The relays are solid state.? It is a pi hat built specifically for the low power requirements of the pi.? They can also be stacked up to 4 hats with a total of 16 relays.? I have to believe it would work well for ptt being solid state.? Kenwood and others used standard contact type relays for ptt in their radios for years.? I have 2 TR7400A's that I still use daily and no issues with the relay in either one.? I'm looking for a way that the commands or some other coding could be used to control the relay from direwolf or some other program direwolf can control.? I can't imagine that pulling the very low voltage of a ptt radio circuit to ground, or maintaining and then breaking the circuit would present any significant electrical load to the relay.
