This switch doesn't happen up here in Canada until Aug 31, 2011.
Is it safe to assume wireless tech will still work until at least that date?

It may depend on how close you live to the border. If you happen to be performing in Windsor, and the digital TV folks in Detroit are going ahead full steam it's pretty much like they're just across the street.

A lot of places in Windsor are far closer (for an example) to Detroit than they are even to the other side of Windsor!

Which conversion are you referring to? All the TV signals will be converting to digital in Canada in February of 2009.

Brian

Perhaps I'm reading it wrong. This is the Industry Canada link:
http://www.ic.gc.ca/epic/site/oca-bc.nsf/en/ca02336e.html

Thanks, Owen! I LOVE it when someone posts a credible source!
USA, Feb 17 '09
Canada, Aug 31 '11

Sennheiser has just posted a document on their site. It offers a different view from Shure's, although interpretations seem to be shifting as data & evaluations continue to evolve.
Sennheiser's latest, Nov 18 '08
Shure's latest, Nov 4 '08

I know the date has been moved to June 12, 2009 for the required transition but do we really know anything more on this issue?

Fitz

The NADY site seems to be saying that my UHF mike is still good to use. http://www.nady.com/white_space.html

I'm seeing conflicting info out there and the FCC website is just a mess of jibberish! Does anyone really know what UHF mike frequencies are NOW good to use without a license, in the U.S.?

This will mostly effect those in Big cities were a lot of channels are in use by TV, Police & others. In small towns you should be all right unless you are unlucky and have your frequency stomped on. Either way you should always by a wireless set with multiple channels to choose from. The more expensive sets can now do automatic frequency searching to find a free channel.

The issue is not that it will stop working it just may drop in and out with interference

You should be clear to use all the old wireless frequescies with out a license because you are transmitting at low power and any high power transmitter will overpower it. the problem is when you are performing your system may drop in and out or receive unwanted noise.