ETL-210A
COFDM Ethernet-over-Air Adapter
The ETL-210A is a bidirectional COFDM Ethernet-over-Air transceiver for long-range UAV and USV links, field-verified at distances beyond 500 km with up to 26.8 Mbps in each direction (64QAM) over independent uplink and downlink channels. The base unit tunes from 100 to 2500 MHz in 1 kHz steps, with custom bands available from 100 MHz to 5.8 GHz, and secures traffic with AES-128/AES-256 encryption. Its COFDM ASIC, firmware and boards are designed and manufactured in Taiwan.
1/2
- Field-verified range
- 500+ km
- Full-duplex data rate (64QAM)
- 26.8 Mbps ×2
- High-speed mobile reception
- 1,000+ km/h
- Startup time
- 5 s
System features
- 01 With a high-power amplifier, achieves 300+ km full-duplex range
- 02 Supports high-speed reception at over 1,000 km/h
- 03 Independent uplink/downlink channels (FDD) — stealthy, strongly jam-resistant
- 04 Transparent bidirectional Ethernet plus RS-232/RS-485/S.BUS/UART
- 05 Military-grade AES-128 / AES-256 encryption
- 06 Full-duplex and broadcast dual mode — in broadcast mode, unlimited simultaneous RVT (Remote Video Terminal) receivers
- 07 Active tracking-antenna integration with dynamic auto north-finding
- 08 Flexible custom bands from 100 MHz to 5.8 GHz
[ Architecture ]
A transmitter and a receiver behind one antenna
Inside the ETL-210A, an Ethernet bridge feeds a COFDM transmitter and a separate COFDM receiver, so the uplink and downlink run at the same time, each on its own channel. A diplexer lets both share a single antenna. The power amplifier and diplexer sit outside the base module — which is why the ETL-210A-B ships without them, and the ETL-210A-PATV and ETL-210A-PA2.4G build in an amplifier for their band. Serial devices connect through the on-board SoC.
ETL-210ABase module
Ethernet ×2
UARTRS-232RS-485
RF front end — outside the base module
ETL-210ABase module
Ethernet ×2
UARTRS-232RS-485
RF front end — outside the base module
- Transmit
- Receive
- Ethernet / serial
Throughput · each direction
- 64QAM
- 26.8 Mbps
- 16QAM
- 17.8 Mbps
- QPSK
- 8.9 Mbps
[ Range ]
300+ km takes the tracking antenna
With the 8 W amplifier, the antenna at the ground end sets the range: 20–30+ km on a standard omni, 60–90+ km on a patch, 200–300+ km on an auto-tracking antenna. The solid bar is the lower figure the datasheet gives; the hatched part runs to the upper one.
8 W PA
- Standard omni-dipole
- 20–30+ km
- Patch antenna
- 60–90+ km
- Auto-tracking antenna
- 200–300+ km
[ Applications ]
Ethernet, carried across the gap
The ETL-210A is transparent Ethernet: cameras, sensors, PCs and flight systems at either end see an ordinary network, with data bandwidths from 1 to 26.8 Mbps. Uplink and downlink use independent channels, and any number of receive-only stations can take the downlink at the same time.
- Aloft
- ETL-210A
- Ground station
- HAT-110 + ETL-210A
- Receive-only stations
- Share the downlink — no limit on number
- Command centre
- Ethernet — any IP device
- Aloft
- ETL-210A
- Ground station
- HAT-110 + ETL-210A
- → Command centre · Ethernet — any IP device
- Receive-only stations
- Share the downlink — no limit on number
- Downlink · video + data
- Uplink · C2
- Receive-only stations
- Independent channels · up to 300+ km
Where it is used
- Aircraft
- Ships
- High-speed trains
- Subways
- Remote islands
- Mountainous regions
- Emergency evacuation and rescue networks
Application scenarios from the ETL-210A datasheet. Diagram redrawn from its UAV link figure.
ETL-210A
Specifications
RF parameters
- RF frequency (base)
- 100–2500 MHz · 1 kHz step
- Bandwidth
- 1 / 2 / 2.5 / 3 / 4 / 5 / 6 / 7 / 8 MHz
- Modulation
- COFDM · FFT 2K/4K/8K
- Constellation
- QPSK / 16QAM / 64QAM
- Code rate
- 1/2 · 2/3 · 3/4 · 5/6 · 7/8
- Guard interval
- 1/4 · 1/8 · 1/16 · 1/32
- Digital attenuator
- 0 to −47 dB · 1 dB step
Receiver performance
- Max input
- > +5 dBm
- Sensitivity
-
- 1 MHz < −99 dBm
- 1.5 MHz < −98 dBm
- 2 MHz < −96 dBm
- 2.5 MHz < −95 dBm
- 3 MHz < −95 dBm
- 4 MHz < −94 dBm
- 5 MHz < −92 dBm
- 6 MHz < −91 dBm
- 7 MHz < −90 dBm
- 8 MHz < −90 dBm
Measured at 2K · 16QAM · CR 2/3 · GI 1/8, single antenna
Transmitter performance
- RF output level
-
- 100–470 MHz 5 dBm
- 470–950 MHz 5 dBm
- 950–1900 MHz 0 dBm
- 1900–2500 MHz −5 dBm
ETL-210A-B base module, without PA
- MER
-
- V-band > 39 dB
- 470–950 MHz > 39 dB
- 950–1900 MHz > 36 dB
- 1900–2500 MHz > 34 dB
Typical, at −5 dB digital attenuation
- Spectrum shoulder
- > 48 dB
- Phase noise
- < −114 dBc @100 kHz
- Carrier suppression
- > 42 dB
System
- Data rate
- 528 kbps – 26.8 Mbps
- Throughput by constellation
-
- 64QAM 26.8 Mbps
- 16QAM 17.8 Mbps
- QPSK 8.9 Mbps
Each direction
- Connectors
- SMA 50 Ω ×1 · RJ-45 ×2 · UART/RS-232 ×2
- Encryption
- AES-128 / AES-256
- Power
- DC 12–30 V · 550 mA–3 A (by PA)
- Operating temp.
- −40 °C ~ 70 °C
- Dimensions / weight
- 200 × 135 × 70 mm · 1160 g (w/ 10 W PA)
- Compliance
- IEEE 802.3af/at · RoHS
Range with 8 W PA (LOS)
- Standard omni-dipole
- 20–30+ km
- Patch antenna
- 60–90+ km
- Auto-tracking antenna
- 200–300+ km
Ordering
- ETL-210A-B
- Base module (w/o PA/filter)
- ETL-210A-PATV
- Optimized 400–800 MHz · built-in 200 mW PA
- ETL-210A-PA2.4G
- Optimized 2.2–2.4 GHz · built-in 8 W PA (39 dBm)
※ Band support: 315/433/866/900 MHz and 1.2/2.4/3/4/5.8 GHz; custom uplink/downlink channels on request. Higher-power amplifiers available for 300+ km applications.
https://hides.com.tw/en/products/etl-210a/ · +886-2-2917-2417 · info@hides.com.tw