One (of many) thing I have an MP question about is comms. I have a mic/speaker set up. How do I set up comms? Is there a button to push? I think you have to set up the VHF channel too?
You must set up the channels (VHF and UHF) you wish to use. Easiest to preset them in the data cartridge. Most pilots just use the presets. Then ensure that they are selected in the DED. Alternatively, you can manually set channels in the DED via the ICP. After the channel is set you just use the VHF or UHF talk switches.