33 Years of the Digest ... founded August 21, 1981
Copyright © 2015 E. William Horne. All Rights Reserved.
The Telecom Digest for Jan 18, 2015
|To those who work outside Washington, I would send a special message. At times it may be frustrating when it seems that the head office is thousands of miles away and the message is not getting through. But if I may, I'm going to issue a verbal Executive order: We're going to listen, because the heart of our government is not here in Washington, it's in every county office, every town, every city across this land. Wherever the people of America are, that's where the heart of our government is. - George H.W. Bush|
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|Date: 17 Jan 2015 00:41:43 -0000 From: "John Levine" <firstname.lastname@example.org> To: email@example.com. Subject: Re: The Town Without Wi-Fi Message-ID: <firstname.lastname@example.org> > I can say, though, that a few decades ago, when my hearing was > keener than it is today, I could often tell which motel rooms were > occupied by hearing their television set's horizontal sweep > oscillator's uniquely high-pitched squeal Oh, sure, I could hear it too. But the alleged electrosensitives appear to be selectively sensitive to stuff they've read about. Cell phones use frequencies that used to be assigned to UHF TV, but cell towers rarely are as much as 100W, while UHF [transmitters use] multiple megawatts. If people were really as sensitive as claimed, there would have been giant Zones of Death around TV towers for the past 60 years.|
|Date: Fri, 16 Jan 2015 18:48:11 -0500 From: Julian Thomas <email@example.com> To: firstname.lastname@example.org. Subject: Re: The Town Without Wi-Fi Message-ID: <2B35260F-BA0C-439E-B8D4-E5BE964FC16A@jt-mj.net> > On Jan 14, 2015, at 19:51, Fred Goldstein <fg_es@ionaryQRM.com> wrote: > I'd like to see a scientifically-valid blind test on these > self-proclaimed electrosensitives. Put them in a room and turn on > and off various frequencies and power levels, not telling them when. > Let them tell when it's on or off. IIRC the 'electrosensitives' in the Greenback area are sophisticated radio telescopes, not human. https://public.nrao.edu/tours/visitgbt jt - email@example.com Silence is evidence of a superb command of the language [in this case Radio silence?]|
|Date: Fri, 16 Jan 2015 18:29:39 -0500 From: Fred Goldstein <fg_es@ionaryQRM.com> To: firstname.lastname@example.org. Subject: Re: The Town Without Wi-Fi Message-ID: <email@example.com> On 1/15/2015 1:00 AM, tlvp wrote: > On Wed, 14 Jan 2015 17:14:51 -0500, Bill Horne wrote: > >> ... I'm not qualified to say whether "electrosensitives" can actually feel >> the energy coming from a wi-fi transmitter, ... > > Nor am I. > > I can say, though, that a few decades ago, when my hearing was keener than > it is today, I could often tell which motel rooms were occupied by hearing > their television set's horizontal sweep oscillator's uniquely high-pitched > squeal from outside their locked entrance doors. Utterly mystified my > spouse of the time, who couldn't hear that squeal at all, even while seated > directly in front of a TV. > > So I'd rather give the "electrosensitives" the benefit of the doubt :-) . > Analog TV sets have a high-powered horizontal sweep oscillator running at 15,734 Hz. That's within the range of a young human's hearing. Now theoretically the electrical signal does not radiate, but the magnet sits on the tube and physically oscillates a little with the signal, so it really does put out an audible tone -- I could hear it too, back in the day. WiFi, on the other hand, is low power microwave radio, so unless it's powerful and you're close to the source, human detection strikes me as improbable. Note however that if you are actually sitting next to a high-powered AP (I like my MikroTik "1 watt" router/AP but don't turn it all the way up), you are probably taking a bit of a risk. The so-called electrosensitives, however, seem to detect it from afar.|
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