AT&T Completes $22.65 Billion EchoStar Spectrum Acquisition, Reshaping U.S. 600 MHz and 3.45 GHz Holdings
One of the largest spectrum transactions in U.S. telecommunications history has formally closed, shifting a nationwide portfolio of low-band and mid-band frequencies from EchoStar to AT&T and materially changing the spectrum position of both companies.
AT&T completed the acquisition on 28 July 2026, taking ownership of EchoStar's 600 MHz and 3.45 GHz spectrum licences together with a 99-year extension of existing leases giving AT&T exclusive use of certain spectrum in Hawaii.
The total consideration associated with the transaction was $22.65 billion. At closing, EchoStar received $20.25 billion in cash, while a further $2.4 billion of the purchase consideration was deposited directly into a trust required by the Federal Communications Commission.
The acquired portfolio represents approximately 50 MHz of spectrum on a nationwide-average basis: roughly 20 MHz of low-band 600 MHz spectrum and 30 MHz of 3.45 GHz mid-band spectrum. The actual spectrum depth varies by individual market, with the FCC reporting that AT&T can acquire between 10 MHz and 40 MHz of 600 MHz spectrum and up to 40 MHz of 3.45 GHz spectrum in the affected areas.
The Transaction in One View
| Category | Details |
|---|---|
| Buyer | AT&T Mobility II LLC / AT&T |
| Seller | EchoStar Corporation and subsidiaries |
| Spectrum transferred | 600 MHz and 3.45 GHz licences |
| Approximate nationwide-average spectrum depth | 50 MHz |
| 600 MHz component | Approximately 20 MHz nationwide average |
| 3.45 GHz component | Approximately 30 MHz nationwide average |
| Market-level 600 MHz depth | 10–40 MHz |
| Market-level 3.45 GHz depth | Up to 40 MHz |
| Population footprint | Approximately 99% of U.S. population |
| Counties / equivalents | 3,155 |
| Cellular Market Areas | All or parts of 720 CMAs |
| Total transaction consideration | $22.65 billion |
| Cash received by EchoStar at closing | $20.25 billion |
| FCC-mandated trust | $2.4 billion |
| FCC docket | WT Docket No. 25-303 |
| FCC order | DA 26-470 |
| FCC approval | 12 May 2026 |
| Transaction completed | 28 July 2026 |
A Two-Layer Spectrum Acquisition: Coverage at 600 MHz, Capacity at 3.45 GHz
The strategic value of the deal comes from the very different propagation and capacity characteristics of the two spectrum layers.
The 600 MHz portfolio gives AT&T additional sub-1 GHz frequencies with strong wide-area and indoor propagation. The 3.45 GHz holdings provide a much wider mid-band capacity layer designed for high-performance 5G deployments.
Rather than acquiring two similar sets of frequencies, AT&T is therefore adding spectrum that addresses two different requirements within the same network: geographic reach and additional radio capacity.
| Band | Approximate Acquired Depth | Network Characteristic | Likely Role |
|---|---|---|---|
| 600 MHz | Approximately 20 MHz nationwide average | Low-band, strong propagation | Coverage, indoor service, rural connectivity |
| 3.45 GHz | Approximately 30 MHz nationwide average | Mid-band, wider capacity channels | 5G capacity, higher speeds, traffic growth |
EchoStar Transfers All of Its 600 MHz and 3.45 GHz Licences
The transaction is not a limited lease or selective transfer of a small number of markets. Under the purchase agreement, EchoStar agreed to transfer all of the 600 MHz and 3.45 GHz licences covered by the transaction to AT&T.
The FCC identified a footprint covering approximately 99% of the U.S. population, extending across 3,155 counties or county-equivalents and all or parts of 720 Cellular Market Areas.
The licences span the 50 states and the District of Columbia as well as U.S. territorial and offshore licensing areas.
This geographic reach explains why AT&T describes the acquired portfolio as effectively nationwide even though spectrum depth is not identical in every market.
