CBRS SAS Providers and Private Network Services

CBRS SAS and private network services

Every CBRS (Citizens Broadband Radio Service) radio must register with a Spectrum Access System (SAS), an FCC-approved service that authorizes its channels and maximum power and can order it to stop or move^[1]^[2]. Around the SAS sit related services: domain proxies that talk to the SAS for many radios, Certified Professional Installers (CPIs) who certify installation data, and managed services that design, install and run a network for you^[3]^[4]^[5]. For the current list of SAS administrators and Google's planned shutdown, see our CBRS SAS administrators guide.

6 products from 5 vendorsUpdated Oct 1, 202613 sources

What to compare

SAS provider continuity

SAS administrators can leave the market. Google stopped taking new SAS customers in June 2026 and plans to shut its SAS down on June 10, 2027, and says it is helping customers migrate to other providers^[6]. Ask any provider how it would support a migration if it exited.

Radio integration

Your radios, or your domain proxy, must already work with the SAS. Federated Wireless, for example, advertises integration with an extensive equipment-maker ecosystem and onboarding support for vendor-specific configurations^[7]. Ask about your radio models by name.

Pricing and deregistration

Ask how the SAS charges and how you stop paying for radios you retire. Federated Wireless offers a deregistration API that it says brings SAS cost management into customer workflows^[7]. The SAS administrators guide covers what providers publish about pricing.

CPI and compliance support

Category B radios must be professionally installed, which means a CPI certifies their installation data^[8]^[4]. Federated Wireless keeps a CPI history for audits and lets unchanged devices register even when the CPI's credentials have expired^[7]. Under the Wireless Innovation Forum standard, a CPI certification lasts five years^[4].

Scope of a managed service

Managed offerings range from full design, installation and operation, such as Betacom's 5G as a Service, to platforms that manage devices and SIMs across networks, such as Kajeet's Sentinel^[5]^[9]. Get the split of responsibilities in writing: who holds the SAS account, who owns the SIMs and who answers alarms.

What services are in this category?

CBRS and private network services, with examples from our directory
Service	What it does	Example
SAS subscription	Registers each radio, sets the channels and maximum power it may use at its location, and protects incumbent users and Priority Access License holders^[10]	Federated Wireless CBRS Spectrum Controller, which adds analytics and APIs^[7]
Domain proxy	Communicates with the SAS on behalf of multiple radios or networks of radios^[3]	Sercomm UDM-DP, which handles registration, spectrum inquiry, grants, heartbeats, relinquishment and deregistration^[11]
Professional installation (CPI)	Certifies the installation parameters reported to the SAS; the CPI is personally responsible for them^[4]	Installers and integrators; every Category B radio needs professional installation^[8]
Managed or turnkey private network	A provider designs and deploys the network, and often operates it	Betacom 5G as a Service^[5]; Boingo Wireless private 5G networks for enterprises^[12]
Device and SIM management platform	Manages devices, SIMs and network performance across private, neutral-host and hybrid networks	Kajeet Sentinel. Kajeet says its private wireless deployment business is now part of Heddian, which since September 1, 2026 has been its primary partner for design, deployment and support^[9]

Listed by service type; inclusion is not a recommendation.

How does the SAS relationship work day to day?

Under the Wireless Innovation Forum's SAS–CBSD protocol, a radio (CBSD, or Citizens Broadband Radio Service Device) or its domain proxy registers with the SAS, asks which spectrum is available, requests a grant to transmit with specific parameters, and keeps that grant alive with regular heartbeat messages. It can relinquish grants and deregister when the radio is retired^[3]. If the SAS tells a radio to stop, change channel or reduce power, the radio must comply within 60 seconds^[1].

Which administrators are operating, how they differ and how to move between them is covered in our CBRS SAS administrators guide. For the radios themselves, see CBRS radios and small cells; for packaged systems, see complete networks. Our CBRS map shows planning context such as protection areas and Priority Access Licenses, but only a SAS authorizes a radio.

Common questions

Do I need a SAS for private LTE or 5G on CBRS?

Yes. Every CBRS radio must register with and be authorized by a SAS before its first transmission^[1]. Phones, routers and other end user devices do not register themselves; they operate under the control of a registered radio^[10].

What is a domain proxy, and do I need one?

A domain proxy communicates with the SAS on behalf of multiple radios^[3]. Sercomm says its domain proxy is aimed mainly at larger deployments^[11], and some complete systems include one; Ericsson, for example, builds a domain proxy into its Private 5G controller^[13].

What happens to my network if my SAS provider exits?

You must move your radios to another SAS before the provider shuts down. Google, for example, stopped taking new SAS customers in June 2026 and plans to shut down on June 10, 2027^[6]. Our SAS administrators guide includes a migration checklist.

What does a Certified Professional Installer do?

A CPI certifies the installation parameters a radio reports to the SAS and is personally responsible for their accuracy; the CPI does not have to mount the equipment^[4]. Category B radios must be professionally installed and must also report antenna gain, beamwidth, azimuth, downtilt and height^[8].

How is a managed private network different from a network in a box?

A managed service adds people: Betacom, for example, designs, installs and operates its customers' networks^[5]. A network in a box gives you preconfigured equipment to install and run yourself or with a partner. See complete networks, and how equipment, supported networks and turnkey projects differ.

Sources

47 CFR 96.39: Citizens Broadband Radio Service Device (CBSD) general requirements — Electronic Code of Federal Regulations (eCFR), Sep 30, 2026. Accessed Oct 1, 2026.
3.5 GHz Band Overview — Federal Communications Commission, Apr 3, 2023. Accessed Oct 1, 2026.
Signaling Protocols and Procedures for CBRS: SAS–CBSD Interface Technical Specification (WINNF-TS-0016, V1.2.7) — Wireless Innovation Forum, Mar 21, 2022. Accessed Oct 1, 2026.
CBRS Certified Professional Installer Accreditation Technical Specification (WINNF-TS-0247, V1.7.0) — Wireless Innovation Forum, Apr 19, 2024. Accessed Oct 1, 2026.
Betacom 5G as a Service (5GaaS) private wireless — Betacom. Accessed Oct 1, 2026.
Google Exiting CBRS Spectrum Management — Broadband Breakfast, Jun 12, 2026. Accessed Oct 1, 2026.
CBRS Spectrum Controller: High-Availability SAS — Federated Wireless. Accessed Oct 1, 2026.
47 CFR 96.45: Additional requirements for Category B CBSDs — Electronic Code of Federal Regulations (eCFR), Sep 30, 2026. Accessed Oct 1, 2026.
Private Wireless Networks (Sentinel for private wireless and neutral host networks) — Kajeet. Accessed Oct 1, 2026.
47 CFR Part 96: Citizens Broadband Radio Service (definitions in §96.3, SAS functions in §96.53) — Electronic Code of Federal Regulations (eCFR), Sep 30, 2026. Accessed Oct 1, 2026.
UDM-DP CBRS domain proxy — Sercomm. Accessed Oct 1, 2026.
Private 5G cellular network solutions for enterprises — Boingo Wireless. Accessed Oct 1, 2026.
Ericsson Private 5G — Ericsson. Accessed Oct 1, 2026.

Product facts on this page come from each product’s record and its cited sources.