Performance Characteristics

• Frequency range

  VHF: 146-174 MHz;
  UHF: 403-410, 417-422, 433-450, 469-470 MHz

• Power

  8-40 watts (VHF); 8-60 watts (UHF)

• Channel spacing (kHz)

  12.5, 25

MTR3000 BASE STATION / Repeater VHF Specifications
General Specifications
T3000A – MTR3000 T2003A – Upgrade kit for MTR2000 stations
Number of Frequencies Up to 16
Modulation FM & 4FSK
Frequency Generation Synthesized
Channel Spacing Analog / Digital 12.5 kHz, 25 kHz, 30 kHz / 12.5 kHz (6.25e compliant)
Mode of Operation Simplex / Semi-Duplex / Duplex
Temperature Range –30ºC to +60ºC
Antenna Connectors Transmit and Receive, Type “N” Female
AC Operation 85-264 VAC, 47-63 Hz
DC Operation 28.6 VDC (25.7-30.7 VDC full rated output power)
Dimensions Weight
Base Station Repeater 5.25 x 19 x 16.5 in. (133 x 483 x 419 mm) 40 lbs (19 kg)
VHF Input Current (T3000A)
AC Line 117 Volts / 220 Volts 28 VDC D/C Battery
Revert, Neg. Gnd.
100 W Standby 0.4A / 0.4A 0.8A
100 W Transmit 3.5A / 1.9A 12.2A
Transmitter (VHF)
MTR3000 T2003A – Upgrade kit for MTR2000 stations
Frequency 136-174 MHz 136-154, 150-174 MHz
Power Output (Continuous Duty) 8-100 watts 1-30/40 watts, 25-100 watts
Electronic Bandwidth Full Band
Output Impedance 50 Ohms
Intermodulation Attenuation 55 dB 40 dB for 40W and 100W stations; 70 dB for 30W station
Maximum Deviation (RSD) 25 kHz / 12.5 kHz ±5 kHz / ±2.5 kHz
Audio Sensitivity 60% RSD @80 mV RMS
Spurious and Harmonic Emissions Attenuation 90 dB 85 dB
FM Hum and Noise (750 μs de-emphasis) 25 kHz / 12.5 kHz 50 dB (55 dB typical) / 45 dB (52 dB typical)
Frequency Stability (for temperature and aging variation) 1.5 PPM/External Ref (optional)
Audio Response +1/-3 dB from 6 dB per octave pre-emphasis; 300-3000 Hz referenced to 1000 Hz at line input
Audio Distortion Less than 3% (1% typical) at 1000 Hz; 60% RSD
Emission Designators FM Modulation: 12.5 kHz: 11K0F3E; 25 kHz,30 kHz: 16K0F3E
4FSK Modulation: 12.5 kHz – Data Only: 7K60FXD; 12.5 kHz – Data and Voice: 7K60FXE
Receiver (VHF)
MTR3000 T2003A – Upgrade kit for MTR2000 stations
Frequency 136-174 MHz
Selectivity (TIA603) 25 kHz / 12.5 kHz 80 dB (90 dB typical) / 75 dB (82 dB typical)
Selectivity (TIA603D) 25 kHz / 12.5 kHz 80 dB (90 dB typical) / 50 dB (60 dB typical)
Analog Sensitivity 12 dB SINAD 0.30 uV (0.22 uV typical)
Digital Sensitivity 5% BER 0.30 uV (0.20 uV typical)
Signal Displacement Bandwidth 25 kHz / 12.5 kHz 2 kHz / 1 kHz
Intermodulation Rejection 25 kHz and 12.5 kHz 85 dB
Spurious and Image Response Rejection 85 dB (95 dB typical)
Audio Response +1/-3 dB from 6 dB per octave pre-emphasis; 300-3000 Hz referenced to 1000 Hz at line output
Audio Distortion Less than 3% (1% typical) at 1000 Hz; 60% RSD
Line Output 330 mV (RMS) @ 60% RSD
FM Hum and Noise (750us de-emphasis) 25 kHz / 12.5 kHz 50 dB (56 dB typical) / 45 dB (52 dB typical)
RF Input Impedance 50 Ohms
FCC Type Acceptance
Frequency Range in MHz Model Type Power Output in Watts US Type Acceptance Number
136-174 T3000A Transmitter 8 – 100 ABZ89FC3793
136-174 T3000A Receiver N/A ABZ89FR3794
136-174 T2003A Transmitter 25 – 100 ABZ89FC3795
136-174 T2003A Receiver N/A ABZ89FR3796
136-174 T2003A Transmitter 1-30 / 40 ABZ89FC3797