Bestes Drohnen-Funksender- und -empfängermodul für Videodatentelemetrie

Das Vcan2122 ist ein kompakter, medium-power bidirectional wireless data transmission module designed for reliable long-range communication in complex and interference-prone environments. Bezogen auf OFDM TDD wireless communication technology, it delivers strong anti-interference capability, excellent penetration performance, and highly stable data transmission.

Das Modul unterstützt multiple transmission modes, einschließlich Punkt-zu-Punkt, point-to-multipoint, und trunk communication, and enables star network topologies mit bis zu 16 Knoten in a single network. Thanks to its miniaturized design, geringer Stromverbrauch, und multiple data interfaces, Vcan2122 is well suited for Mobile, in der Luft, and embedded applications where reliability and flexibility are critical.

Das Vcan2122 Ist by default available in a wideband configuration, operating over a frequency range of 1420–1530 MHz. Within this single continuous band, the module provides up to 110 MHz of selectable frequency range, ermöglichen Automatisches Frequenzspringen with significantly greater flexibility to avoid interference and maintain stable links in complex RF environments.

In addition to the wideband version, optional single-band variants are also available in the following frequency ranges: 806–825.9 MHz, 1427.9–1467,9 MHz, 2401.5–2481.4 MHz. Each optional variant supports single-band operation only.

Under good line-of-sight (LOS) air-to-ground conditions, the transmission distance can reach 10-20 km oder mehr, depending on high gain antenna configuration and external power amplifier support.

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Merkmale

• Star Networking Capability
  Supports point-to-multipoint communication with up to 16 Knoten.

• High Bandwidth Transmission
  Maximum data rate up to 30 Mbit/s @ 20 MHz.

• Flexible Channel Bandwidth
  Unterstützt 3 / 5 / 10 / 20 MHz bandwidth modes.

• Automatische Frequenzauswahl
  Automatically detects interference and selects the optimal frequency point in real time.

• Koexistenz mehrerer Systeme
  Multiple Vcan2122 systems can operate simultaneously on fixed frequencies.

• Mehrere Datenschnittstellen
  Integriert Dual 100 Mbps Ethernet ports und TTL / RS232 / SBUS serial interfaces.

• Geringe Wartezeit
  End-to-end transmission delay ≤ 20 Frau.

• Sichere Kommunikation
  Unterstützt AES-128-Verschlüsselung.

• Kompakt & Leichtes Design
  Nur 35 G, suitable for UAVs and other weight-sensitive platforms.

• Web UI page to configuration the parameter.
  Provide a user-friendly web UI for configuring module parameters. Users can easily manage settings and modify parameters visually through the web page, without the need for complex AT commands or command-line instructions.

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Technische Daten

System Parameters

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Kanalbandbreite & Empfindlichkeit

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Schnittstellen

• Stromschnittstelle: XT30, DC 9–15 V

• Antennenschnittstelle: IPEX ×2

  • MAIN: Must be connected

  • AUX: Receive diversity only

• Datenschnittstellen:

  • Ethernet: 100 Mbps ×2

  • Seriell: TTL ×2, RS232 ×1, SBUS ×1

Schnittstellendefinition

Lineare Ordnung	Pin-Name	Schnittstellendefinition	Schnittstellenbeschreibung	Signalrichtung
1	TXP1+	Ethernet 1	TX+	O
	TXM1-		TX-	O
	RXP1+		RX+	ICH
	RXM1-		RX-	ICH
2	TXP2+	Ethernet 2	TX+	O
	TXM2-		TX-	O
	RXP2+		RX+	ICH
	RXM2-		RX-	ICH
3	TX1	Serieller Anschluss 1 TTL	TX	O
	RX1		RX	ICH
	GND		Boden	O
4	TX2	Serieller Anschluss 2 TTL	TX	O
	RX2		RX	ICH
	GND		Boden	O
5	TX3	Serieller Anschluss 3 RS232	TX	O
	RX3		RX	ICH
	GND		Boden	O
6	TX4	Serieller Anschluss 4 SBUS	SBUS-OUT	O
	RX4		SBUS-IN	ICH
	GND		Boden	O
7	PWR	DC 9~15V	Macht positiv	ICH
	GND		Macht negativ	ICH

Wir können auch einen TTL-Port auf RS422 umwandeln, und zusätzlich, Wir können eine RS232-zu-RS485-Konverterplatine hinzufügen, um RS485 zu unterstützen, Dies wird häufig zur PTZ-Steuerung von Kameras verwendet.

