Like the idea of the SPH-10 for pit-to-pit comms. Eg. taking split times from pit roof then relaying this to guys on the pit wall to put on the pitboard.
It would be great if I could use my pair of SMH-10 units and connect them to a headset and mic combination similar to the SPH-10 but without the added expense of a whole separate system. Preferably the SMH-10 units would be belt mounted to keep the weight down on the headset - unless this affects the range.