The antennas that we use will emit and receive radio waves (like all other radios). We are using radio waves in the 5 GHz range. All wi-fi, like a home wireless router, generally operates in the 2.4 GHz range or the 5 GHz range.
The antennas we are using are FCC-approved and similar to the 5 GHz radio in your wifi router, cell phone, or iPad. Per FCC guidelines at the 5 GHz range, our radios will be transmitting at no more than 1 Watt of power. Ultimately, the amount of radiation you are exposed to by any radio is dependent on the frequency of the radio waves, their power, and your distance to the source (the further away, the less exposure). So the best analogy for our service is that we’ve simply put a home wi-fi router onto your roof.
To put this in context, the total transmit power for our antennas is 5-10 times less than your cell phone.
Here are a few useful websites if you want to learn more: https://www.fcc.gov/consumers/guides/wireless-devices-and-health-concerns; http://www.niehs.nih.gov/health/topics/agents/emf/