This guide will cover the removal of old antennas from Sennheiser G2 (and also some crossover with how the G3 system come apart)

I'll then describe how to prepare your parts for the addition if an SMA connector so you can use "whip" style antennae or wire in to a RF distribution system.

If you follow the first half of the guide it should be fairly obvious how to attach a Sennheiser part to the board should that be all you wish/need to do.

You will need at a minimum; a torx T6 driver bit and a soldering iron.

For the SMA mod you will need, in addition to the other bits, a pair of wire cutters and/or stripper, an SMA connector (RS part number: 512-0036), a file and a 1cm length of fairly thin wire.