Sending D-Star DV slow/fast data using CI-V

# Set transceiver to DV mode
# Set auto RX
20 01 00 01
# Send frame
1F 02 (data)
# DV RX CS
20 00 02

# DV RX Message
20 01 02 (data)

# DV RX status
20 02 02 (data)