Understanding the 600 MHz Portion of the Deal
600 MHz is one of the lowest-frequency flexible-use mobile bands available to U.S. network operators.
The broader U.S. 600 MHz mobile band uses paired frequencies around the 617–652 MHz and 663–698 MHz ranges. Individual licences are geographically assigned, meaning an operator's precise block position and spectrum depth can vary from one market to another.
AT&T is acquiring approximately 20 MHz of 600 MHz spectrum on a nationwide-average basis from EchoStar. FCC market analysis shows that the individual transferred holdings range between 10 MHz and 40 MHz depending on location.
This distinction is important: the transaction does not give AT&T one identical 20 MHz channel throughout every U.S. market. Instead, AT&T receives a geographically distributed portfolio whose average depth is approximately 20 MHz.
Why 600 MHz Is a Significant Addition for AT&T
AT&T did not previously operate a commercial network in the 600 MHz band, making the EchoStar acquisition a new spectrum layer for its radio network.
The main technical advantage is propagation. Lower-frequency signals can generally travel farther from a radio site and penetrate walls and other structures more effectively than mid-band frequencies.
This makes 600 MHz useful for several network objectives:
- extending 5G coverage across wider geographic areas;
- improving indoor signal availability;
- strengthening rural and suburban coverage;
- reducing congestion through carrier aggregation with other bands; and
- supporting a more consistent network experience between dense and sparsely populated areas.
The FCC concluded that deployment of the acquired frequencies could improve AT&T's network speed, coverage and performance, including in rural markets.
600 MHz Requires New Network Equipment
The low-band acquisition does not translate immediately into nationwide commercial use simply because the licences have changed ownership.
AT&T told the FCC that deployment requires engineering analysis across tens of thousands of sites, new radios and antenna configurations, coordination with handset vendors and careful integration alongside its existing 700 MHz and 850 MHz systems.
One technical issue identified in the FCC proceeding is passive intermodulation interference. Adding another low-frequency radio system to sites already carrying 700 MHz and 850 MHz equipment can create unwanted signals if the installation is not properly engineered.
The 600 MHz rollout will therefore involve a physical network deployment programme rather than only software configuration.
3.45 GHz Can Be Integrated Much Faster
The situation is markedly different at 3.45 GHz.
The U.S. 3.45 GHz flexible-use band extends from 3450 MHz to 3550 MHz and is used primarily as a Time Division Duplex mid-band resource. EchoStar's portfolio gives AT&T approximately 30 MHz of additional spectrum on a nationwide-average basis, with up to 40 MHz available in certain markets.
Unlike 600 MHz, AT&T already had equipment capable of operating within this frequency range. The company consequently began using portions of the EchoStar 3.45 GHz spectrum before the transaction formally closed through a spectrum-manager leasing arrangement.
The FCC cited AT&T's rapid deployment of the leased frequencies as evidence that the company intended to put the acquired spectrum into active use rather than leave it idle.
3.45 GHz Strengthens AT&T's Mid-Band 5G Position
Mid-band spectrum has become one of the most important resources for 5G because it offers a balance between coverage and large channel bandwidth.
Frequencies around 3.45 GHz do not propagate as far as 600 MHz, but they can support substantially greater capacity. This makes them well suited to urban and suburban areas where large numbers of users generate high volumes of mobile traffic.
AT&T can combine the acquired 3.45 GHz frequencies with its existing mid-band portfolio using carrier aggregation and other 5G radio techniques.
The company expects the additional capacity to improve download performance, reduce congestion and expand its ability to offer fixed wireless access alongside traditional mobile services.
Approximately 50 MHz Nationwide Does Not Mean 50 MHz Everywhere
The headline figure of approximately 50 MHz should be interpreted as an average representation of the acquired spectrum portfolio rather than a uniform channel available everywhere in the United States.
| Measure | 600 MHz | 3.45 GHz |
|---|---|---|
| Approximate nationwide-average depth | 20 MHz | 30 MHz |
| FCC-reported individual market range | 10–40 MHz | Up to 40 MHz |
| Duplex structure | Paired FDD | TDD |
| Primary network strength | Coverage | Capacity |
The exact spectrum position must therefore be evaluated market by market when analysing AT&T's post-transaction frequency portfolio.
