About the COM1 MIC button

   
         
   

VHF Comm - Icom A200 (Upper unit)

   
         
    Pressing the COM1 MIC button selects the Com 1 transmitter and receiver.    
   

No other selection is needed to use just Com1

   
         
    When COM1 MIC is selected, pressing COM2 simultaneously monitors Comms 1 & 2 but transmission is only on Com 1    
         
    The COM1 MIC indicator light blinks while the Com1 transmitter is keyed on    
    Include these indicators in your panel scan to detect inadvertent transmitter activation