Communications Equipment Manufacturing (NAICS 3342): An Investor's Primer

A Histometrics rollup primer for public-market and private investors. This page sits one level up from the three detailed industries beneath it. It synthesizes across those children — where the money is, which way each is growing, and who owns them — and reports this level's own ground-truth federal figures. For company-by-company detail, follow the links to each child primer.

1. Overview

NAICS (the North American Industry Classification System, the U.S. government's standard code for sorting businesses) industry group 3342 — Communications Equipment Manufacturing covers the American factories that build the physical gear that carries voice, data, and video, plus the electronic hardware that signals and alerts. It is a four-digit "industry group": a container that rolls up three narrower industries — wired networking gear (33421), wireless and broadcast gear (33422), and other signaling equipment such as fire alarms and traffic signals (33429). [1][2]

For an investor, 3342 is best understood as three very different businesses filed under one label. One child rides the artificial-intelligence and mobile-carrier spending waves; one is a durable, code-mandated safety niche; and the largest of the three straddles both defense/public-safety strength and a glaring American weakness in mass-market cellular gear. They differ in size by roughly 7-to-1, in how concentrated they are, and — most important for how you actually invest — in whether the leading companies are public, foreign-listed, or privately held. The single most useful thing this page does is lay those contrasts side by side.

2. What's inside — the three children and how they differ

The three industries share a factory-floor DNA (design-heavy electronics, thin domestic assembly, value migrating into chips and software) but sell into different worlds. The table below is the heart of this primer.

The one-paragraph read of the contrast. Wireless (33422) is this industry group — roughly four-fifths of the revenue and seven-tenths of the jobs. The other two children are similar in size to each other (~$4–5 billion apiece) but are opposites in character: wired networking (33421) is concentrated, cyclical, and levered to the AI/cloud capital-spending boom, while signaling (33429) is fragmented, defensive, and levered to building codes and infrastructure budgets. Ownership is the sharpest divide of all: 33421's value sits in U.S.- and Europe-listed design brands, 33422 forces you offshore (Ericsson, Nokia) or private (SpaceX) for the biggest exposures, and 33429 has largely been taken private. There is no single stock — and no exchange-traded fund (ETF, a fund that trades like a stock) — that cleanly captures all three.

Boundaries. Each five-digit industry here happens to contain exactly one six-digit child of the same name (33421→334210, 33422→334220, 33429→334290), so the child primers double as the detailed pages. The group excludes the semiconductors inside the gear (NAICS 334413), consumer TVs and home audio/video (334310), the installation and monitoring of alarm systems (a service, NAICS 561621), and the network operators — the phone, cable, and satellite-internet companies that run services rather than build boxes (NAICS sectors 517/516). [3][4][5] One classification wrinkle carries up from the signaling child and applies group-wide: the unit of measurement is an establishment, not a company, so a diversified manufacturer can have one plant coded here while its software, distribution, and service arms sit in other codes entirely. [5]

3. Size (this level's rollup figures)

Per our ground-truth federal reference statistics for NAICS 3342:

• Revenue (receipts): about $41.3 billion (2022 Economic Census). [1]
• Employment: 73,884 workers (2023 County Business Patterns). [1]
• Establishments: 1,138; firms: 1,062. [1]
• Annual payroll: about $9.0 billion (2023) — roughly $122,000 per worker, the fingerprint of an engineering-heavy, high-skill workforce. Networking (33421) runs richer still at about $150,000 per worker. [1][3]
• Concentration: the top 4 firms hold 40.8% of revenue, the top 8 54.7%, the top 20 67.7%, the top 50 78.8%; the Herfindahl-Hirschman Index (HHI, a standard single-number concentration gauge where under 1,500 is "unconcentrated") is 506.4. [1]

How the pieces add up — and where they don't. Revenue, employment, establishments, and payroll do reconcile: the children's $4.30B + $32.3B + $4.67B, their 8,893 + 52,536 + 12,455 workers, their 161 + 645 + 332 establishments, and their $1.34B + $6.6B + $1.06B of payroll each land on the group totals above. [1][3][4][5] The firm count is the exception — the children report 155 + 606 + 310 firms against the group's 1,062, because a company operating in more than one of the three industries is counted once at the group level and again in each child. Treat the group's 1,062 as the correct count of distinct businesses.

