I am new to using the Xbee modules. I picked up two to test. At 9600 baud, one keeps sending garbage, which on the receiving radio (in hyperterminal) shows up as a continuous stream of what appears to be double Unicode characters. Is this likely a hardware issue with the module or can I “reflash” the radios?
Are these new units, or could they have settings left there by a previous user?
For instance, a previous user could have set one to transmit digital/analog samples at regular intervals. That could be the source of the “garbage” you’re seeing.
You could try using X-CTU to reset the modems to their default settings with the RE command (followed by WR to save the settings to flash). Then see whether the garbage persists (it shouldn’t).