<div dir="ltr">1 Watt into 30db gain results in about an RF power density 1m in front of the feed element of 8W/m^2 Based on World Health organization recommendations the safe levels are that of 0.4W/kg. So as long as your mass is more 7lbs you should not have any adverse effects from incidental body heating from time-limited exposure to being right in front of the radiating element. </div><br><div class="gmail_quote"><div dir="ltr">On Sun, Jan 13, 2019 at 5:12 AM Bill Vodall <<a href="mailto:wa7nwp@gmail.com">wa7nwp@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> Perhaps the other difference is that the antennas on the Nodes are potentially much more directional. A 1 watt signal into a 30 dB antenna is equivalent to 1000 watts.<br>
<br>
Antennas focus - they don't amplify. A 1 watt signal is still 1 watt<br>
- it's just focused in one direction instead of being spread out in<br>
all directions.<br>
<br>
Still worthy of concern and care, don't aim it at your eyes and run<br>
low power when possible, but it's no microwave oven..<br>
<br>
Bill,<br>
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</blockquote></div>