a PLL
a built-in internal 16 QT/DQT group controller and
• Courtesy Tone
unlock indicator and a PC program mode status. Front
programmable repeater functions such as CW
• Front Microphone Jack
panel dual-color LED’s provide Transmit, Busy,
Transmitter ID, Hang-Timer, Time-Out-Timer and Repeat
• Front Panel Speaker
Primary/Backup DC Power indications.
Enable/Disable Key. The 15W-to-50W (TKR-850:
• Voice Encryption Port
15W-to-40W) adjustable output power is ideal for
on-site low power repeater applications.
BACKUP POWER FEATURES
GENERAL
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
• 19" Rack Mount Design
• Primary DC Input Connector
• Auto-Switched Back-up DC Input Connector
• Backup Battery Warning/Operation Tones
CONVENTIONAL OR TRUNKING SYSTEM USE
The TKR-750/850 can serve as the core element of any
conventional or trunking repeater system. The internal
conventional controller can be used, or an external
conventional or trunking logic controller can be easily
interfaced for advanced systems.
power. These tones can be triggered when either DC • 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
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.
SIMPLEX OR DUPLEX BASE STATION
OPERATION
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
The TKR-750/850 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.
• 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
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