Semi-Flexible SMA Extension Cable for FPV

Let’s be honest: your VTX is buried under a nest of TPU and zip ties, and your omnidirectional antenna is pointing straight at the dirt. You need to reposition it without losing your 5.8GHz video feed to a cheap, floppy wire. Enter the semi-flexible SMA extension cable. After 10 years of manufacturing and delivering commercial FPV systems in the UK, we know firsthand how RF attenuation can ruin a perfectly good bando bash. This RG402 coaxial pigtail lets you perfectly angle your FPV goggle antennas or VTX output for maximum signal penetration and minimal multipathing. It’s a 50 Ohm lifeline between 'failsafe into a tree' and 'locked-in video,' built for pilots who prefer flying over smelling the magic smoke of a cooked video transmitter.

Key Highlights

• RG402 Semi-Flexible Coax: Holds its shape so your antennas stay exactly where you bent them. No more floppy mounts.
• Gold-Plated Contacts: Because shiny things make us feel better about crashing, and it genuinely aids signal integrity.
• Optimized Lengths: Available in 5cm or 10cm options to keep your build clean and avoid unnecessary cable spaghetti.

Why You Want It

It’s a cable. It moves RF energy. The magic here is the 50-3 (RG402) spec, which is nerd-speak for 'thick enough to prevent signal loss, but bendable enough to route around your flight controller.' Whether you’re mounting a heavy patch antenna to your FatSharks or relocating the SMA pigtail on your favorite freestyle frame, this cable holds its ground. It ensures your signal survives the journey from the transmitter to the airwaves, saving you from the ultimate humiliation of losing video before you even hit the first gap.

Specifications

• Connector A: SMA Female (Outside threads, hollow center receptacle).
• Connector B: SMA Male (Inside threads, solid center pin).
• Cable Type: 50-3 / RG402 Coaxial (Semi-flexible, low loss).
• Impedance: 50 Ohm.
• Length Options: 5cm or 10cm.
• Weight: Data unavailable (the manufacturer still hasn't bought a scale, but it won't ruin your thrust-to-weight ratio).

SMA Extension Cable FAQ

Can I use this SMA extension cable for my FPV video transmitter?

Yes, this semi-flexible SMA extension cable is perfect for FPV video transmitters (VTX) and VRX setups. The rigid RG402 coaxial cable allows you to bend your antenna to the optimal angle and ensures it stays put during flight, providing excellent 5.8GHz signal transmission. Always verify your equipment uses standard SMA (look for a pin on the male connector) before purchasing.

What’s in the Box*

• 1× SMA Female to SMA Male 50-3 Coaxial Cable

Disclaimer

Buying the wrong polarity is an FPV rite of passage. If you buy this for an RP-SMA component, it will not fit, and you will feel silly. Check your pins, people. If you mess up, just buy the right one. Our server hosting isn't free.

Still Here?

Congratulations, you’ve reached the bottom of a web page dedicated to a piece of wire. You’re clearly an RF nerd who appreciates the finer points of 50-ohm impedance and minimizing dB loss. Stop over-analyzing your PID tune, add this SMA extension to your basket, and let’s get your antennas mounted properly.