Subject: [NEXTEL-1] More on Tettra & The 17.6 Hz Signal

From: Marcel <[email-masked]>
Date: Thu, 17 Apr 2003 05:06:08 -0400

http://www.starweave.com/page8.html

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You may be interested in this missive [click here] from Airwave mm02 - clearly a standard response - received by one of our parish councillors recently. A local district councillor also confirms that they received an identical letter. As well as the usual hype and avoidance of significant issues (such as research they don't like, police symptoms they'd rather weren't mentioned, etc) I think two of their observations are worth noting:

1. "Devon & Cornwall Constabulary is due to go live with the new service next year. However, public concern about the safety of the transmitters that are needed to operate the service has caused severe delays in the planning process and now threatens our ability to provide the necessary infrastructure to allow the Police to operate the system."
(under ‘About Airwave’)

This highlights the serious extent of public opposition across the South-West, also the fact that this opposition is proving effective despite severe government pressure on planning authorities. This can ONLY be because that opposition is based on substantive material fact - irrational concern could not carry that much weight with so many people, and certainly not with planning bodies pressured to accept applications.

This SHOULD, in any rational world, be causing those in authority to pause and think what it is they might be doing that so many of their electorate are so strongly opposed to.

Also, if their ability to provide the necessary infrastructure is being threatened, is there not a need to address THAT problem? No point in putting in a 'bitty' partial solution where they can get away with it (which is actually no solution at all, since it will provide less good cover than existing systems), throwing up their hands, and saying 'but the naughty residents wouldn't let us do the rest!'

Both of these points are clearly indicative of the ineptitude of those who are trying to push this through.

2. "we have been happy to co-operate with independent testing of our transmitters undertaken by the UK's National Radiological Protection Board and by other independent experts. Their reports demonstrate that Airwave transmitters do not pulse at 17.6Hz but transmit a near continuous signal in the range of 380 to 400 MHz, which is a similar frequency to TV transmissions and nowhere near the frequencies of the human brain.

These tests have shown that there are tiny trace elements of the 17.6Hz frequency in the signals from the transmitter but these are miniscule variations and there is no evidence of pulsing. The attached diagram demonstrates that the 17.6 Hz component of the signal is hundreds of millions of times below the safety standard, even close to the transmitter."

(under ‘Pulsing Issues’)

We at last have Airwave admitting that there's something going on at 17.6Hz in the mast output - but of course it's not pulsing! OK let's go back to the term used in the Stewart Report, when dear old Colin Blakemore himself warned that "amplitude modulation around 16Hz should be avoided". We now have 'near continuous' (which is another way of saying 'discontinuous') where we used to have 'continuous', and we have 'variations' (miniscule, of course!) - which is pretty well synonymous with 'modulation'. There you have it: Airwave are telling us that their mast output goes up and down, regular as clockwork, 17.6 times a second - which is just what we've been trying to tell them and they've denied. As for 'billions of trillions of zillions of times below the safety standard' there is no defined safety standard for pulsed, sorry, regularly-varying microwave transmissions. The 'safety standard' (such as it is) is specifically in relation to heating effects - and we're now (finally) outside that particular box. As Dr. Hyland has been trying to educate them about for years, regularly-varying (being pc here) transmissions affect living organisms through their frequency, not through their energy content. So again they're talking gobbledygook.

Just a brief word on the 'attached diagram': This actually shows nothing except that the Communications Dep't of Airwave is misnamed. If this diagram were submitted as part of a first-year undergraduate I.T. assignment it would attract only criticism on various counts. For example, even if the 'safety standards' were relevant to the 17.6Hz issue, what on earth is meant by '17.6Hz component' in relation to those standards?? I don't know, and I have substantial experience in comms. As it stands, that concept is meaningless - except in a very technical sense, totally out of keeping with this diagram and with any sensible safety analysis.

My reading of this diagram is that it’s intended to make your average Joe Public think ’Mm, highly technical. I don’t know what it’s about, but then I’m not a scientist. They obviously know what they’re talking about and they say it’s safe, so...’.

Not a bit of it Joe, don’t be fooled by the smokescreen.

OOPS, WHAT A GIVEAWAY!
(Courtesy of Airwave mm02)

- undermining its own foundations