Today I opened my Syma X5C 2.4Ghz remote controller. The default range is only 30m and I want to extend this range by adding a 3db 2.4Ghz antenna.
I think it’s very easy to replace that fake plastic antenna with a 3db 2.4Ghz from an old wifi router, or you can order one on eBay for only $6.
I think this hack will increase the range of the Syma X5C up to 100 meters.
After I get my antenna and make the mods I will come back with a step-by-step article about this transmitter hack.