Todd Weaver

600mhz RF band going away?

46 posts in this topic

here is more:

" With regard to wireless mics, the commission released a Notice of Proposed Rulemaking that will serve as a framework for their usage and protections in the reduced TV band. The NPRM also suggests opening up additional spectrum bands for wireless mics.


Wireless mics have operated for decades as unlicensed devices in unused TV frequencies. The 2010 order opening those unused frequencies, or “white spaces,” to new types of unlicensed devices triggered a two-channel set-aside for wireless mics. Those channels were to be in the UHF spectrum, which is the incentive auction target area. Since the passage of the incentive auction bill in early 2012, wireless mic manufacturers have been hamstrung by not knowing what frequencies ultimately will be available to users.

“It’s forced all of us to take a step back,” David Marsh of Audio-Technica told
TV Technology correspondent Steve Harvey in March. “The last thing we want to do is introduce an analog, or even a digital, product in the 600 or 500 MHz UHF range.”

Engineering consultants say that while most broadcasters have licensed their low-power wireless gear, some may have not. Retuning may be possible in some cases, but “since the UHF band is huge, most wireless devices like that are ‘band-specific.’ Manufacturers carve up the UHF band into segments – so you have some wireless mics that work on Chs. 24-30, some that work on Chs. 30-36, etc. So many low- power devices may not be capable of being retuned.”

The NPRM is docket No. 14-266. Comment deadlines were not available at press time -
"

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http://www.tmonews.com/2014/10/fcc-commissioner-discusses-progressive-plans-wants-to-look-at-lowerhigher-frequencies/

 

Talking about looking at higher bands up to 60 gHz (want to warm up your coffee with your phone? - now you can!) seems like a good thing... BUT they are also suggesting looking LOW, like down to the 400 mHz spectrum!  :blink:  :blink:  :blink:  :blink:  :blink:

 

Its getting to be the Wild Wild West out there - If all the wireless is outlawed, soon only the outlaws will have wireless!

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Its getting to be the Wild Wild West out there - If all the wireless is outlawed, soon only the outlaws will have wireless!

Maybe it is time for the NRA to step in!  Or for us, the National WIRELESS Association.  : )

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Giordi: " looking LOW, like down to the 400 mHz spectrum!  "

400MHz is still UHF...

and actually some of our usual suspects are looking down to VHF, especially for IFB and IEM applications...

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Back to VHF hi-band!!  How about those "traveling bands" folks?

 

philp

My 20 yo Lectro 185's on the 169-171 Mhz traveling frequencys are still running smooth as silk. As it's been said: "everything old is new again."

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Maybe it is time for the NRA to step in!  Or for us, the National WIRELESS Association.  : )

 

Yes, Let's call in the National Wireless Association:

 

nwa.jpg

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Just an update for Greece. Today the Government have sold the 800 MHz and 2600 MHz bands to Vodafone, Wind and Cosmote. From 1st January 2015 the 800 MHz band will not available here.

 

Here the announcement from HTPC (Hellenic Telecommunications & Post Commission)

http://www.eett.gr/opencms/opencms/EETT_EN/Electronic_Communications/Telecoms/Licensing/RoU800_2600results10.html

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Cody: " My block 24&25 gear is not happy..."

it will continue making you money for another ~4 years...

maybe more...

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My block 24 and 25 stuff is getting super crowded in Atlanta.. 21,22 somewhat better. I ran a scan of 28-29.. There is nothing going on there..

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There are places in the USA where blocks 28 and 29 have things happening, and are active currently. 

 

These images are from Canada, but the plan is the same divisions here in the USA. As with TV services, adjacent geographical areas cannot use adjacent wireless blocks, so if location "A" is using block "A" paired... Then nearby will most likely be using the C block paired. This leaves the B block in that area open as a "guard" band...

 

700MHz-annexe2-1-eng.jpg

 

700ConsultationFigure5.2-e.jpg

 

Our tiny little transmissions in that guard space wouldn't be able to be detected unless someone happened to wander directly onto our set, and even then, they would need to know that interference had even happened and why. The beauty of these cellphone transmissions: They are self-healing! Digital signalling is affected by trees, weather, walls, etc. Lots of things cause your phone to automatically adjust its own radios, transparently to the user. 

What happens when the interference gets so bad that a call drops? 99.9% of us just look at the phone, say "aww crap" and redial. Data use (everything else) just slows down while the device adjusts. At no point does a device alert you that there is any kind of interference, and people are unlikely to complain to their provider unless the interference is consistent in a given location.

 

As such... I still say our best plan is the one that has always worked for us: Arrive at a location, scan for free air, and tune to that. The phone signals will self-heal around us, and because they are the larger power... WE have to be reactive to THEM, not the other way around.

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Jim has also explained why television stations are only a small part of the total interference picture, and that there should be several channels of wireless mics operable in any and every block at almost any place and any time...

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It will be very interesting to see what happens with the 4th round auctions! We're getting close: they are supposed to close on Jan 13th (this Friday). If anyone is interested in following the auctions, here's a link: https://auctiondata.fcc.gov/public/projects/1000

And if you want a quick tutorial about how the auctions work: http://wireless.fcc.gov/auctions/1001/resources/reverse_auction_new_stage_tutorial/presentation.html

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