________________________________ From: ChemE Stewart [mailto:[email protected]] Sent: Thursday, December 12, 2013 5:23 PM To: [email protected] Subject: Re: [Vo]:OT: 9th Grade Science Project: WiFi prevents seed germination
Yes, those are NEXRAD 750,000 watt pulsed Dopplers there are another 50 or so TDWR 250,000 watt airport pulsed weather radars. Not shown. No long term studies have ever been done On Thursday, December 12, 2013, Chris Zell wrote: http://www.wunderground.com/radar/map.asp You mean these? ________________________________ From: ChemE Stewart [mailto:[email protected]<javascript:_e({},%20'cvml',%20'[email protected]');>] Sent: Thursday, December 12, 2013 5:01 PM To: [email protected]<javascript:_e({},%20'cvml',%20'[email protected]');> Subject: Re: [Vo]:OT: 9th Grade Science Project: WiFi prevents seed germination I am focusing on the pulsed klystrons in the NEXRAD weather and TDWR stations On Thursday, December 12, 2013, Chris Zell wrote: ERP is not the same thing as raw wattage 'into the waveguide'. It involves antenna gain and the transmitter output can be much smaller. Many TV stations saw huge reductions in energy use after the digital transition. With analog, you needed a really strong signal to look good. With digital, you either get a perfect picture or no picture at all. Cell transmitters can be relatively small for this reason ( compared to an analog transmission). I wouldn't worry about RF generally except to the extent that people have a transmitter (cell phone) on their person.
