Codan Radio Communications VT-3H040-S-HSO User Manual

VT-3H040 VHF Enhanced Transmitter Instruction Manual 

3 

 

 
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.