Dear All,

I want to ask about the receving RxThreshold. I compute it for two  
distances, one with 300m and the other with 1000m, using TwoRayGround  
propagation model.
I have for 300m , the following output:
distance = 300
propagation model: TwoRayGround

Selected parameters:
transmit power: 0.281838
frequency: 9.14e+08
transmit antenna gain: 1
receive antenna gain: 1
system loss: 1
transmit antenna height: 1.5
receive antenna height: 1.5

Receiving threshold RXThresh_ is: 1.76149e-10


Then, I applied with the same parameters for distance 1000m, and I  
have the following output.
distance = 1000
propagation model: TwoRayGround

Selected parameters:
transmit power: 0.281838
frequency: 9.14e+08
transmit antenna gain: 1
receive antenna gain: 1
system loss: 1
transmit antenna height: 1.5
receive antenna height: 1.5

Receiving threshold RXThresh_ is: 1.42681e-12

I used the first receiving threshold 1.76149e-10 with distance of 300m  
of communication range. And I find that the communication is close to  
300m.

However, when I increased the distance with 1000m of communication  
range (RXThresh_ is: 1.42681e-12), then I found that the maximum  
communication range between nodes is 550m.
It seems strange to me, that's why I want to ask, if I had to change  
the initialization parameters (Frequency, Transmission Power,..),  
because I didn't change them (I used them as their default parameters  
in threshold.cc file).

Could you please, give me a hand, and if I have to modify some other  
parameters in WirelessPhy.

Thank you, and
Best regards.

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