Thanks guys; that worked! And if anyone else is interested, the radio automatically re-enables when you send a message.
@gohan - I monitor several temperatures, water levels, and flow rates associated with a duck pond and filtration system. Things can get out of whack fairly quickly due to pump inlet blockages, full filters, equipment failures, and weather induced surprises. Need quick updates so if there's a problem, I can intervene before a pump runs dry or I lose too much water.