Codan Radio Communications UT-4D400 Manual Do Utilizador

P25 Digital UHF Transmitter Instruction Manual
IM23-001

General Information

UT-4D400 Transmitter Family Models

There are four distinct models in the UT-4D400 Transmitter family each with different bands of 
operation and power outputs.  The four models are as follows:

 

• UT-4D420-2 

406-430 MHz band, 0.5-2.0 Watt

 

• UT-4D420-8 

406-430 MHz band, 2.0-8.0 Watt

 

• UT-4D460-2 

450-470 MHz band, 0.5-2.0 Watt

 

• UT-4D460-8 

450-470 MHz band, 2.0-8.0 Watt

The transmitters’ band of operation is determined by select components in the amplifi er.

 

Performance Specifi cations

General

The following is a general set of specifi cations for the generic UT-4D400 transmitter. Additional 
specifi cations, specifi c to individual modules may be found in their respective sub manuals.

Type: MT-4D 

Series 

Transmitter.

Family: 

UT-4 406 - 470 MHz.

Compatibility: 

MT-2, MT-3 and MT-4 Series Radio Systems, Project 25 
interoperable.

Frequency Range: 

406 to 430 MHz., 450 to 470 MHz

RF Power Output: 

 0.5 to 2.0 or 2.0 to 8.0 W Continuous.

Modulation: 

Analog:   

11K0F3E or 16K0F3E (Frequency Modulation).

Project 25: 

8K10F1E

System Impedance: 

50 Ω; Type N connector.

Duty Cycle: 

100%; Continuous operation from -30°C to +60°C.

Emissions: -70 

dBc

Transmitter Mismatch Protection: 

20:1 VSWR at all phase angles.

Operating Temperature Range: 

-30˚C to +60˚C.

Operating Humidity: 

95% RH (non-condensing) at +25°C.

Operating Voltage: 

+13.8 Vdc Nominal (range +10 to +17 Vdc),
+9.5 Vdc Regulated.

Transmit Current: 

1.7 Amps at 2 Watts RF Power Output,
2.8 Amps at 8 Watts RF Power Output

Front Panel Controls: 

NORM (repeat mode), OFF, and KEY TX (Tx on).
MIC MODE: ANALOG and DIGITAL.

PTT Activation: 

Active to ground; Microphone activated;
Front Panel switch: 

KEY TX