The Deal Also Extends AT&T's Spectrum Rights in Hawaii for 99 Years
In addition to the mainland spectrum licences, the transaction includes a 99-year extension of existing leases giving AT&T exclusive use of certain EchoStar-associated wireless frequencies in Hawaii.
The extended lease arrangement forms part of the same $22.65 billion transaction structure but should be distinguished from the direct licence assignments in the 600 MHz and 3.45 GHz bands.
From Facilities-Based Network to Hybrid MNO: EchoStar's Strategic Shift
The spectrum sale fundamentally changes EchoStar's role in the U.S. mobile market.
EchoStar had invested heavily in building its own cloud-native 5G radio access network under the Boost Mobile business. Selling key terrestrial spectrum assets means that the company can no longer rely on the same standalone facilities-based network model.
Instead, EchoStar and AT&T expanded their existing network-services relationship into what the parties describe as a hybrid mobile network operator structure.
Under this arrangement, Boost Mobile continues to control important customer-facing and core-network functions while increasingly relying on AT&T's cell sites, radios, antennas and spectrum to carry subscriber traffic.
What the Hybrid MNO Structure Changes
| Network Function | Post-Transaction Role |
|---|---|
| Customer relationship | Retained by Boost Mobile / EchoStar |
| Cloud-native mobile core | Retained by EchoStar |
| Radio access network | Increasingly provided through AT&T infrastructure |
| Cell sites and radio equipment | AT&T network |
| Spectrum carrying subscriber traffic | Increasing reliance on AT&T holdings |
The revised commercial arrangement also provides additional interconnection between the two networks and changes the wholesale economics applicable to Boost traffic.
The FCC concluded that the arrangement could allow EchoStar to continue competing in the wireless retail market even as it transitions away from operating its own nationwide radio network.
A $22.65 Billion Spectrum Transaction
The original licence purchase agreement specified an aggregate cash purchase price of $22.65 billion, subject to potential adjustments.
When the transaction closed on 28 July 2026, the financial structure was split into two components:
| Closing Component | Amount |
|---|---|
| Cash proceeds paid to EchoStar | $20.25 billion |
| FCC-mandated trust funded from purchase consideration | $2.40 billion |
| Total | $22.65 billion |
AT&T commonly describes the acquisition as an approximately $23 billion transaction, while the underlying agreement and final closing amounts provide the more precise $22.65 billion figure.
FCC Approval Came with an Unusual $2.4 Billion Trust Condition
The FCC did not grant unconditional approval to the spectrum transfer.
During the regulatory proceeding, tower companies, infrastructure providers, landlords and other parties raised disputes concerning contractual obligations associated with the construction, operation and later decommissioning of EchoStar's 5G network.
The FCC did not attempt to determine the validity of those individual commercial claims. Instead, it conditioned approval of the spectrum transactions on the creation of a $2.4 billion trust intended to provide resources for qualifying obligations that are ultimately established through settlements, judgments or other applicable processes.
The fund covers potential liabilities connected with activities such as:
- network construction;
- operation and maintenance;
- communications-site leases and infrastructure;
- network decommissioning; and
- goods and services supplied in connection with the relevant communications network.
Although the FCC order permitted establishment of the trust within 30 days following consummation, the full $2.4 billion was funded directly by AT&T at the transaction closing using part of the purchase consideration.
FCC Rewrites the 600 MHz Buildout Timetable
Another major regulatory issue involved EchoStar's existing 600 MHz construction deadlines.
AT&T does not currently operate in the band and argued that simply applying the inherited deadlines would not provide enough time to integrate the frequencies into a nationwide network.
The FCC agreed to waive the existing schedule but rejected AT&T's proposed replacement as insufficiently demanding. It imposed a new set of nationwide and licence-specific rollout milestones instead.
AT&T's New 600 MHz Deployment Obligations
| Milestone | Requirement | Deadline Based on 28 July 2026 Closing |
|---|---|---|
| Nationwide interim | Reliable 600 MHz signal and service to at least 40% of the population covered by the acquired 600 MHz portfolio | 28 July 2029 |
| Nationwide final | At least 75% of the population covered by the acquired portfolio | 28 July 2031 |
| Licence-level interim | At least 40% of the population within each individual 600 MHz licence area | 28 July 2031 |
| Licence-level final | At least 75% of the population within every individual 600 MHz licence area | 28 July 2036 |
The combination of nationwide and licence-specific requirements is designed to prevent AT&T from satisfying the regulatory obligation only by concentrating deployment in major metropolitan markets.
