[ns] How to determine txpower from Pt_

[manish chaturvedi]

Hi,

I am trying to incorporate energy model in my NS2.33 simulation.  I have
some confusion between Pt_(used to set transmission range), and
txpower(energy model parameter specifying enegy consumption in
transmission). I need to know what is the relation between these values, and
how can I calculate one(txpower) given the other(Pt_). I looked at some old
discussions on this mailing list but could not make it from there. Please
give information or point to some source of this information.

Thanking you,Manish.