A packet that was received by the radio.
receivedNumber - The number that was sent in this packet or 0 if this packet did not contain a number. See send number and send valuereceivedString - The string that was sent in this packet or the empty string if this packet did not contain a string. See send string and send valuetime - The system time of the Calliope mini that sent this packet at the time the packet was sent.serial - The serial number of the Calliope mini that sent this packet or 0 if the Calliope mini did not include its serial number.signal - How strong the radio signal is from 255 (weak) to 0 (strong).radio