Reduce Broadcast Radius XBee S2C

XBee & XBee Gateway XBee - 802.15.4
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#1

Hi

I am using two XBee S2C(XB24C family) with ZIGBEE TH Reg function set, and Firmware version 405F.
I have set both of them in API2 and Router role(CE = 0).
I am using Frame type 0x17 along with 64-bit destination address and IS AT command to read ADC1 value off the other XBee successfully.
Now, Even though I have set the following parameters to their minimum values, I am still able to read ADC1 value off the other XBee over 15 meters:
NH = 1, BH = 1, PL = 0, PM = 0 for both XBees.
I know it is an unusual question, but how can I reduce the communication distance to the minimum through Radio Configuration? I don’t want to use any shielding technique, but just a solution by making changes to Radio Configuration.

Thanks

#2

You can change the PL command to 0 and disable boost.

To reduce hops, set the BH and NH to 1.

#3

That is exactly what I have done with both of S2C XBees, but damn they are strong! I can still send and receive messages over 40 meters indoor at lowest settings!
Thanks for your response

#4

Your only other option at this point is to use an external anntinuator or a -db gain antenna.