3.  Connect the  USB  port on your RF407-series radio to your computer.
4.  Using Device Configuration Utility, select the Communication Port used for your radio and 
connect to the RF407-series radio.
5.  On the Main tab, set the Active Interface to USB  or RS-232 (depending on how your 
computer will be connected to the RF407-series radio).
6.  Apply to save your changes.
7.  The TX/PWR and RX LEDs flash once, after which the TX/PWR LED returns to blinking at the 
Power Mode interval (0.5 sec, by default).
13. Radio communications option61