Repeaters / Base Stations

TKR-851E

Key Features

UHF FM Repeater-Base Unit

16 Full-Duplex Channels & Single Priority Scan

Variable RF Output - 1 W to 25 W

Windows Programming & Tuning Software

External Control I/O via D-Sub Connector

Battery Back-Up System

Flash Memory For Firmware/System Upgrades

Durable Die-Cast Chassis Construction

Base Station & Repeater Features

5-Tone Selective Call	Yes
5-Tone/DTMF Over-The-Air Remote Control and Reporting	Yes
19" Rack Mount Design	Yes
Backup Power Features with Warnings	Yes
"Base Station" or "Repeater" Mode Operation	Yes
Base Station Features	Yes
Conventional or Trunked System Use	Yes
"Community Repeater" Ready	Yes
CW ID	Yes
Flash ROM for Future Upgrades	Yes
Front Mounted Speaker	Yes
Full-Duplex Operation	Yes
LED Display & Indicators	Yes
Programmable Features - 6 PF keys, 2 x LEDs, volume knob, speaker and tones	Yes
Repeater Features	Yes
Repeater Open/Close	Yes
Sel-Call and Status Call	Yes
Time-Out Timer	Yes
Windows Programming and Tuning Software	Yes

PMR General Features

5-Tone (multi-format)	Yes
Character Display (Numeric)	2 Characters
Compact Design	Yes
Companded Audio	Yes
DB-25 Accessory Connector	Yes
DTMF	Yes
Ease of Operating Use	Yes
Embedded Message	Yes
Emergency Call Function	Yes
Kenwood ESN (Electronic Serial Number)	Yes
Programmable Function Keys	6 Programmable Function Keys
PTT ID	Yes
QT (CTCSS) / DQT (digital)	Yes
Scan	Yes
SelCall Function	Yes
Time-Out Timer	Yes
Transceiver Password	Yes
Windows PC Programming and Tuning	Yes

PMR Construction Features

Yes

Options

Yes

Technical Specifications

Number of Channels	16
5-Tone Standard	EEA, ZVEI, CCIR, ZVEI-2, EIA, Kenwood propriatory
Antenna Impedance - 50 Ohm	Yes
Channel Spacing	Wide: 25 kHz Mid: 20 kHz (only "E Type") Narrow: 12.5 kHz
Current drain	Standby (Power Save): 0.3 A Receive: 1.2 A Transmit/Receive: ≤ 8 A
CW ID	Variable speed/tone frequency/modulation
CW Message	8 x 32 characters max.
Duty Cycle	Receive: 100% Transmit: 100%
Frequency Range - E Type	440-470 MHz
Frequency Range - E3 Type	400-430 MHz
Frequency Stability	± 1.5 ppm (-30 °C to + 60 °C)
Operating Modes	FM
Operating Temperature Range	-30 °C to + 60 °C
Operating Voltage	13.2 V DC ± 15% Negative Ground
PLL Channel Steps	5.0 kHz/6.25 kHz
Repeater Hold Time	From "Off" to 10 seconds
Test Tone	Variable modulation/frequency
Dimensions (WxHxD)	483 x 88 x 340 mm
Weight (net)	9.7 kg

Receiver Specifications

Adjacent Channel Selectivity	83 dB at 25 kHz 80 dB at 20 kHz (only "E Type") 75 dB at 12.5 kHz
Audio Output	4 W with less than 5% distortion
Circuitry - Double Conversion Superheterodyne	Yes
Intermodulation	72 dB
Sensitivity - EN 20 dB SINAD	0.45 µV
Spurious Reponse Rejection (Analogue)	90 dB

Transmitter Specifications

Microphone Impedance	600 Ohm
Modulation Distortion	Less than 3%
Modulation Limiting	± 5 kHz at 25 kHz ± 4 kHz at 20 kHz (only "E Type") ± 2.5 kHz at 12.5 kHz
RF Power Output	1 W to 25 W
Spurious Emission (EN)	-36 dBm ≤ 1 GHz -30 dBm > 1 GHz