TN267 UR-4E UHF MT-4E Receiver
MT-4 Radio Systems
TECHNICAL NOTES
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LMRSALES@CODANCOMMS.COM
CODANCOMMS.COMTECHNICAL NOTE:
TN267, REV 7-1-0, © Mar 2013
CANADA/US +1 250 382 8268 | TOLL FREE +1 800 664 4066
The UR-4E UHF 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 receiver operates in one of fi ve frequency bands: 380
to 406 MHz, 406 to 430 MHz, 430 to 450 MHz, 450 to 470 MHz or 470 to 520 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 380 - 406 / 406 - 430 / 430 - 450 / 450 - 470 / 470 - 520 MHz
Channel Spacing 12.5 and 25 KHz
Frequency Switching Range ± 2 MHz
Reference Sensitivity ≤ -116 dBm (.350 μV) 380 & 440 & 500
(12 dB SINAD and 5% BER) ≤ -118 dBm (.280 μV) 420 & 460
Adjacent Channel Rejection (Class A) ≥ 45 dB; NB Analog / ≥ 75 dB; WB Analog / ≥ 60 dB; Digital
Adjacent Channel Rejection (Class B) ≥ 40 dB; NB Analog / ≥ 70 dB; WB Analog / ≥ 60 dB; Digital
Conducted Spurious Output Power (Analog) ≤ -95 dBm (Class A & 380 & 440) / ≤ -80 dBm (500)
≤ -57 dBm (Class B)
Intermodulation Rejection ≥ 75 dB Analog / ≥ 80 dB Digital (Class A & 380 & 440)
≥ 70 dB Analog / ≥ 70 dB Digital (Class B)
Hum & Noise Ratio ≥ 34 dB Narrowband / ≥ 40 dB Wideband
L.O. Frequency Stability ± 0.5 ppm (-30°C to +60°C)
Audio Distortion (Analog and Digital) ≤ 2.0 % (25°C); ≤ 3.0 % (-30°C to +60°C)
Audio Output Level (600 Balanced) ≤ +3.0 dBm
Operating Temperature -30°C to +60°C
Supply Current (Class A) ≤ 250 mA / ≤ 280 mA with encryption module
Supply Current (Class B) ≤ 115 mA / ≤ 145 mA with encryption module
Supply Current (380 & 440) ≤ 270 mA / ≤ 300 mA with encryption module
Models Available
UR-4E380-00-000 12.5 / 25 KHz Bandwidth, 380 - 406 MHz, Class B
UR-4E420-A0-000 12.5 / 25 KHz Bandwidth, 406 - 430 MHz, Class A
UR-4E420-00-000 12.5 / 25 KHz Bandwidth, 406 - 430 MHz, Class B
UR-4E440-00-000 12.5 / 25 KHz Bandwidth, 430 - 450 MHz, Class B
UR-4E460-A0-000 12.5 / 25 KHz Bandwidth, 450 - 470 MHz, Class A
UR-4E460-00-000 12.5 / 25 KHz Bandwidth, 450 - 470 MHz, Class B
UR-4E500-00-000 12.5 / 25 KHz Bandwidth, 470 - 520 MHz, Class B * Not available in Canada
Receiver Operating Frequency
The receiver is initially aligned at the factory for the frequency shown on the label on the front panel. For a small
frequency change, no re-alignment of the receiver may be required. If the frequency change is greater than ±2 MHz
from the frequency at which the last complete receiver alignment was performed, the RF Preselector will need to
be realigned. To align and / or adjust the receiver, the outer cover needs to be removed; the receiver needs to be
plugged into the subrack via a cable and / or extender card; and power must be applied to the system.
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