Is this modification possible?
Hi,
To know if your transmitter is eventually a 6 channel-radio, you can check that with a downloadable oscilloscope like the one I use to check the PPM-signal on transmitters. See chapter 1 of my website (address hereunder) for more details on where to download and how to use the scope. If you found the PPM-signal and it's showing 6 peaks in an interval of about 23ms, then you can have some hope to extend your transmitter. If only 5 peaks are detected in your PPM-signal, don't bother to try anything.
Succes,
Oliver