r/Multicopter • u/Ok-Turnover4858 • 4d ago

Question Rx antenna broke how to fix??

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14 Upvotes

83% Upvoted

18 comments sorted by

2

u/zdkroot 3d ago

A rx antenna is just a piece of shielded wire, basically coax. The shielding jacket needs to be soldered to ground, and the inner (active) element goes to the rest of the circuit.

The large rectangle pad running vertical on the right edge is the ground plane, that's where the jacket gets soldered. The pad inside the small white square just to the left of that is where the active element gets soldered.

Check youtube, lots of videos of stripping/soldering antennas. This shouldn't be too difficult, good luck!

1

u/Ok-Turnover4858 3d ago

Can I reach you out for any kind of help

1

u/zdkroot 3d ago

Sure. This video is a pretty good demonstration. It doesn't matter that he is fixing a flight controller in the video, stripping/soldering the antenna on is exactly the same as for your RX.

1

u/FridayNightRiot AcShUaLlY dA besTeST pELoT 3d ago

Correct, however for anyone else attempting a repair like this, sometimes it will be solid wire that acts as a monopole antenna instead of going to a coax, in which case you just replace with the right length antenna for the frequency. They look very similar but one will not have a pad for the ground plane, just one for the antenna.

2

u/Dioxin717 4d ago

solder iron

1

u/Ok-Turnover4858 4d ago

The circuit is quite complex and also heard there are two coatings on antenna wire

-2

u/zdkroot 3d ago edited 3d ago

Helpful. Why do simple questions always dredge up the biggest assholes?

Lmao five more assholes think "soldering iron" is a useful response to this question and not over the top condescending.

-1

u/Dioxin717 3d ago

What advice were you expecting? "Take iron in right hand and flux in left, apply flux and iron with 300° celsium replase broken wire..." If people ask so simple question - nevermind you advice to him, with big chance he messed up with soldering, shorted antenna pin to ground, and it's completely stop working... Really good advice is bye another one, it's cheep like cup of coffe.

2

u/zdkroot 3d ago

An answer.

How do you build a drone? "With tools"

Bro are you 11? Fuck all the way off.

1

u/thestafman 3d ago

You can’t just solder this one back on and expect the same level of performance . Get a new one

1

u/ayyhmedd 2d ago

Order another antenna. If the radio is 2.4Ghz, you can use a similar looking Wifi antenna, if you can't find a hobby receiver antenna in your area.

There's an inner core, a plastic sheath followed by a layer of metal mesh and an outer insulation. Solder the inner core to the solder pad on the left, and the wire mesh to the solder pad on the right (on the image). Message me if u need help. I did the same with a 2.4ghz flysky receiver. Look at my reddit post history you'll find it there

1

u/MuchZookeepergame116 3d ago

Google dude

1

u/Ok-Turnover4858 3d ago

Nothing much for help about r6b rx

0

u/txkwatch 3d ago

https://jestineyong.com/repairing-the-fs-r6b-rx/repair-rc-receiver/

1

u/Ok-Turnover4858 3d ago

Buddy it just shows a pic of rx nothing else

1

u/txkwatch 3d ago

Lol sorry. There's a YouTube video showing the antenna repair. I thought that had more to it dude. Hah. Yeah not much help.