Bluesky123,

If you follow some of the thread between Myself and TND2000, you'll notice that the outcome was that we realised there were 2 different 6-channel
transmitters.

The 6 channel transmitters that come with the Walkera 22A and Walkera 35 are true 6 analog channel + extra digital channels.
The mixing is done in the receiver. Additionally, although the two turn knobs at the top are just mixed into the collective, they are also
transmitted as separate channels. The analogue channels are not affected by the CCPM dipswitch at all.

The CCPM Premixed 6 channels are a different transmitter altogether.

Dyonis-my,

The four-channel uses all the available inputs on the chip as either analog inputs or dipswitch inputs. You can't convert it easily into a 6 channel, and by the time you did, you could add as many channels as you wanted, because the workload would involve building a circuit anyway.

Regards
David