LRIT/HRIT System L-Band Receivers

RF input frequency	135–144MHz (1688.5–1697.5MHz from a 1691MHz to 137.5MHz LNB)
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)

RF input frequency	126–154MHz
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

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).

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.

Dartcom