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T-Mobile Eases 600 MHz Transition for Wireless Users

T-Mobile adds notification service for RF pros, more.

Bellevue, WA (April 4, 2018)—T-Mobile published an updated list of current and projected deployments of its 600 MHz services on its How Mobile Works website and has also added a new sign-up feature for those wishing to receive monthly notifications.

Following its $8B investment in 31 MHz of the 600 MHz band in 2017, T-Mobile has endeavored to be a good neighbor to current occupants of the spectrum as the carrier has rapidly rolled out its new services. A dedicated website, How Mobile Works, provides extensive information and resources for entities and individuals impacted by T-Mobile’s 4G LTE, 5G-ready infrastructure build-out.

“After deploying the world’s first 600 MHz antennas for wireless service in August 2017, our network of 600 MHz antennas is already deployed across 1,000+ cell sites covering hundreds of thousands of square miles. By year-end 2018, we will have well over 10,000 sites on-air,” states the website’s Spectrum page (

An adjacent section, 600 MHz Band Notifications By County, provides the latest information on current and future deployments. “We recommend that ancillary equipment occupants of the 600 MHz band bookmark this page and periodically check our two documents showing spectrum blocks where T-Mobile will soon deploy wireless services,” it states. Ancillary equipment includes wireless microphones, in-ear systems and comms. Operators of wireless audio equipment must vacate the impacted 600 MHz spectrum as soon as any new licensees begin operations or risk a fine.

FCC Changes Spark Wireless Mic Evolution

The FIPS Notification document has been updated to reflect the status of T-Mobile’s 600 MHz operations. This latest Excel document, dated March 28, 2018, includes updates to the timing of T-Mobile’s deployments in many counties that were included in earlier notices, not just new deployments. “We recommend that you review the entire list, not just the new counties,” writes Mark Bishop, T-Mobile’s Senior Manager, Spectrum Management, in a recent notification to wireless audio equipment manufacturers, operators and frequency coordinators.

FIPS or Federal Information Processing Series is a county-level designation developed by the American National Standards Institute (ANSI) and maintained by the U.S. Census Bureau. T-Mobile has previously noted that it is unwilling to be more geographically specific about its deployments for commercial reasons.

To further help current incumbents of the spectrum and other interested parties, T-Mobile has added a button that takes visitors to a registration page (, where they can sign up for monthly updates.

T-Mobile – How Mobile Works •