Concentration dilutes when you stack the children. The revised child figures sharpen a point the parent could only gesture at before: the group as a whole (HHI 506) is less concentrated than its largest child alone (33422's HHI 795), even though that child is ~78% of the group's revenue — and only 33422 publishes an HHI at all, since the measure is suppressed for both 33421 and 33429. [3][4][5] The same pattern shows in the concentration ratios: the group's top-4 share (40.8%) sits below both networking (61.9%) and wireless (52.1%), and the group's top-50 share (78.8%) is below all three children's. That is an artifact of aggregation — the biggest firms in wired networking, wireless, and signaling are mostly different companies, so pooling them dilutes any one firm's share. Concentration is real within each child; it partly washes out when you stack them.

Which federal series you use matters. The revised children surface something worth knowing before quoting any single number: the federal series do not agree with one another, and the group totals above are on a consistent Economic Census / County Business Patterns basis. For networking, a separate Census series (the Annual Integrated Economic Survey) puts 2023 firm-level sales at $3.92 billion against the Economic Census's $4.30 billion — a different year and a different statistical unit, bracketing the industry's size rather than showing a decline. [3] On employment, the Bureau of Labor Statistics counts 13,506 private-sector jobs in networking for 2024 where County Business Patterns counts 8,893, while for wireless the two are close (BLS 51,100 in March 2026 versus 52,536). [3][4] Neither basis is wrong; do not mix them into a group total.

The long employment slide. The offshoring story has a number attached to it now: domestic headcount in the networking child fell from 104,129 in 2000 to 13,506 in 2024, an 87% decline, though BLS cautions its data are not built as a strict time series. [3] That is not collapsing demand for networks — it is offshoring, outsourced assembly, automation, disappearing legacy products, reclassification, and the migration of value from hardware into software.

Undercount caveat (large here). Read $41 billion as value added inside U.S. factories coded to 3342 — not as the size of the communications-hardware economy Americans actually consume. Two structural forces push the true figure far higher. First, offshoring: the leading U.S. networking and phone brands design at home but build abroad through contract manufacturers, and the U.S. imported roughly $115 billion of telephones in 2024 alone (about $41 billion of cell phones from China), almost none of it counted here. [4][6] Second, value migration into chips and software counted in other codes: Cisco's networking-product revenue alone was about $28.3 billion in fiscal 2025, and Qualcomm booked about $38.9 billion in fiscal 2024 (filed under semiconductors) — each rivaling or exceeding the entire measured group. [3][4][7] The signaling child adds a third mechanism the parent previously understated: the service layer sits in other codes, so installation, monitoring, and recurring cloud/cellular revenue never appear here, and researchers size the U.S. fire-alarm-and-detection market alone at roughly $3.5 billion in 2025 — one sub-segment approaching the whole of 33429's measured receipts. [5] This is an offshoring/value-migration undercount, not a small-owner one: the group is dominated by sizeable manufacturers and diversified industrials, not individually owned micro-operators, so the counted receipts are reliable as far as they go — they simply capture a thin domestic slice of a much larger sector.

