Attribute: Communication channel
Attribute type: A
A channel number assigned to a specific radio frequency, frequencies or frequency band.
enter specific VHF-Channel
INT 1: IM 40;
Each VHF-channel should be indicated by 2 digits and up to 2 characters (A-Z);
e.g. VHF-channel 7 -> '07' VHF-channel 16 -> '16';
The indication of several VHF-channels is possible;
The attribute 'communication channel' encodes the various VHF-channels used for communication.