User's Guide

DE
DANIELS
ELECTRONICS
UHF Transmitter Instruction Manual UT-3 406 - 512 MHz 1-3
1.4 Performance Specifications
1.4.1 General
The following is a general set of specifications for the generic UT-3/400 transmitter. Additional
specifications, specific to individual modules may be found in their respective submanuals.
Type: MT-3 Series Transmitter.
Family: UT-3 406 - 512 MHz.
Compatibility: MT-2 Series and MT-3 Series Radio Systems.
Frequency Range: 406 to 512 MHz (406 to 406.1 MHz unavailable, see note below).
RF Power Output: Continuously Adjustable: 0.5 to 2.0 W or 2.0 to 8.0 W.
Modulation: 11K0F3E or 16K0F3E (Frequency Modulation).
System Impedance: 50 Ω; Type N connector.
Duty Cycle: 100%; Continuous operation from -40°C to +60°C.
Spurious Emissions: More than 80 dB below carrier.
Harmonic Emissions: More than 90 dB below carrier.
Transmitter Mismatch Protection: 20:1 VSWR at all phase angles.
Transmitter Alarm: Forward power sense and reverse VSWR;
• open collector output (separate or 'OR'ed configuration);
• linear output (separate lines only).
Operating Temperature Range: -30˚C to +60˚C, optional -40˚C temperature test.
Operating Humidity: 95% RH (non-condensing) at +25°C.
Operating Voltage: +13.8 Vdc Nominal (range +11 to +16 Vdc),
+9.5 Vdc Regulated.
Transmit Current: 1.2 Amps at 2 Watts RF Power Output,
2.5 Amps at 8 Watts RF Power Output
Front Panel Controls: NORM (repeat mode), OFF, and KEY TX (Tx on).
PTT Activation: • Active to ground with or without time-out-timer;
• Microphone activated with or without time-out-timer;
• Front Panel switch: KEY TX - without time-out-timer;
• NORM - with or without time-out-timer.
• Isolated (optional relay) with or without time-out-timer.