4. Investable universe (where value concentrates across the children)

Because the group is really three markets, the investable map is three maps — and each concentrates value differently:

• Wired networking (33421) concentrates value at the design-and-brand end, where the dominant operating model is fabless OEM: vendors do architecture, silicon, software, and support, and hand the soldering to contractors. The revised child roster runs about ten listed names in four tiers — the diversified leader (Cisco), the AI-data-center growth play (Arista), optical and carrier vendors (Ciena, plus Nokia and Ericsson as American Depositary Receipts), broadband-access and enterprise small caps (Calix, Adtran, Extreme Networks, NETGEAR, Aviat), and HPE as the new owner of Juniper — alongside the electronics-manufacturing-services (EMS) contractors that do the building (Jabil, Flex, Celestica, Sanmina) and privately held Foxconn. [3][9]
• Wireless (33422) is the frustrating one: no U.S. company leads mass-market cellular base stations (the top five radio-access-network suppliers — Huawei, Ericsson, Nokia, ZTE, Samsung — hold roughly 94–96% depending on the period measured, none American). [4] The shape is one large franchise and a long cyclical tail: Motorola Solutions, at roughly $11.7 billion of 2025 revenue, is the clearest single public exposure through public-safety land-mobile radio; [4][8] the specialists below it run from about $4.5 billion (Viasat) down to under $0.2 billion (Cambium) and include CommScope, Ubiquiti, Comtech, Harmonic, Aviat, BK Technologies, and Airgain. [4] Core-network exposure means foreign-listed Ericsson/Nokia; the chip value sits in Qualcomm; defense communications runs through L3Harris, whose communications segment alone was about $5.5 billion in 2024; and the fastest-growing corner — low-Earth-orbit (LEO) satellite terminals — is dominated by privately held SpaceX (Starlink), building dishes at Bastrop, Texas. [4]
• Signaling (33429) still has no large clean pure-play, but the revised child widens the listed set to three focused manufacturers rather than two: NAPCO Security Technologies (~$182 million in FY2025), Daktronics (~$839 million in FY2026), and Federal Signal's Safety & Security segment (~$343 million in 2025, less than half that company's consolidated revenue). [5][10][11][12] Above them sit diversified industrials — Honeywell, Johnson Controls, Siemens — where this gear is one slice of a giant company; Honeywell's Building Automation segment booked roughly $7.4 billion of 2025 sales, more than the entire federal receipts figure for the industry. [5] Most of the remaining field (Kidde Global Solutions, Spectrum Safety Solutions, Econolite, Aiphone, Mircom, Cubic, Iteris) is private- or foreign-owned, and the census data show 294 of 310 firms (94.84%) below the SBA's 800-employee small-business threshold. [5]

The through-line is unchanged and, if anything, starker: the biggest single exposures in the biggest child are the hardest to buy (foreign-listed or private), while the most investable public names cluster in the two smaller children. Tickers, scale figures, and full company tables live in each child primer.

5. How the money works

Across all three children this behaves less like commodity manufacturing and more like design-and-systems businesses that ship hardware — but the economics fan out, and the revised children make clear that the spread is as wide inside a single industry as it is between them:

