The new DDLmesh series wireless digital data link is a low-cost long-distance video&data transmission product with small size, light weight, 2×2 MIMO, complete functions and abundant frequency bands. DDLmesh series based on SDR software defined radio platform with 2×2 MIMO, it adopts Beamforming, Maximal Ratio Combining(MRC), Maximal Likelihood(ML) algorithm, low density parity check(LDPC) coding, intelligent frequency selection and autonomous frequency hopping technology to achieve strong radio frequency performance and strong anti-jamming.
DDLmesh series data link radio provides ultra-long distance, low latency, bidirectional multi-channel network video&data&voice integrated wireless transmission. The world's leading code-modulated physical layer waveform technology and flexible anti-jamming and secure encryption design for the unmanned field are applied to reliable remote data links for UAVs, helicopters, robots, unmanned ships, unmanned vehicles and special vehicles.
The application system is mainly composed of the airborne radio with the airborne camera, and the ground radio with the ground computer, as well as the necessary accessories(including power supply, antenna feed system, connection lines and connectors, etc.).
The system can simultaneously transmit three IP/HDMI/SDI/CVBS HD video and multiple two-way transparent data(such as flight control/pod, BD/GPS, voice, etc.). AES encryption ensures transmission security.
Radio the transmission power of the station can reach up to 40W, providing a stable and reliable communication link.
- 400M/600M/800M/900M/1.4G/2.3G/2.4G/5.8GHz, transmitting power can be change, support NLOS high speed mobile transmission, open transmission distance of more than 50 km.
- 70Mbps data stream, adaptive dynamic bit allocation technique. Support one-way 4K, multi way 1080P or 720P HD video.
- 3 serial port and 2 video interfaces running at the same time, flight controller, voice, BD/GPS and other data can transmit with video.
- Support P2P, P2MP, MP2MP technique, centerless of no-master/slave. Support VLAN.
- Local diagnostic interface, telnet, network management. Local and remote wireless firmware update through FTP.
Vehicle Radio Specifications
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General |
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SDR Platform, Waveform |
9363 or 9361+7Z020, Mobile Network MANET |
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MIMO Technology |
Space-time coding、Receive Diversity、TX /RX beamforming、Spatial multiplexing |
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Receive Sensitivity |
-103dBm@5MHz BW, -117dBm@250KHz |
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Channel Bandwidth |
1.25/2.5/5/10/20MHz Broadband, 250k/500k/1MHz Narrowband Setting |
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Data Rate |
1-70Mbps(20MHz BW) Broadband, 50-1000kbps narrowband Adaptive, QoS |
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Modulation Mode |
TD-COFDM, BPSK/QPSK/16QAM/64QAM Adaptive(Fixed setting optional) |
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RF Output Power (Support TPC, transmission power control, 1dBm adjustable) |
10Watts×2/20Watts×2 40Watts×2/50Watts×2 150Watts×2/250Watts×2 (Customization) |
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Mode |
Decentralized P2P, P2MP and MP2MP communications with cross-connection, supporting small-scale (within 8 nodes) MESH networking with dynamic routing and multi-hop relay |
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Single Hop Delay |
Average 6ms (Unidirectional, 20MHz BW) |
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Encryption |
DES, AES128/256 (SM4/SNOW3G/ZUC optional, Chip/TF card encryption customized or external encryption machine) |
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Anti-Jamming Mode |
Manual spectrum scanning channel selection, Full band enhanced intelligent frequency selecting(spectrum awareness)/Full band adaptive frequency hopping/Roaming mode optional |
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Local/Remote Management |
Operating frequency, channel bandwidth, network ID, transmit power and other parameter settings, spectrum scanning, real-time display and statistical records of network topology, link field strength signal-to-noise ratio, upload and download traffic, node distance, BD/GPS(GNSS) positioning electronic map, temperature/voltage/jamming Monitoring, software upgrade (remote silence and wake-up optional) |
