REG: RMS delay spread

Hi all,

I'm measuring the frequency response and calculating the power delay profile. In between the transmitter and receiver, i kept the box with water(level-24cm). I'm measuring in indoor environment and also in Anechoic chamber. I calculated the rms delay spread for both cases. Indoor environment has 22ns rms delay spread and in chamber i got around 48 ns. So my question is that, does this means water absorbs more RF signals? Please provide some suggestions.

Regards,
David.

water box placed in both the cases i.e. room and chamber?
yes water and oxygen absorbs certain frequency ranges.