Grain Management has completed its $2.9 billion acquisition of 13.5 MHz of T-Mobile's 800 MHz spectrum (817–824/862–869 MHz), after the FCC approved the deal last month with conditions deliberately designed to push the private equity firm into a satellite direct-to-device (D2D) partnership.

The sale closed last week. It covers almost 2,000 regional licences spanning 3,224 counties and the entire US population — spectrum T-Mobile originally picked up through its $26 billion merger with Sprint in 2020. In exchange, T-Mobile receives Grain's entire 600 MHz portfolio: 2 x 5 MHz paired licences covering 212 counties and roughly 15% of the US population.

Grain operates no terrestrial or satellite network. Its business plan is to lease the 800 MHz holdings to satellite D2D operators such as SpaceX and Amazon Leo. According to a Bloomberg report, SpaceX and AST SpaceMobile are both interested in acquiring the spectrum, now valued at around $6 billion — more than double what Grain just paid.

Who wins from the deal?

Gökhan Tok, associate director for space and connectivity at Access Partnerships, calls T-Mobile "the clear winner". He expects AST SpaceMobile to be the operator that ultimately strikes a deal with Grain, citing its recent 800 MHz connectivity testing.

"AST will monetise this and what kind of profit will Grain be able to take? I think that is a bit risky [for Grain], but I think that it would work for AST," Tok said. "They are close to getting a valuable, nice piece of spectrum for themselves without being tied to a mobile operator."

AST is the only prospective partner with satellite systems already available, Tok noted, and the FCC will not want the spectrum sitting idle for long.

What did the FCC waive?

The spectrum carries heavy regulatory baggage. Sprint's original divestiture plan — a $3.59 billion sale to EchoStar — collapsed in 2024 after EchoStar missed several payment deadlines. The FCC acknowledged that "for years, this 800 MHz spectrum has not been used to its fullest potential while T-Mobile has attempted to divest its licenses".

T-Mobile petitioned the FCC in March, arguing the licences would be "highly valuable to satellite D2D operators" as well as mobile operators. The Commission agreed and granted several waivers:

• Relief from the permanent discontinuance rule, which normally terminates a licence after around 180 days of non-use, keeping the licences valid during a transaction and rollout phase.
• A waiver of Part 90 rules, allowing the spectrum to carry any type of service rather than strictly terrestrial mobile.
• Partial relief from the renewal standard that would have blocked renewal if Grain missed build-out requirements.

Why did the FCC attach tougher conditions?

The waivers raised spectrum warehousing fears. Republican Senator Ted Cruz wrote to the FCC two weeks before approval, calling for "specific enforceable deployment requirements".

"This raises serious questions as to whether Grain intends to quickly and efficiently put this spectrum to the highest and best use or whether it intends to let it sit idle, wait for the valuation to rise, and flip it for a profit," Cruz wrote.

The FCC's response: Grain must complete a terrestrial build-out in eight years — "faster than nearly all post-auction deadlines under our rules". Grain had asked for 12 years, then shortened it to nine. By 1 July 2034, Grain must serve 66% of the population or 50% of the geography of any licence, or lose it permanently — though the deadline drops to seven years if Grain covers 33% of the population within three years.

What are the D2D deadlines?

The FCC is explicitly steering Grain toward a satellite partner. By 5 November 2026, Grain must complete a "competitive process" for a partner and notify the Commission. By 4 December 2026, it must file for a secondary satellite licence. Success swaps the terrestrial build-out for D2D-tailored requirements mirroring the SpaceX–EchoStar deal:

• By 2029, service availability of 70% of the time across 90% of a licence's geographic area, rising to 90% of the time by 2036.
• By 2029, at least 100 kbps uplink for 95% of users over 90% of the area, rising to 300 kbps by 2036.
• By 2029, 300 kbps downlink and 100 kbps uplink, rising to 600 kbps downlink and 200 kbps uplink in 2036.

Failure, the FCC warned, means Grain "will face a less certain outcome".

Is spectrum speculation becoming a trend?

Grain is unusual: a company with no network, no auction history, acquiring spectrum purely to lease it, through the secondary-market transactions the FCC has spent the past year encouraging. The contrast with EchoStar — which decommissioned its terrestrial network and is divesting thousands of unused licences accumulated over two decades of auctions — is stark.

"I hope the rest of the world will not continue this trend, because if this continues and investment firms start to buy and sell spectrum rights as an asset, and try to increase profitability… the user will suffer because costs will increase," Tok said. He also questioned whether the FCC's elaborate conditions were worth the effort: "I am not sure if all of these efforts were actually necessary – could there have been faster and easier ways?"

The clock is already running: Grain has just over a year to run its partner selection process and file for satellite authorisation if it wants the lighter D2D build-out path.