I bought n. XBP09-DPSIT-156
and n.2 XBee Explorer USB
and n. 900MHz Duck Antenna RP-SMA
Hooked to the PC and flashed with different firmware before this:
XBP09-DM DIGIMESH 90-232 ADAPTER v8162
Now they link but I’m not sure if I choose the right one.
They work fine when they’re near but they loose link sometimes at 50 and sometimes at 100 meters.