Projects
HFRNet
Radiated Signal Specifications
Mid-range Antenna Specifications
(quantity 2 antennas) Transmit Antenna
(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
- 20' high
- One 8' vertical element located at 12'
- Four 8' radial elements located at 12'
- Antenna mast support via guy wires
- Typical footprint: 36" h x 24" w x 38" d
- Requires ~1000 watts AC
- Network connection desirable
- 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 Antenna Specifications
(quantity 2 antennas) Transmit Antenna
(quantity 2 antennas) Transmit Antenna
- 44' high
- Typically requires guy wire supports
- 20' high
- One 8' vertical element located at 12'
- Four 8' radial elements located at 12'
- Antenna mast support via guy wires
- Typical footprint: 36" h x 24" w x 38" d
- Requires ~1000 watts AC
- Network connection desirable
- 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 Antenna Specifications
(quantity 1 antenna) Transmit/Receive antenna
(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
- Typical footprint: 36" h x 24" w x 38" d
- Requires ~1000 watts AC
- Network connection desirable
- 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°