The second recording is made with the 2 modules in a master/slave pooling protocol. Both modules are on channel 22, the base station power is set on 16 dBm (still at 1.5 meter of the wi-spy) and the slave device is also set on 16 dBm power level but it is 5 meters away. We can clearly see the 2 spectra interlaced on channel 22.

From Eric Zunino