Currently, the callsign set on a radio channel, using either of these commands, applies only to messages sent in that channel via text chat. The indicator for players currently speaking in that channel over VON cannot be changed, and only shows the player name.

This means that channels can only be distinguished by their colour. This creates difficulties for colourblindness support, or just general customisation.

Requested solution: expand radioChannelCreate and radioChannelSetCallsign to allow controlling the VON indicator callsign as well.

I suggest making the callsign parameter accept an array as an alternative to its current string input. This could be in format ["callsign text", "callsign VON"], or in format ["callsign",bool] where the bool is true to apply to VON as well.

Alternatively, the bool or VON callsign could be added as a new optional parameter for radioChannelCreate. For radioChannelSetCallsign it would always have to be a new syntax, since it's not already an array.