TN287 UR-4E UHF 700 / 800 / 900 MHz MT-4E Receiver
MT-4 Radio Systems
TECHNICAL NOTES
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LMRSALES@CODANCOMMS.COM
CODANCOMMS.COMTECHNICAL NOTE:
TN287, REV 5-1-0, © Mar 2013
CANADA/US +1 250 382 8268 | TOLL FREE +1 800 664 4066
The UR-4E UHF 700 / 800 / 900 MHz receiver is an FM radio module capable of analog
operation in 12.5 KHz (narrowband) or 25 KHz (wideband) channels. A fi rmware upgrade may
be purchased to allow P25 digital operation. The UR-4E UHF 700 / 800 / 900 MHz receiver
operates in one of fi ve frequency bands: 768 to 776 MHz, 798 to 824 MHz, 851 to 869 MHz,
896 to 902 MHz or 930 to 960 MHz. A modular design allows each of the receiver’s internal
modules to be individually assembled and tested. This facilitates construction, tuning and
maintenance as well as troubleshooting procedures. The receiver can be programmed with
up to 2 banks of 16 channels each.
RECEIVER
NORM
SQ. DISABLE
OFF
CNTL
BUS
AD
RF NI
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA
MODEL # CODE
Specifi cations
Frequency Bands 768 - 776 / 798 - 824 / 851 - 869 / 896 - 902 / 930 - 960 MHz
Channel Spacing 12.5 and 25 KHz
Frequency Switching Range Full Band
Reference Sensitivity ≤ -116 dBm (.350 μV)
(12 dB SINAD and 5% BER)
Adjacent Channel Rejection ≥ 45 dB; NB Analog / ≥ 70 dB; WB Analog / ≥ 60 dB; Digital
Conducted Spurious Output Power (Analog) ≤ -80 dBm
Intermodulation Rejection ≥ 70 dB
Hum & Noise Ratio ≥ 31 dB Narrowband / ≥ 37 dB Wideband
L.O. Frequency Stability ± 0.1 ppm (-30°C to +60°C)
Audio Distortion (Analog and Digital) ≤ 3.0 % (25°C); ≤ 5.0 % (-30°C to +60°C)
Audio Output Level (600 Balanced) ≤ +3.0 dBm
Operating Temperature -30°C to +60°C
Supply Current ≤ 200 mA / ≤ 230 mA with encryption module
Models Available
UR-4E768-00-000 12.5 / 25 KHz Bandwidth, 768 - 776 MHz, Class B
UR-4E800-00-000 12.5 / 25 KHz Bandwidth, 798 - 824 MHz, Class B
UR-4E850-00-000 12.5 / 25 KHz Bandwidth, 851 - 869 MHz, Class B
UR-4E900-00-000 12.5 / 25 KHz Bandwidth, 896 - 902 MHz, Class B
UR-4E950-00-000 12.5 / 25 KHz Bandwidth, 930 - 960 MHz, Class B
Receiver Operating Frequency
The receiver is initially aligned at the factory for the center of the frequency range and is programmed for the
frequency shown on the label on the front panel. No re-alignment of the receiver is required to change frequencies.
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