The Nano series is unable to be used as a wattmeter, or current source.
A better choice would be a Bird or Telewave Wattmeter, or an Eagle return loss bridge.
Even the output of the Nano, is not enough to properly measure SWR/Return loss.
Rudimentary measurement might be possible, but you might suffer from distortion or coupling from external sources.
Best cure, is to try it for yourself.
