Semi-Flexible RPSMA Extension Cable for FPV

Let’s be honest: your VRX is buried, and your omnidirectional antenna is practically pointing at your own skull. You need to reposition it without dropping your video feed to a cheap, wet-noodle wire. Enter the semi-flexible RPSMA extension cable. After 10 years of manufacturing and delivering commercial FPV systems right here in the UK, we know exactly how bad RF attenuation can ruin a weekend. This RG402 coaxial pigtail lets you perfectly angle your FPV goggle antennas for maximum signal penetration and minimal multipathing. It’s a 50 Ohm bridge between 'sudden failsafe' and 'crystal clear video,' built for pilots who actually want to fly behind trees without inhaling the magic smoke of a lost quad.

Key Highlights

• RG402 Semi-Flexible Coax: Bend it to the perfect angle and it actually stays there. No more floppy antennas ruining your reception.
• Gold-Plated Contacts: Because we like to pretend we’re fancy while soldering in our pajamas, and it genuinely helps signal integrity.
• Optimized Lengths: Available in 5cm or 10cm to keep your goggle setup tidy without unnecessary cable slack.

Why You Want It

It’s a cable. It carries RF signals from point A to point B. But the magic here is the 50-3 (RG402) specification, which is engineering talk for 'thick enough to prevent signal loss, but bendable enough to route perfectly.' Whether you’re trying to get your FatShark, HDZero, or Walksnail patch antennas pointing exactly at your flight path, this cable holds its shape. It ensures your VTX signal reaches your goggles exactly as intended, saving you from the ultimate humiliation of crashing into a stationary object.

Specifications

• Connector A: RPSMA-K (Female/Jack - Outside threads with a center pin).
• Connector B: RPSMA-J (Male/Plug - Inside threads with a center hole).
• Cable Type: 50-3 / RG402 Coaxial (Semi-flexible, low loss).
• Impedance: 50 Ohm.
• Length Options: 5cm or 10cm.
• Weight: Data unavailable (because the manufacturer apparently doesn't own a scale, but it's light enough for your neck).

RPSMA Extension Cable FAQ

Can I use this RP-SMA extension cable to position my FPV goggle antennas?

Yes, this semi-flexible RPSMA extension cable is designed specifically for FPV goggle and VRX setups. By utilizing rigid RG402 coaxial cable, it allows you to bend and hold your directional or omnidirectional antennas in the optimal position for the best signal reception. Just verify your receiver actually uses RP-SMA (look for a pin on the goggle connector) before purchasing.

What’s in the Box*

• 1× RPSMA-K to RPSMA-J 50-3 Coaxial Cable

Disclaimer

Buying the wrong polarity is a frustrating rite of passage in FPV. If you accidentally buy this for a standard SMA setup, it will not fit. Check your pins before you buy. If you get it wrong, just buy another one. We have rent to pay.

Still Here?

Congratulations, you’ve reached the bottom of a product page for a short coaxial cable. You’re clearly a spec-nerd who appreciates the finer things in life, like minimal dB loss and gold-plated threads. Stop overthinking the Betaflight tune for a minute, add this to your cart, and let’s get your antenna pointing in the right direction.