5.8ghz Reciever heatsink

If you fly 5.8Ghz FPV then your probably using one of the RC305 Recievers which are great recievers for the money. In using them however you may notice it gets rather warm after a few minutes use, and even more so in sunlight.

This is due to the PCB having a 78H05 linear regulator on it which disipates the difference between a 3S lipo down to 5volts. I use the Reciever fequently and in summer found it got warmer then i would like, but in winter this is not a problem.

This mod will allow the regulator to disipate the heat through the metal case and thus keep it cool, and make it more reliable.

You will just need a thin piece of copper cut to size 10mm wide x 25mm long, a pair of long nosed pliers to bend it into shape.

Once bent to a 'L' shape, you should tin the short side of the copper so it is ready to solder onto the PCB, and also tin the PCB aswell.

Once soldered the copper can be bent over like shown, thus allowing it to touch the case, and be removed without snagging on the case.

Once it is done put it all back together and feel the differnece in how the heat is more overall rather than in a hot spot, this should make it more reliable too. The Reciver module actulally uses 3.3Volt, so if you use a 2S lipo it would be even better, as the regulator would not need to disipate so much voltage difference.