LRIT/HRIT System
L-Band Receivers
USB LRIT receiver specifications
RF input frequency | 135–144MHz (1688.5–1697.5MHz from a 1691MHz to 137.5MHz LNB) |
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Frequency resolution | 5kHz |
RF input connector | 50Ω BNC |
RF input level | –15dBm to –75dBm |
Symbol rates | 64ksps to 1024ksps |
Viterbi decoding | ½, K=7, G1=171, G2=133 |
Demodulator modes | QPSK, BPSK |
Data encodings | NRZ-S, NRZ-M, NRZ-L |
Digital interface | USB port |
Power requirements | 15V DC @ 2A |
LNB power | 14–15V DC nominal @ 0.75A via RF input |
PSU | External switch mode, input 100–240V AC 47–63Hz @ 1.2A |
Dimensions (W×H×D) | 175×60×240mm |
Weight | 1.7kg (including PSU) |
USB LRIT/HRIT receiver rack specifications
RF input frequency | 126–154MHz |
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RF input connector | 50Ω N-type |
IF conversion | Direct, 70MHz, 50MSPS, 10-bit |
Frequency resolution | 25kHz |
Symbol rates | 0.1Msps to 3.5Msps |
Viterbi decoding | ½, K=7, G1=171, G2=133, 5.2dB coding gain at 1:105 BER |
Demodulator modes | QPSK, BPSK, PSK |
Data encodings | NRZ, NRZ-S, NRZ-M, Biphase-L |
Performance | QPSK/BPSK within 1dB of theoretical, 0.5dB typical |
Digital interface | USB port |
Power requirements | 100–240V AC 50–400Hz |
USB LRIT receiver
- High-quality, low-cost receiver for direct broadcast LRIT transmissions from GEO-KOMPSAT-2A (GK-2A) and Electro.
- Also fully supports GOES HRIT transmissions.
- Housed in a sleek, compact, durable extruded aluminium case with styled ABS bezels.
- USB interface for fast, reliable data transfer to the host computer.
- Fully software controlled, with detailed status reports available.
- Built-in time-stamped fault logging.
- 20-LED real-time signal level display for easy dish alignment and operational signal monitoring.
- Status LEDs for LNB power, signal lock, USB ready, control communications, data buffer status and frame synchronisation detection.
- Adjustable RF attenuator to accommodate LNB signal inputs between –15dBm and –75dBm.
- Supports QPSK and BPSK demodulation.
- Built-in hardware Viterbi decoding.
- Supplies power to the LNB via the RF input.
- Powered by an external switch mode PSU (supplied).
- DC–DC converter PSU also available for battery or portable operation (input 10.6–15V DC).
USB LRIT/HRIT receiver rack
- High quality, high performance, professional grade receiver for direct broadcast HRIT transmissions from GOES, LRIT/HRIT from GEO-KOMPSAT-2A (GK-2A), and LRIT from Electro.
- Available in LRIT, HRIT or combined LRIT/HRIT configurations.
- Rugged 4U-high 19” rack.
- Plug-in modules for ease of maintenance and future upgrades.
- USB interface for fast, reliable data transfer to the host computer.
- Fully software controlled, with detailed status reports available.
- Comprehensive LED and character matrix status displays and diagnostic points on the front panel.
- Supplied with up to two state-of-the-art multi-mode DSP receiver modules and USB interface modules.
- Each receiver module supplies power to the LNB via its RF input.
- Supports QPSK, BPSK and PSK demodulation.
- Built-in hardware Viterbi decoding.
- Rack or desk mount versions available.
- Powered by 100–240V AC mains, 50–400Hz.
- Upgradable to also provide HRPT/AHRPT reception by purchasing additional plug-in modules together with a tracking antenna system and Dartcom Polar Orbiter Ingester software.
Ku/C-Band Service Availability
Overview | Features | Ku-Band Hardware | C-Band Hardware | L-Band Antennas | Ku/C-Band Service Availability | L-Band Service Availability