• Gross margin tracks how much intellectual property and software ride on the box. The reported range across the group runs from about 27% to about 64%. At the top, Cisco earned a 63.7% product gross margin in fiscal 2025 on custom silicon and software; [3][7] Motorola Solutions runs near 52% gross and 26% operating because its radios come bundled with sticky software and services (38% of 2025 revenue); [4][8] a code-certified fire/security maker like NAPCO runs ~55.6%. [5] In the middle, optical-transport vendor Ciena reported 42.0%, Federal Signal's Safety & Security segment 42.8% gross and 23.8% operating, and Ubiquiti 43%. [3][4][5][12] At the bottom, scoreboard maker Daktronics runs ~27.3% gross and 7.3% operating, competing on price for big one-off projects, and Viasat's product-only gross margin was about 28%. [4][5][11] The most cautionary case is carrier radio gear, where a respectable gross margin survives research spending barely at all: Nokia's Mobile Networks segment reported a 37% gross margin but only 2.8% operating margin, with R&D absorbing 27% of segment sales. [4] The EMS contractors sit lower still, earning thin margins on volume and execution. [3]
• Recurring revenue is the prize. The strategic template everywhere is converting one-time equipment sales into subscription and service revenue — NAPCO's cellular-monitoring line reached $86.3 million in fiscal 2025 (48% of revenue at ~91% gross margin), the razor-and-blades model of the sector. [5]
• The leading indicators are order backlog and book-to-bill, and — for anything sold to carriers — the customer capital-expenditure (capex, meaning spending on long-lived equipment) cycle. Backlog scale is itself a good map of the group: Motorola carries roughly $14 billion, several years of visibility, against Daktronics's $356.2 million of product backlog and Federal Signal's $76.6 million in the relevant segment on 2025 orders of $363.7 million. [4][5][8][11] Signaling adds code-driven replacement demand that stabilizes the base, but its input costs are visible too — the producer-price index for that code rose from 122.7 in February 2021 to 159.2 in June 2025. [5] Customer concentration cuts the other way in networking: Ciena's five largest customers supplied 49.7% of fiscal-2025 revenue, one cloud customer alone 17.9%. [3]
• The scarce input is engineering, not floor space. About 40% of Motorola's roughly 23,000 employees work in R&D and engineering — the group's ~$122,000 average payroll per worker is what that looks like in the federal data. [1][4]

6. Demand drivers

The group's demand is the union of its children's, and the drivers pull in partly independent directions — which is why 3342 as a whole is steadier than any one child:

• AI and cloud data-center buildout — high-speed switching and optical links (drives 33421). [3]
• Wireless carrier network cycles — 5G, the 5G-Advanced upgrade, and eventually 6G. U.S. providers invested about $29 billion in networks in 2024 and served 579 million connections including 259 million 5G devices — but traffic growth does not translate one-for-one into equipment revenue, since software upgrades and spectrum efficiency absorb load without proportional hardware spending (drives 33422). [4]
• Defense, public safety, and satellite — tactical military radios, P25 first-responder systems (North American public-safety land-mobile radio was about $2.2 billion in 2024, roughly 86% of it U.S.), next-generation 911, and the LEO ground-terminal boom. These are funded by multi-year appropriations rather than carrier budgets, and are the group's principal counter-cycle (drives 33422). [4]
• Building construction, renovation, and fire/life-safety codes — nonresidential construction is the single biggest swing factor, with NFPA 72 (the National Fire Alarm and Signaling Code) and school-safety mandates such as Alyssa's Law, now enacted in a growing list of states, forcing upgrades (drives 33429). [5]
• Public infrastructure and broadband subsidies — traffic/ITS (intelligent-transportation-system) budgets, and the $42.45 billion Broadband Equity, Access, and Deployment (BEAD) federal program funding fiber (drives 33421 and 33429). [3][5] Both wireline and wireless children now carry the same caveat: BEAD money reaches equipment makers indirectly and late, since only part of each project dollar buys active gear and state selection, permitting, and construction schedules set the order timing. [3][4]
• Live events and commercial signage — stadium, arena, and retail investment drives the large-display end of signaling on a cycle that moves independently of the fire and traffic ends (drives 33429). [5]
• Consumer device replacement — huge dollar volumes, but overwhelmingly filled by overseas factories, so it largely bypasses U.S. plants. [4][6]

Working against all of this in the wireline child is a secular decline in the legacy tail: smartphones displace wire and cordless phones, unified-communications software displaces premises PBXs, and merchant silicon and white-box switches can shift value from chassis vendors to chip and software suppliers. [3]

7. Regulation

Regulation is a competitive moat as much as a cost across the group, though the specific regime differs by child:

