User's Guide

DE
DANIELS
ELECTRONICS
VT-3H040 VHF Enhanced Transmitter Instruction Manual 3
1.4 Performance Specifications
1.4.1 General
The following is a general set of specifications for the generic VT-3H040 transmitter. Additional
specifications, specific to individual modules may be found in their respective submanuals.
Type: MT-3 Series Transmitter
Family: VT-3H040
Compatibility: MT-2 Series and MT-3 Series Radio Systems
Frequency Range: 29.0 MHz to 50.0 MHz
RF Power Output: 3.0 Watt Fixed (± 1.5 dB with temperature and
supply voltage).
System Impedance: 50 Ω ; Type N connector.
Duty Cycle: 100%: Continuous operation from -30˚ C to +60˚C
(optional -40˚ C to +60˚C).
Harmonic Emissions: More than 90 dB below carrier.
Spurious Emissions: More than 80 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);
- linear output (separate lines only).
Modulation: 16K0F3E
Synthesizer Reference Frequency: 9.600000 MHz or 10.000000 MHz ; selectable.
Channel Spacing: 20 / 25 kHz
Frequency Stability: Standard: ±1 ppm, -30˚C to +60˚C,
optional -40˚C to +60˚C
Channel Selection: In 5 kHz or 6.25 kHz increments selected through
four internal BCD rotary switches. Preset capability
for 16 channel memory selectable through external
control.