What is the spare communication board used for?

Articles in this section

• Is there any difference between a 5MHz XM generator and a 20MHz XM generator?
• How much space should be in between each XM generator?
• What does ON/OFF on screen of generator mean?
• Can a single XM run multiple frequencies as a group all at once?
• What the single grey knob on XM is about or where it's supposed to be pointing?
• I have two XMs up and running with one program on each one. Can I turn off the side that doesn't have the remote?
• Is there a way to plug in pads while running remote without disturbing the Remote?
• How do I troubleshoot if the Channel lights don't go from red to blue when XM generator is running?
• How do I troubleshoot an unrecognized XM Generator?
• Is XM equal to GX with respect to using with Scalar or Plasma?