Missed Deployment Targets Can Accelerate Deadlines
The FCC also established consequences for failure to meet the intermediate milestones.
If AT&T misses the nationwide 40% requirement after three years, the 75% nationwide deadline moves forward from the fifth anniversary to the fourth anniversary of closing.
If AT&T misses the nationwide final target, the licence-level final deadline can also be accelerated. Failure to meet an individual licence's interim target can shorten its final deadline by two years.
Ultimately, if AT&T fails to satisfy the final buildout requirement for an individual licence, that authorization can terminate automatically.
The conditions make the acquisition unusual among major spectrum transactions because the FCC effectively created a new deployment timetable specifically for the transferred portfolio.
Why the FCC Focused Closely on Low-Band Spectrum Concentration
AT&T's acquisition triggered additional regulatory scrutiny because 600 MHz belongs to the limited pool of mobile spectrum below 1 GHz.
Low-band spectrum has historically received particular attention in FCC competition analysis because its propagation characteristics can reduce the infrastructure cost of building broad geographic coverage.
After the transaction, the FCC calculated that AT&T could hold as much as 110 MHz of below-1-GHz spectrum in some markets.
The regulator therefore conducted enhanced review across hundreds of local markets before determining that the transaction was unlikely to prevent competitors from expanding their networks or materially raise rivals' costs.
AT&T's Post-Transaction Spectrum Position
| FCC Competition Metric | Maximum Post-Transaction AT&T Holding |
|---|---|
| Total suitable and available spectrum | 405 MHz |
| Below-1-GHz spectrum | 110 MHz |
| 3.45 GHz spectrum | 100 MHz |
The FCC identified ten Cellular Market Areas, representing less than 1% of the U.S. population, where AT&T would hold approximately one-third or more of the total spectrum considered suitable and available for mobile broadband.
For below-1-GHz frequencies specifically, enhanced review was triggered in 354 CMAs covering approximately 65% of the U.S. population.
After analysing competitive conditions in those areas, the Commission concluded that the overall risk of competitive harm was low.
T-Mobile Challenged Parts of the Transaction
The regulatory review was contested by several industry and public-interest participants.
T-Mobile filed a petition asking the FCC to deny the transaction or impose additional conditions. Its objections focused particularly on the proposed 600 MHz deployment timetable and whether the arrangement would ensure timely use of the spectrum in rural markets.
The Rural Wireless Association also raised concerns over deployment and spectrum concentration, while Public Knowledge and the Open Technology Institute submitted additional competition-related arguments.
The FCC ultimately rejected the request to block the transaction. It did, however, impose more demanding 600 MHz deployment obligations than AT&T itself had proposed.
The 3.45 GHz Aggregation Waiver Became Unnecessary
AT&T initially sought a waiver related to the FCC's temporary limit on 3.45 GHz spectrum concentration.
The rule had restricted an individual operator from holding more than 40 MHz of 3.45 GHz licences within a service area for a specified period following the original Auction 110.
That restriction expired on 4 January 2026, before the FCC ruled on the EchoStar transaction. The Commission therefore dismissed AT&T's waiver request as moot.
This allows AT&T's overall 3.45 GHz holdings to reach as much as 100 MHz in certain markets after the acquisition when its existing spectrum and the EchoStar licences are combined.
AT&T Can Use the Spectrum for More Than Smartphone Capacity
The additional frequencies have implications beyond conventional mobile handset traffic.
AT&T identified fixed wireless access as one of the services that could benefit from greater spectrum availability. Additional mid-band capacity can help the operator support home broadband products in locations where mobile and fixed traffic share the same radio infrastructure.
The FCC also identified benefits to other service providers that rely on AT&T's network, including wholesale and mobile virtual network operator customers.
