Coastal Observing Research and Development Center

Radiated Signal Specifications

 

mid-range surface current mapping
Mid-range Antenna Specifications
(quantity 2 antennas) Transmit Antenna
  • 28' high
  • One 16' vertical element located at 12'
  • Four 8' radial elements located at 12'
  • Antenna mast support via guy wires
Receive Antenna
  • 20' high
  • One 8' vertical element located at 12'
  • Four 8' radial elements located at 12'
  • Antenna mast support via guy wires
Weather-proof Enclosure
  • Typical footprint: 36" h x 24" w x 38" d
  • Requires ~1000 watts AC
  • Network connection desirable
Ideal Installation Conditions
  • Close to ocean (less than 500 feet from water's edge)
  • Wide field of view (180° up to 360°)
  • Area relatively clear of obstructions (power lines, antennas, large metal objects)
  • AC power available

 

Signal Specifications
  • Output Transmit Power: 80W peak, 40W average
  • Operating Frequency: 11.5-14 MHz
  • Modulation Format
    Pulsed Swept Frequency:CW
  • Pulse Repetition Frequency: 1-8 kHz
  • Duty Factor: 50%
  • Sweep Width: 50-150 kHz (typical)
  • Total Signal Bandwidth: 65-200 kHz (at -20 dB level)
  • Polarization: Vertical
  • Coverage Angle: 360°
long-range surface current mapping
Long-range Antenna Specifications
(quantity 2 antennas) Transmit Antenna
  • 44' high
  • Typically requires guy wire supports
Receive Antenna
  • 20' high
  • One 8' vertical element located at 12'
  • Four 8' radial elements located at 12'
  • Antenna mast support via guy wires
Weather-proof Enclosure
  • Typical footprint: 36" h x 24" w x 38" d
  • Requires ~1000 watts AC
  • Network connection desirable
Ideal Installation Conditions
  • Close to ocean (less than 800 feet from water's edge)
  • Wide field of view (180° up to 360°)
  • Area relatively clear of obstructions (power lines, antennas, large metal objects)
  • AC power available

 

Signal Specifications
  • Output Transmit Power: 80W peak, 40W average
  • Operating Frequency: 4.3-5.4 MHz
  • Modulation Format
    Pulsed Swept Frequency:CW
  • Pulse Repetition Frequency: 256-512 Hz
  • Duty Factor: 50%
  • Sweep Width: 12-25 kHz (typical)
  • Total Signal Bandwidth: 27-40 kHz (at -20 dB level)
  • Polarization: Vertical
  • Coverage Angle: 360°
high resolution surface current mapping
High Resolution Antenna Specifications
(quantity 1 antenna) Transmit/Receive antenna
  • One 8' vertical element located at 12'
  • Four 4' radial elements located at 12'
  • 12' high
  • Antenna mast support via guy wires
Weather-proof Enclosure
  • Typical footprint: 36" h x 24" w x 38" d
  • Requires ~1000 watts AC
  • Network connection desirable
Ideal Installation Conditions
  • Close to ocean (less than 500 feet from water's edge)
  • Wide field of view (180° up to 360°)
  • Area relatively clear of obstructions (power lines, antennas, large metal objects)
  • AC power available

 

Signal Specifications
  • Output Transmit Power: 80W peak, 40W average
  • Operating Frequency: 24-27 MHz
  • Modulation Format
    Pulsed Swept Frequency:CW
  • Pulse Repetition Frequency: 4-8 kHz
  • Duty Factor: 50%
  • Sweep Width: 150-500 kHz (typical)
  • Total Signal Bandwidth: 160-510 kHz (at -20 dB level)
  • Polarization: Vertical
  • Coverage Angle: 360°