Radio Voice Transmission

local NeRad = nil
local function GetNRad(listener)
local Rads = ents.FindByName("M_Transmittion_Radio")
for i = 1, #Rads do
    if NeRad == nil or listener:GetPos():DistToSqr( NeRad:GetPos() ) > listener:GetPos():DistToSqr( Rads[i]:GetPos() ) then NeRad = Rads[i] end
end
end

hook.Add( "PlayerCanHearPlayersVoice", "Maximum Range", function( listener, talker )
    GetNRad(listener)
    if listener:GetPos():DistToSqr( talker:GetPos() ) > listener:GetPos():DistToSqr( NeRad:GetPos() )  and Entity(listener):HasWeapon("M_Portable_Radio") then
		return false
	end
end )