FV-800 / FV-810
Long-Range FPV Video & Data Link
The FV-800 is a COFDM Full-HD FPV video and C2 data link that reaches 300+ km line-of-sight with an 8 W power amplifier and tracking antenna, carrying up to 16 Mbps of video plus a dedicated full-duplex C2 telemetry channel at up to 230.4 kbps. Video bands span 2000–2500 MHz (FV-810: 2100–2700 MHz; custom 400 MHz–2.7 GHz), with AES-128/AES-256 encryption. Its broadcast capability makes it an ideal RVT source — unlimited receivers can watch the live feed simultaneously (e.g., ATAK terminals).
1/2
- 8 W PA + tracking antenna (LOS)
- 300+ km
- COFDM video channel, maximum
- 16 Mbps
- C2 duplex air rate, FEC off
- 230.4 kbps
- Max mesh nodes (swarm)
- 16
System features
- 01 Wide tunable range (400+ MHz) with professional-grade MER
- 02 Dynamic channel switching — remote on-the-fly retune to dodge jamming
- 03 Selectable bandwidth 2–8 MHz
- 04 Transparent UART / S.BUS / RS-232 / RS-485 / Ethernet
- 05 AES-128 and AES-256 anti-eavesdropping encryption
- 06 Standard RTSP / RTP unicast & multicast video
- 07 Mesh networking with up to 16 nodes for swarm applications
[ Link architecture ]
Video and control travel separately
On the FV-800 video and control do not share a radio. The COFDM video channel runs one way, down from the aircraft, at up to 16 Mbps; C2 telemetry runs full-duplex on a separate band at up to 230.4 kbps. The two are independent — and because the video channel is one-way, the ground station transmits nothing on it.
COFDM video One-way
2000–2500 MHz · ≤16 Mbps
C2 telemetry Full duplex
470–490 MHz · ≤230.4 kbps
Band allocation
[ Inside ]
Two radios in each enclosure
Each FV-800 unit pairs a COFDM video modem with a separate C2 telemetry radio behind one SoC. On the aircraft, video leaves through a band-pass filter and power amplifier, one way; the C2 radio has its own filter and runs both ways. Ethernet, serial and the flight controller all connect to the SoC, so either link can carry them.
FV-800 aloft unit
EthernetRJ-45
Flight controlUARTRS-232/485S.BUS
UARTdata mux
COFDM videoone-way≤16 Mbps
C2 return channeltwo-way≤230.4 kbps
EthernetRJ-45
UARTdata mux
Flight controlUARTRS-232/485S.BUS
FV-800 aloft unit
COFDM videoone-way≤16 Mbps
C2 return channeltwo-way≤230.4 kbps
- COFDM video, one-way
- C2, two-way
- Ethernet / serial
Redrawn from the FV-800 introduction deck block diagram.
Interfaces, aloft and ground
- SerialUART · RS-232 · RS-422 · RS-485
- RCS.BUS
- EthernetMAVLink · RTP H.264 / H.265 · RTSP
- ControlAT commands · UDP
What each unit contains
- AloftCOFDM transmitter HV-380 / HV-390 + C2 radio HRM-110
- GroundCOFDM receiver HV-130 + C2 radio HRM-110
FV-810-2127A1200B uses HRM-120 for its 1200–1300 MHz C2 channel.
HRM-110 C2 radio →[ Ground side ]
One stream over the air, any number of viewers
In RTP agent mode each FV-800 unit answers the streaming handshake locally — the camera talks to the aloft unit, the ground station to the ground unit — and only the RTP video crosses the radio link. The same ground unit relays the flight controller’s MAVLink onto Ethernet, where the ground control station and a HAT-110 tracking antenna both read it.
- RTP video
- C2 / MAVLink
- Ethernet / serial
Redrawn from the FV-800 manual (RTP agent) and introduction deck (MAVLink relay).
What RTP agent mode changes
- The RTSP/RTCP handshake never crosses the air — each end answers it locally.
- Only the RTP video stream goes over the COFDM link, one way.
- Video keeps flowing if the C2 channel is jammed.
- The ground station transmits nothing on the video channel.
- Any number of RTP receivers can join, such as ATAK terminals.
- Up to 3 RTP streams are relayed at once.
MAVLink relay
- Flight controller connects to UART1 on the aloft unit.
- The ground unit puts MAVLink on Ethernet.
- Ground control station and tracking antenna read the same stream.
