Remote K2 Power Timeout

Finally completed the power watchdog timer for the K2. This allows me to operate the K2 remotely within compliance of the requirement to have an automated means of shutting down a transmitter if it exceeds 3 minutes on the air. This is an FCC requirement, and you definitely need to be concerned about the possibility of losing rig control during a transmission.

My approach is the use an Arduino board to monitor the PTT line from the K2. If that is active longer than the predetermined timeout period (FCC mandates not more than 3 minutes), it disconnects power to the rig.  I have the power disconnected for a minute, then restored. The K2 will not power-up in a transmit state, so the problem should be resolved.