I have a problem with my 2 XBee modules( XBee PRO ZB Series 2).
Most Time the transmission (transmitt and receive with a test application) takes ca. 60ms.
In this case the possible range is not verry far ( ca. 200m )
After a few reconnections (switch off and on one module) the transmission time is between 1 and 20 ms.
In this case the possible range is is much more. (not testet how far ..... >300m)
One module causes somtimes problems at connecting with X-CTU (I'm able to flash new firmware with the trick: Put the module in the USB-Xbee-Adapter while the X-CTU - "Unable to comunicate" Window is shown)
I have two USB-XBee-Adapter the "problem-module" has the problem on both USB-Adapters, the other module works fine with both USB-Adapters.
I've tryed to use new firmware (2xA7) ... nothing changed
Is is posible that the one module is broken? or could it be a configuration problem.
I've not much experience with xbee.