This means the capacity gained through the transaction can indirectly affect service providers beyond AT&T's own retail subscriber base.
A Broader Reshuffling of EchoStar's Spectrum Strategy
The AT&T transaction forms part of a much larger restructuring of EchoStar's wireless spectrum portfolio.
The company spent years assembling spectrum and building an independent 5G network following the creation of Boost Mobile as a facilities-based competitor after the T-Mobile–Sprint merger.
By 2025, however, EchoStar had decided to sell major portions of its spectrum portfolio and transition its wireless business toward a hybrid network model.
The 600 MHz and 3.45 GHz sale moves approximately 50 MHz of nationwide-average terrestrial spectrum to AT&T. Separate spectrum transactions involving other EchoStar frequencies have been handled independently and are not part of FCC Order DA 26-470.
The result is a major reorganisation of spectrum originally intended to support EchoStar's standalone network into assets that will now be deployed within other communications platforms.
Transaction Timeline
| Date | Milestone |
|---|---|
| 25 August 2025 | AT&T and EchoStar sign the licence purchase agreement |
| 26 August 2025 | Transaction publicly announced |
| 18 September 2025 | AT&T and EchoStar file FCC spectrum assignment applications |
| 30 September 2025 | FCC accepts applications for filing and opens public review |
| Late 2025 | AT&T begins using portions of the 3.45 GHz spectrum under a spectrum-manager lease |
| 12 May 2026 | FCC approves the licence assignments through DA 26-470 |
| 12 May 2026 | Transaction also receives required U.S. Department of Justice regulatory clearance |
| 26 June 2026 | Required Wireless Creditor Trust established with Bank of New York Mellon as trustee |
| 28 July 2026 | AT&T and EchoStar complete the spectrum transaction |
Summary: AT&T–EchoStar Spectrum Reshuffle
| Category | Final Result |
|---|---|
| Transaction type | Private secondary-market spectrum acquisition |
| Buyer | AT&T |
| Seller | EchoStar |
| Spectrum bands | 600 MHz and 3.45 GHz |
| Approximate spectrum acquired | 50 MHz nationwide average |
| 600 MHz component | Approximately 20 MHz nationwide average; 10–40 MHz depending on market |
| 3.45 GHz component | Approximately 30 MHz nationwide average; up to 40 MHz depending on market |
| Population coverage of licence portfolio | Approximately 99% of U.S. population |
| Counties / equivalents | 3,155 |
| CMAs affected | All or parts of 720 |
| Transaction consideration | $22.65 billion |
| Cash paid directly to EchoStar | $20.25 billion |
| FCC-mandated trust | $2.4 billion |
| Additional asset | 99-year extension of specified Hawaii spectrum leases for AT&T's exclusive use |
| FCC order | DA 26-470 |
| FCC approval date | 12 May 2026 |
| Transaction completed | 28 July 2026 |
Outlook: A Different Low-Band and Mid-Band Balance for AT&T
The transaction materially changes AT&T's spectrum position by strengthening both ends of its terrestrial 5G portfolio.
The 600 MHz licences introduce a new low-band layer that can improve geographic and indoor coverage. The 3.45 GHz frequencies increase the amount of mid-band capacity available for areas where network traffic, broadband speeds and fixed wireless demand require substantially wider channels.
The deployment timelines will differ. Much of the 3.45 GHz spectrum can be integrated quickly because AT&T already operates compatible equipment, while nationwide use of 600 MHz requires a more extensive hardware programme across thousands of radio sites.
For EchoStar, the consequences are more structural. The sale transfers spectrum that was central to its original facilities-based 5G ambitions and reinforces its transition toward a hybrid MNO in which Boost Mobile continues to manage customers and core-network functions while relying much more heavily on AT&T's radio access infrastructure.
The FCC's decision also ensures that the reshuffling does not end with a licence transfer on paper. The new 600 MHz buildout milestones require progressively broader deployment through 2036, creating measurable obligations for AT&T to place the acquired frequencies into active use.
The transaction was formally completed on 28 July 2026, following FCC approval on 12 May 2026.
Full spectrum allocation details for the United States are available here: https://www.spectrum-tracker.com/United-States