[ C2 anti-jamming ]
Four ways to keep command and control
The video channel needs no return path; the C2 channel does, so that is where the FV-800 concentrates its defences against interference.
- 01
Background spectrum scan
The band is surveyed while the link runs, so a clear channel is known before it is needed.
- 02
Channel switching on the fly
The C2 frequency is changed remotely without taking the link down.
- 03
FHSS / DSSS
Frequency-hopping and direct-sequence spread spectrum on the C2 radio.
- 04
Link redundancy
A second link can be configured to take over when the first is lost.
From the FV-800 introduction deck.
[ Range ]
The antenna moves the number further than the power does
Eight times the power takes an omni from 20 km to 40 km. At the same 1 W, a tracking antenna takes it to 120 km. All three amplifier tiers share one scale so they can be read against each other — and the 300+ km figure needs the 8 W amplifier and the tracking antenna together.
1 W PA
- 5 dBi omni
- >20 km
- 8 dBi patch
- >30 km
- 21 dBi grid + tracking
- >120 km
2 W PA
- 5 dBi omni
- >25 km
- 8 dBi patch
- >40 km
- 21 dBi grid + tracking
- >160 km
8 W PA
- 5 dBi omni
- >40 km
- 8 dBi patch
- >70 km
- 21 dBi grid + tracking
- 300+ km
FV-800 / FV-810
Specifications
COFDM RF transmitter
- Frequency
- FV-800: 2000–2500 MHz · FV-810: 2100–2700 MHz · 1 kHz step
- Bandwidth
- 2 / 3 / 4 / 5 / 6 / 7 / 8 MHz
- FFT
- 2K / 4K / 8K
- Code rate / GI
- 1/2–7/8 · 1/4–1/32
- Customization
- 400 MHz – 2.7 GHz
C2 data link
- Frequency
- 470–490 / 500–520 / 1200–1300 MHz
- Bandwidth
- 150 kHz @115.2 kbps · 250 kHz @230.4 kbps
- Modulation
- 2/4 (G)FSK · OQPSK DSSS · (G)MSK · OOK
- Output power
- Up to 37 dBm (5 W)
System
- Interface
- RJ-45 · UART / RS-232 / RS-485 / S.BUS
- Power supply
- 9–30 V DC
- Weight
-
- Aloft · 1 W + 2 W 280 g
- Aloft · 2 W + 5 W 370 g
- Aloft · 8 W + 5 W 850 g
- Ground 240 g
- Fan / heatsink 63 g each
Excluding antenna and cable
- Dimensions (W × D × H)
-
- Aloft enclosure 160 × 110 × 35 mm
- Ground enclosure 145 × 90 × 35 mm
- Aloft PCBA 100 × 70 × 12 mm
- Ground PCBA 85 × 60 × 12 mm
- External 2 W PA 90.5 × 50 × 15 mm
- External 8 W PA 150 × 120 × 22 mm
- Fan 80 × 80 × 20 mm
- Heatsink 80 × 80 × 7 mm
Enclosure sizes exclude fan and heatsink
- Peak current @24 V
-
- 1 W + 2 W Aloft 600 mA · ground 325 mA
- 2 W + 5 W Aloft 1000 mA · ground 325 mA
8 W + 5 W model: to be announced
- Operating temp.
- −10 °C ~ 60 °C
Range (LOS)
- 1 W PA
- Omni >20 km · patch >30 km · tracking antenna >120 km
- 2 W PA
- Omni >25 km · patch >40 km · tracking antenna >160 km
- 8 W PA
- Omni >40 km · patch >70 km · tracking antenna 300+ km
Ordering
- FV-800-2025A470B
- 2000–2500 MHz · C2 470–490 · PA 1 W / 2 W
- FV-800-2025B470E
- 2000–2500 MHz · C2 470–490 · PA 2 W / 5 W
- FV-800-2225H470E
- 2250–2500 MHz · C2 470–490 · PA 8 W / 5 W
- FV-810-2127A470B
- 2100–2700 MHz · C2 470–490 · PA 1 W / 2 W
- FV-810-2127A1200B
- 2100–2700 MHz · C2 1200–1300 · PA 1 W / 2 W
※ PA codes: A=1W · B=2W · E=5W · H=8W. Higher-power amplifiers available for ultra-long-range applications.
https://hides.com.tw/en/products/fv-800/ · +886-2-2917-2417 · info@hides.com.tw