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T-Mobile 600MHz Testing Commencements by Market

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Tim McCulloch:

--- Quote from: Bob Charest on June 30, 2017, 10:07:32 am ---Hi Henry,

Thanks for posting this. As someone who lives right near Portland, ME I'm going to have to take action in the short term, it appears. All that is left to work with is between 642 and 668... pretty cramped!

Best regards,
Bob Charest

--- End quote ---

I think you need to be looking lower, below TV Ch 37.  There was some discussion about using guard bands but I don't recall the legality of using vacant blocks in the 600mHz band.

Bob Charest:
Thanks Tim - I'll check. This is just a stopgap measure for me as things are coming at us quickly.

I know we have to vacate. 600MHz by end of 2018...


Sent from my iPhone using Tapatalk

Henry Cohen:

--- Quote from: Tim McCulloch on July 08, 2017, 12:19:21 pm ---I think you need to be looking lower, below TV Ch 37.  There was some discussion about using guard bands but I don't recall the legality of using vacant blocks in the 600mHz band.
--- End quote ---

It will not be legal (sans an STA) to use vacant blocks after the transition period concludes in July 2020, just as it's not legal to use fallow 700MHz channels.

Nor will it be legal to use the two 1MHz guard bands (616-617 MHz and 652-653 MHz).

The 600 MHz spectum above 614 that will be available to wireless mics are*:
614-616   Unlicensed wireless mic operations only.
653-657   Part 74 licensed operation only (part of the duplex gap).
657-663   Shared unlicensed mics and TVBD/WSD (part of the duplex gap).

*20mw ERP maximum.

TJ (Tom) Cornish:

--- Quote from: Henry Cohen on July 09, 2017, 08:48:14 pm ---It will not be legal (sans an STA) to use vacant blocks after the transition period concludes in July 2020, just as it's not legal to use fallow 700MHz channels.

Nor will it be legal to use the two 1MHz guard bands (616-617 MHz and 652-653 MHz).

The 600 MHz spectum above 614 that will be available to wireless mics are*:
614-616   Unlicensed wireless mic operations only.
653-657   Part 74 licensed operation only (part of the duplex gap).
657-663   Shared unlicensed mics and TVBD/WSD (part of the duplex gap).

*20mw ERP maximum.

--- End quote ---
Henry, do you have an FCC source for this information?  The "layman's page" on the FCC website seems to indicate the guard bands and duplex gap will be available for wireless microphone use indefinitely. 

https://www.fcc.gov/general/wireless-microphones-0

"Spectrum will continue to be available for wireless microphone use on the other TV channels 2-36 (TV band frequencies that fall below 608 MHz), on portions of the 600 MHz guard band (the 614-616 MHz frequencies) and the 600 MHz duplex gap (the 653-663 MHz frequencies), and in various other spectrum bands outside of the TV bands."

Henry Cohen:

--- Quote from: TJ (Tom) Cornish on July 28, 2017, 04:55:39 pm ---Henry, do you have an FCC source for this information?  The "layman's page" on the FCC website seems to indicate the guard bands and duplex gap will be available for wireless microphone use indefinitely. 

https://www.fcc.gov/general/wireless-microphones-0

"Spectrum will continue to be available for wireless microphone use on the other TV channels 2-36 (TV band frequencies that fall below 608 MHz), on portions of the 600 MHz guard band (the 614-616 MHz frequencies) and the 600 MHz duplex gap (the 653-663 MHz frequencies), and in various other spectrum bands outside of the TV bands."
--- End quote ---

My "source" is multiple FCC NPRMs, the FCC post auction data and T-Mobile for the various bits of information I'm able to disseminate and provide in a more coherent manner. I'm not quite sure what you're asking; the FCC statement you quote matches what I posted earlier. (Just note though that wireless mics will not permitted in the two 1MHz guard bands at 616-617 and 652-653.)

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