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In this video I show you how to directly solder a 5.8 Ghz FPV antenna directly to the video transmitter (VTX). We'll be using an Immersion RC Spironet and a Lumenier TX5G6 as an example. However, this can be done with a whole array of different FPV antennas and VTXs...
There are two main reasons why you might want to do this.
1. Your build is so tight and small that there is no room for a VTX and antenna if you include the SMA connectors. A side effect of doing this will also reduce about 10 grams of weight. Something that's also good for small builds.
2. You broke your SMA connector in a crash and still want to be able to use the VTX. Hopefully, you didn't pull the traces along with the ripped SMA connector. If you still have traces you can solder to, you're good.
Another reason to do this might be if you have an SMA VTX but an RP-SMA antenna and don't want to use an adapter. You can just remove the connectors altogether.
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