Companion bug in external radio module setup

[athertop]

This issue is just in Companion and not in the 2.1.7 OpenTx f/w for Taranis plus:

The max number of channels you can set is 15, not 16 strangely. Just a validation error it appears based on value of the start ch.

[Kilrah]

16 channels starting from CH17 would mean 17-33. We don't have a channel 33.

[MikeB]

If the channels are numbered 1 to 32, then the first 16 are 1-16 and the next 16 are 17-32.

Mike.

[Kilrah]

Woops correct, too tired - fixed :\