FPV antennas

FPV antennas might seem like small components, but they have a huge impact on the quality, stability, and range of your FPV video system (both analog and digital HD). Choosing the right antennas – for both the drone (on the VTX) and the goggles (on the VRX) – is crucial for a comfortable and safe flight.

Basic concepts regarding FPV antennas (operating mainly in the 5.8GHz band):

• Circular Polarization: The standard in FPV, much better at reducing multipath interference (signal reflections) than linear polarization. It comes in two variants:
  • RHCP (Right-Hand Circular Polarization).
  • LHCP (Left-Hand Circular Polarization).
  The most important rule: The antenna on the transmitter (VTX) and the antennas on the receiver (goggles) must have the same polarization (all RHCP or all LHCP) to achieve optimal reception! Mixing polarizations drastically degrades the signal.
• Antenna Types:
  • Omnidirectional: Radiate and receive signals fairly evenly in all directions (in a donut shape). Ideal for the drone and as one of the antennas on the goggles. Examples: Pagoda, Cloverleaf, Dipole.
  • Directional: Focus energy into a narrower cone, offering significantly longer range and better signal penetration in that direction, at the cost of weaker reception from the sides and back. Ideal as a second antenna on goggles (in diversity systems) for longer-distance flights. Examples: Patch, Helical.
• Antenna Connectors: Must match the socket on your VTX and goggles. The most popular are: SMA, RP-SMA (Reverse Polarity SMA - note the difference!), MMCX, U.FL (IPEX).

When selecting antennas for your FPV setup, follow these guidelines:

• Choose Polarization and Stick to It: Decide on RHCP or LHCP and buy all antennas (for drones and goggles) with the same polarization. RHCP is historically slightly more popular, but both work equally well as long as they are consistent.
• Drone Antenna (VTX): Usually, the best choice is an omnidirectional antenna (e.g., Pagoda, Cloverleaf type) to ensure a good signal regardless of the drone's orientation in flight. Choose the appropriate connector (MMCX or U.FL are most common on modern VTXs) and cable length to allow safe mounting away from interfering elements (e.g., carbon frame, battery).
• Goggle Antennas (VRX):
  • If your goggles have a single receiver, use a good quality omnidirectional antenna.
  • If you have a "Diversity" receiver (two antenna inputs), the best practice is to use a combination: one omnidirectional antenna (for signal reception around you) and one directional antenna (e.g., Patch or smaller Helical) pointed in the direction you usually fly (to increase range and signal quality in that direction).
  • In "Quadversity" systems (four antennas), often two omnidirectional and two directional antennas are used.
  • Ensure the antenna connectors match your goggles (most often SMA or RP-SMA).
• Application: For freestyle/racing at short to medium distances, good omnidirectional antennas are sufficient. For Long Range flights, high-quality directional antennas on the goggles are essential.
• Build Quality: Good antennas are precisely tuned to the correct frequency and made from durable materials. It's worth investing in antennas from reputable brands, e.g., TrueRC, Lumenier, RushFPV (if you stock them).

Choosing the right FPV antennas is often underestimated but incredibly important for building a reliable video system. Wondering whether to choose RHCP or LHCP polarization? Which connector fits your VTX or goggles? Do you need a directional Patch antenna?

Selecting antennas can seem complicated, but we're here to help! Contact the Avifly team (details on the Contact Us page), and we'll advise you on the best antennas for your drone, goggles, and flying style.

We offer a wide selection of omnidirectional and directional antennas in both polarizations and with various connectors, available in stock with fast shipping from our warehouse in Poland.

Ensure crystal clear video and maximum range with FPV antennas from Avifly! 📶📡