Shouldn't retail stores be advertizing this before it gets too too LATE???? 
In a nut shell, if your wireless mics/systems work between 698 MHz ~ 806 MHz spectrum, it will soon be 'useless' in the USA !!!!!!
USA. As Congress tries to decide whether to push back the long-
planned transition to Digital TV on February 17, a lesser-known 
digital move-out will take place the same day...and many of the 
people it affects are completely unaware of it.
Last year, the FCC reallocated and partially auctioned off the 698 
MHz to 806 MHz spectrum, generally referred to as the 700 MHz 
frequency band. The space, previously used for TV channels 52 through 
69, will now be home to public safety and commercial users--which 
means wireless mic users with gear operating in that spectrum have to 
vacate the premises by mid-February. Many end-users, however, have no 
idea that the move is coming.
"Among those who are actually touching the mics and using them--
musicians, houses of worship, et. cetera--people are pretty much in 
the dark," said Michael Pettersen, Shure's director of applications 
engineering.
Many fellow manufacturers concur. "We've gotten a lot of calls in the 
last month as people learned of it, but considering the number of 
units that are out in the field, very few people are aware of the 
situation," said Dave Egenberger, wireless mic product manager, 
Electro-Voice. 
"In general, rental houses and broadcasters have been on top of the 
issue, as well as many houses of worship, but many independent 
musicians and video producers only heard about it recently," 
confirmed Joe Ciaudelli, wireless spokesperson for Sennheiser. Joseph 
Wagoner, product manager for wireless tour/installed sound at AKG, 
predicted, "There will be a lot of end users who operate one or two 
wireless systems who are not going to be aware until they are forced 
one way or another to confront this issue. I believe most 
manufacturers have made a great effort to get the word out on this 
issue to their customers and to the general public."
If end users are unaware of their upcoming legal responsibilities 
regarding wireless mics, it wouldn't be the first time; Cliff Castle, 
vice president of sales and marketing at Audix, noted,  "My sense is 
that most end users are not aware of the change, and if they are, 
they are probably confused about what it means; after all, most users 
are not aware that they are required by FCC to have a license to 
operate wireless systems."
The FCC itself is adding to the confusion, having yet to offer 
definitive rulings on many aspects of the transition, despite the 
fact that the massive mic migration is only a few weeks away. 
Notably, there are currently no set parameters on how the move will 
take place or what happens to users who may unwittingly use the 
frequency band after February 17.
That said, the FCC has moved forward on a few issues, as Jackie 
Green, vice president of R&D engineering at Audio-Technica, pointed 
out, noting, "No further type approvals are being allowed for 700 MHz 
systems--this means no new product development or importation in this 
band. However, the FCC has not yet stated how it will handle existing 
licensed wireless users in the 700 MHz band. We are hoping--and 
requesting-- that if existing users are asked to vacate, [that] the 
FCC considers a two-year transition period."
That may or may not happen--many wireless microphone manufacturers 
banded together through the Professional Audio Manufacturers Alliance 
(PAMA) trade group to file ex parte comments with the FCC on January 
5 regarding expected negative effects of a hasty, disruptive 
transition. For those manufacturers, it's imperative that they make 
their customers aware of the changes arriving in the coming weeks. 
Audix's Castle explained, "As a secondary user, you must not 
interfere with users holding a license to operate. The FCC will hunt 
you down if, as a low power secondary user, you are causing 
interference for any of the legal owners of this bandwidth, and you 
will be asked to shut down your systems, licensed user or not."
Hoping to drive the point home, companies investing in the 
reallocated 700 MHz spectrum are lobbying the FCC to levy heavy fines 
against mic users who trespass into the spectrum. Whether any 
wireless mic users would actually be hit with a fine, however, is 
another story. 
Karl Winkler, director of business development, Lectrosonics, 
opined, "It is highly unlikely that the FCC will have the resources 
to police the spectrum, because they can't do it right now in the UHF 
band in general. They have essentially turned a blind eye to the use 
of wireless mics over the past several decades, since the use of 
these products has been largely benign. The only instances where I 
could see the FCC getting involved is if one of the spectrum owners 
has reports of interference, and it is tracked down to a wireless mic 
user--but since UHF wireless mic systems are so low powered, even 
this is an unlikely scenario."
Even so, wireless mic users who plan to cross their fingers and 
continue using the 700 MHz band may be looking for trouble. 
Sennheiser's Ciaudelli offered, "Once the FCC ratifies a deadline 
prohibiting wireless mic use in that band, heavy fines could be 
levied on anyone that does not comply. Typically, the FCC reacts to 
specific complaints, and they are likely to be far more vigilant with 
complaints of unauthorized use of channels 63-64 (764-776 MHz) and 68-
69 (794-806 MHz) which are reserved for emergency communication. "
It's worth pointing out, however, that wireless mic users will have 
other reasons to move on; once the spectrum's new tenants move in, 
the 700 MHz band will likely remind wireless mic users of Baseball 
great Yogi Berra's famous quote: "Nobody goes there anymore; it's too 
crowded."
According to Shure's Pettersen, "What will ultimately happen is that 
users may one day find that they are taking hits and getting 
interference from new devices using the bandwidth. Instead of 
transmitting 100 feet, they will only go about 10, and so on. Changes 
are coming, and we all have to prepare."
For AKG's Wagoner, however, that's something worth welcoming: "I 
believe it to be a catalyst for change; this is a historic time with 
the change to all digital television-- and with change comes 
opportunity. At AKG Acoustics USA, we have a great opportunity to 
present some of the new products."
An influx of new wireless gear into the hands of end-users will do 
more than benefit the manufacturers; Lectrosonics' Winkler pointed 
out, "users with low-cost, low-quality wireless mics will have to 
replace them, and this is not a bad thing for the industry or the 
users. This change in regulation may provide the impetus for them to 
go ahead and budget for new systems."
For end users who don't have the financial reserves at the moment, 
there's hope for them too--at least temporarily, as EV's Egenberger 
observed: "In the short term, once they turn off the analog TV 
stations below 700 MHz, there's more spectrum available to us in the 
short term. Till they open up the whole white space thing--which is a 
totally separate issue."
Audio-Technica' s Jackie Green took perhaps the widest view of the 
situation, however, and pointed out a critical factor that could be 
easily overlooked: "We should not forget that one very important 
reason the FCC is clearing this band is to ensure coordinated safety 
communications for everyone. That certainly qualifies as a silver 
lining."