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Others |
The boot time is less than 28 seconds, and the network access/update/switching time is less than 1 second; The network size is less than 8 nodes, and the total bandwidth loss over three hops is less than 70%; Automatic carrier tracking, adapting to Doppler frequency shift of ±6kHz frequency deviation, supporting mobile communications at speeds above 7200 kilometers per hour (Mach 6, 2000 meters per second) |
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Bands(70M-6GHz customizable. Same frequency or different frequency of 2T2R at single band, or 1T2R at dual-band selectable/smart change) |
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BAND |
Frequency range |
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VHF/UHF (MHz) |
360-450/450-550/570-700/800-950, 225-400/225-678/320-470* |
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L Band (GHz) |
1.0-1.2/1.1-1.3/1.3-1.5/1.5-1.7/1.6-1.8, 1.0-1.5/1.1-1.6/1.2-1.7/1.3-1.8/1.6-2.3/1.7-2.4/1.8-2.5* |
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S Band (GHz) |
2.0-2.2/2.2-2.4/2.3-2.5/2.5-2.7/2.7-2.9/3.2-3.4/3.4-3.6/3.6-3.8, 1.9-2.7/2.0-2.7/2.1-2.7/2.7-3.6* |
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C Band (GHz) |
4.4-5.0/5.25-5.85, 4.2-5.2/5.5-6.0/6.4-7.2* |
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(Note: RF power, Dimensions, Weight is different) |
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MIIT (MHz) |
336-344/512-592/566-626/606-678/1420-1520/1430-1444 |
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Environmental |
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Operation Temperature |
-40℃ ~+80℃ |
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Protection Level |
IP66 (IP67/IP68 Customized) |
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Mechanical |
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Size/Weight |
19.1x18.6x6.3cm/2.16kg, 10Watts×2/20Watts×2 25.8x21.3x6.5cm/3.95kg, 50Watts×2 19.0x23.0x6.5cm/3.0kg, Dual-band Operation Simultaneously 22.1x21.1x6.3cm/2.16kg, Four-band Selection Operate 48.2x42.0x4.5cm/3.9kg, 19'' 1U Standard Rack Radio 48.2x42.0x8.8cm/5.9kg, 19'' 2U Display Screen Standard Rack Radio |
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Color |
Black (Iron Gray, Army Green optional) |
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Installation |
4 Mounting Holes, Ears |
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Power |
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Supply Voltage |
18-32V DC, 10Watts×2/20Watts×2 28-32V DC, 40Watts×2/50Watts×2 |
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Power consumption |
Operation 3-6A/Standby 0.7-0.9A@24V, 10Watts×2 Operation 6-7A/Standby 0.7-0.9A@24V, 20Watts×2 Operation 22A/Standby 0.4-1.6A@28-32V, 40Watts×2 Operation 30A/Standby 0.5-1.7A@28-32V, 50Watts×2 |
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Power Selection |
Power Supply by Main Cable |
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Interface |
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Basic interface |
2xTNC/2xN RF, 1-2xRJ45 Ethernet 100/1000BaseT, RS232, Wi-Fi AP, DC input. BD/GPS (GNSS), TTL (UART)/SBUS/Bluetooth 1.2-230.4Kbps available. Supports transparent transmission over Ethernet and serial ports, and all communication protocols, including MAVLink. Selectable service priority |
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Push to talk/Auxiliary interface |
MIC, SPK, PTT, GND/1xRS232, TTL, SBUS |
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Network Extension Optional |
Public Network Routing/4G LTE, WB-NB integration, Fiber, Satellite |
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Video Extension Optional |
Low Delay HDMI/SDI/CVBS, 4K/2K/1080P/720P/D1 |
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Link Status Indicator |
Steady red - The network is not connected Blinking red - Starting/not connected to the network Steady green - The network is connected |
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RSSI Link Indicator |
Steady green - The link quality is excellent Steady blue - The link quality is good Steady yellow - The link quality is medium Steady purple - The link quality is slightly worse Steady red - The link quality is poor or link is down Off - The link is interrupted |
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Management Interface/Control Interface |
Web-based network management/GUI, API for secondary development interface/SNMP |
