you are making presumtions based on thin air, with no basis in anything..  Unsafe to do so at this point.  If you want to destroy ota tv reception, you could ask for nothing better than wsds.  How about making them operate on the ISM bands?  Then, they'd only interfere with radio diathermy, wi-fi and microwave ovens.

John Willkie

-----Original Message-----
From: Richard Hollandsworth
Sent: Oct 3, 2007 6:19 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: News: Microsoft, Philips Offer New White Space Test Results

Again---what are the scenaria????

WSD was primarily postulated to provide low-cost W-L broadband  access service.

I would presume a service provider would distribute a bunch of (licensed? fixed frequency?)
WSD access points throughout the community, to which the user's WSD would
simply find
and start using---easy peasy---and EMI  could be "managed"....maybe even co-channel issues.

Another postulated use is an internal house wireless router--because WiFi is congested.
This I think is where WSD will have the most problems....
Perhaps CH2-6, CH14-20, CH52+ (whatever) can be assigned for their use....
PS: In all of California, only Eureka in the far North uses CH2-6.

Re: "Hacker Protection Measures":
W-L BB Service application should be able to restrict WSD XMIT to only assigned freqs.

Internal House W-L Router app. is not so easy--but if you presume that it must have
some sort of BB connection either prior to
or after initial set-up, then it is possible to
verify that the "zipcode-plus" (or whatever) info input by the user is consistent with the
location of attached service provider...give or take some exceptions (e.g. SAT BB service).

WSD filings also describe a "Beacon Service" alternative that would list permitted freqs.

Or include a dual-purpose WSD/ATSC decoder chip and stop WSD transmissions
if the system detects a location error....give or take a long range tropoduct event!!!!!

holl_ands