Hi, i want to set my radio propagation range for each mobilenode to 225m and
the channel to operate at 2Mbps

1) for the channel bandwidth i read this the way to set it in the tcl script
Mac/802_11 set dataRate_ 2Mb
but do i need to set Phy/WirelessPhy set bandwidth_ 2Mb also? are they the
same thing or i just need to set one of them?

2) for the radio range i found info abt setting it below:
*Phy/WirelessPhy set RXThresh_ <value>*

To compute this appropriate value:

*threshold -m <propagation-model> [other-options] distance* 

my qns is does it matter which propagation-model i'm using?  i'm using
manhattan model for my scenario, so do i need one that fits in my scenario?
or any will do? thanks!

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