#include "signal.hpp" Signal::Signal(const Location& location, double dbStrength)    : m_location(location), m_dbStrength(dbStrength) { } Signal::Signal(const Signal& rhs)    : m_location(rhs.m_location), m_dbStrength(rhs.m_dbStrength) { } Signal::~Signal() { } SignalPtr Signal::clone() const {    SignalPtr p(new Signal(*this));    return p; }