The next thing I did today was install my push to talk (PTT) button.
This involved removing the control stick and drilling a hole in the base of it. I inserted a coiled cable similar to a telephone hand set cable but with a 2.5mm stereo connector into the hole with a rubber grommet. I soldered a momentary switch to the wires and installed it in to the cap that goes on the control stick.
Unfortunately, the coiled wire had very fine conductors which break very easily. In fact one of the wires broke during the process of installing the cap. During normal use, the wire shouldn't see much vibration relative to the stick and button so it shouldn't be a problem.
While testing, I went ahead and mounted my radio to the instrument panel with velcro. The adhesive on the velcro is not recommended for fabric but a test I had done showed it adheres well unless you pull it from an edge. I deliberately sized the velcro piece on the fabric to be larger than the portion on the radio. This should keep the velcro from being pulled from an edge.
