Tag: Science and Technology

Head-zaps, otherwise known as cell phone radiation levels, messing with your brain? Nobody knows. What we do know is that cell phones emit radiation, just as radio and TV stations do at somewhat higher levels. What we also know is that nobody cares much. The back-and-forth going on between legislators and cell phone industry lobbyists suggests that a few people do care… but it’s a long road from caring to understanding to any kind of meaningful action.

In California, where local and state efforts to increase information made available to consumers have met with mixed results, an explanation in the Letters section of today’s San Francisco Chronicle offers some interesting perspectives. To understand them, it helps to know about the city’s Sutro Tower (above), a looming structure completed in 1973 and now furnishing transmissions for 11 TV stations, 4 FM radio stations and about 20 wireless communication services.

Local electrical engineer Bill Choisser has this to say:

The power of radio waves falls off as the square of the distance. This means one watt an inch from your head (typical for a cell phone) has the same effect as 1 million watts 1,000 inches from your head. The strongest TV signals on Sutro Tower run i million watts. A thousand inches is about 83 feet. Whether putting your head 83 feet from Sutro Tower every time you talk on the phone bothers you, is up to you.

San Francisco’s board of supervisor’s voted last week to require disclosure of the measure of cell phone radiation next to sales displays, something unlikely to make the tiniest bit of difference to sellers, buyers or anyone else. The FCC has a similar requirement likely to make even less difference.

CNET’s Christina Jewett, on her California Watch blog, summed up some of the action at the state level, where Sen. Mark Leno‘s bill to make radiation level information more accessible recently died. Leno emphasizes, in a statement on his website that there’s no definitive evidence that cell phone radiation causes cancer or other illnesses. Supporters argue that there are potential health effects dangerous enough to warrant making more information available, Jewett explains, while opponents termed the whole business expensive and unnecessary.

When the bill was a going concern, it did little to slow the never-ending party that lobbyists for AT&T Inc., one of its chief opponents, tend to host at Arco Arena. The firm spent about $535,000 on lobbying during the first quarter of this year. From Kings games to Disney Stars on Ice to a Valentine’s Super Love Jam, legislative staffers continued to enjoy the hospitality. (Details below).

Whether the lobbying effort led to the bill’s demise may never be known. But the debate at least is bringing out more information on the issue, one that regulators and scientists pledge to keep watching.

Given the number of Americans walking around (or sitting, or standing in place) with cell phones plastered to their ears, I for one am happy that somebody is watching… and that Bill Choisser is explaining.

State hangs up on expansion of San Francisco phone law | California Watch.