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Statusanzeigen

Modultyp	Modus	light status
		PWR	MODE	LAN1 LAN2	RSSI 123
Master	unsynchronisiert	Powered on	red light Powered on	Daten werden übertragen und blinken	Searching
Master	synchronisiert	Powered on	green light Powered on	Daten werden übertragen und blinken	Proportional zur Stärke des empfangenen Signals
Sklave	unsynchronisiert	Powered on	red light Powered on	Daten werden übertragen und blinken	Searching
Sklave	synchronisiert	Powered on	green light Powered on	Daten werden übertragen und blinken	Proportional zur Stärke des empfangenen Signals

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When the primary (Master, Bodeneinheit, Empfänger) and secondary devices (Salve, Lufteinheit, Sender) Sind not synchronized, Die PWR (Leistung) indicators on both devices remain steadily lit. Das MODE indicator Ist Rot on the primary device and Grün on the secondary device. Zu diesem Zeitpunkt, Die RSSI lights on both devices are in a searching state.

Once the master and slave devices are synchronisiert, Die RSSI lights display the received signal strength for each device. When data is being sent or received over the network, Die LAN1 indicators on both devices light up, während die LAN2 indicators blink to indicate network activity.

Anwendungen

Das Vcan2122 is suitable for a wide range of professional wireless data transmission applications, einschließlich:

• UAV / Drone Data Links

• Brandbekämpfung & Emergency Communication

• Öffentliche Sicherheit & Strafverfolgung

• Inspektion & Monitoring Systems

• Robotik & beim UGV

• Temporary Wireless Networks

• Industrial and Environmental Monitoring

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FAQ

Q: What are the main and secondary antennas used for in a 1T2R UAV video data module?
EIN: This module adopts a 1T2R (1 Übertragen, 2 Erhalten) architecture.

• Hauptantenne (Primary RF path):
  Responsible for both Übertragung (TX) und Rezeption (RX).
  It is connected through a T/R (Senden/Empfangen) switch, which routes the RF path either to the power amplifier during transmission or to the receiver chain during reception.
• Secondary antenna (Diversity receive path):
  Used only for reception (RX only).
  It improves link reliability by providing räumliche Vielfalt, helping mitigate:
  • Multipath fading
  • Signal blockage (e.g., drone body shadowing)
  • Orientation-dependent signal loss

Gesamt, the dual-receive design significantly improves link stability and robustness in mobile UAV scenarios.

Q: Can I modify the RF front-end by adding an up/down converter, PA, and LNA, and convert the system into a 1T1R architecture?
EIN: Theoretisch, adding an external frequency conversion stage (up/down conversion) plus PA (Leistungsverstärker) und LNA (Low Noise Amplifier) can be implemented as part of a custom RF front-end. aber, converting a 1T2R system into 1T1R is generally not recommended for UAV video links. Key impacts of switching to 1T1R:

• Reduced receiver sensitivity: Typically degraded by ~3–5 dB, due to the loss of spatial diversity gain.

• Lower link robustness in motion: UAV environments involve: Rapid movement / Orientation changes / Multipath fading, A single receive chain (1T1R) is more vulnerable to intermittent signal drops.

• Weaker anti-interference and fading resistance: Without dual receive antennas, the system loses diversity combining benefits.

Q: What is the maximum OFDM Peak-to-Average Power Ratio (PAPR) of this wireless video/data telemetry module?
EIN: The maximum OFDM PAPR of this module is typically: 11.5 dB. When designing an external RF front-end (such as PA, LNA, or frequency converter), sufficient PA back-off and linearity margin should be reserved to avoid signal distortion and spectrum degradation.

Q: Does Vcan2122 support video transmission?
Vcan2122 is a wireless data transmission module. Video transmission depends on external IP cameras or video encoders connected via Ethernet.

Q: Can this module support IP MESH MANET functionality?
Nein, default module is star networking type. Wenn Sie brauchen, we also can do IP MESH MANET (Mobiles Ad-hoc-Netzwerk) fucntion (use CX6702, CX6702 module). Momentan, we provide it as a finished product rather than as a standalone development module. Please refer to the product image below for your reference. (CX6779-L4H2)

Q: Can multiple Vcan2122 systems operate in the same area?
Ja. Fixed-frequency operation allows multiple systems to coexist with minimal interference.

Q: Does one unit support multiple frequency bands?
Nein. Each Vcan2122 unit supports one single frequency band only.

Q: Is diversity reception supported?
Ja. The AUX antenna provides receive diversity to improve link reliability.

Q: What is the typical latency?
The typical end-to-end transmission delay is ≤20 ms.