• Spectrum and equipment authorization. The Federal Communications Commission (FCC) allocates and auctions spectrum (creating wireless demand) and must certify most gear before sale; connected signaling devices fall under the same equipment rules. [3][4][5]
• Security "Covered List" and "rip and replace." The FCC's December 2025 Covered List continues to bar specified Huawei and ZTE telecommunications equipment and services, alongside gear from Hytera, Hikvision, and others. [3][4] The associated reimbursement program — funded with roughly $1.9 billion initially and topped up by a $3.08 billion Treasury loan in December 2024, for about $5 billion total — pays carriers to tear out and replace banned gear, a direct order tailwind for approved vendors in 33421 and 33422. Execution has been slow: only about 42% of projects were finished by mid-2026, so the tailwind is real but arriving later than the appropriation implies. [4]
• Domestic-content and trade rules. Build America, Buy America (BABA) preferences attach to federally funded projects, and the children now give the specifics: Commerce's BEAD waiver addresses optical line terminals and requires certain manufacturing steps to happen domestically for covered equipment to qualify, [3] while on the highway side, federal-aid projects obligated on or after October 1, 2025 require U.S. final assembly of covered manufactured products, and those obligated on or after October 1, 2026 require U.S.-produced components to exceed 55% of component cost. [5] Section 301 tariffs and the Section 232 semiconductor action — a 25% duty on certain advanced chips effective January 2026 — raise the cost of gear assembled abroad, a real edge for U.S. makers and a real input-cost risk for everyone. [3][4][5]
• Mandatory product certification. Fire-alarm panels must be listed to UL 864 and installed to NFPA 72 — whose 2025 edition adds a dedicated cybersecurity chapter, reflecting the shift to connected systems; traffic devices must conform to the Federal Highway Administration's MUTCD, now in its 11th Edition with Revision 1, and to NEMA interoperability standards. These certifications lock out non-compliant competitors in 33429. [5]
• Technical standards and export controls. 3GPP, the O-RAN Alliance, and P25 shape what is sellable in wireless, while export controls constrain where it can be sold. [3][4]

8. Consolidation

All three children are consolidating, but by different mechanisms:

• Wired networking (33421): large strategic M&A — HPE's $13.6 billion acquisition of Juniper Networks (closed July 2025), which roughly doubled HPE's networking business and created a stronger number-two challenger to Cisco, and Nokia's ~$2.3 billion purchase of Infinera (February 2025), which made Nokia the world's second-largest optical-networking vendor — against a backdrop of merchant silicon and "white-box" hardware pressure and the shutout of Chinese vendors, which hands domestic share to Western suppliers while closing the Chinese market to them. [3][9]
• Wireless (33422): roll-ups within niches (CommScope absorbing Arris and Ruckus; Motorola's serial software acquisitions, with deal leverage a live risk), while Open RAN — the effort to break the vertically integrated radio-access network into interchangeable multi-vendor parts — is the most-watched disruptive force. AT&T committed to buy up to $14 billion of U.S.-built Ericsson equipment over five years and Verizon has deployed over 130,000 Open-RAN-ready radios, but whether that opens the market to challengers or simply hands share to the incumbents building the "open" boxes is unresolved — so far, challengers have captured little. [4]
• Signaling (33429): private equity sets the pace, and the revised child shows Carrier's 2024 restructuring was a three-way breakup, not two: its access business to Honeywell (~$5.0 billion), its commercial and residential fire business to Lone Star Funds ($3 billion, forming the private Kidde Global Solutions), and its industrial fire business to Sentinel Capital Partners ($1.425 billion, forming Spectrum Safety Solutions). In traffic/ITS, Cubic (Veritas Capital, 2021) and Iteris (Almaviva, ~$335 million, October 2024) were both taken private. Fire alarm is the concentrated end — Honeywell, Johnson Controls, Siemens, and formerly Carrier command a majority of the U.S. market — while intercoms stay fragmented and largely private or foreign-owned. [5]

The net effect for public investors: the listed opportunity set in this group is narrow and, in signaling, actively shrinking as private capital consolidates the field — which raises the scarcity value of the few remaining pure-play stocks.

9. Risks

The group's risks are its children's, and they partly offset (defensive signaling cushions cyclical networking) — but the shared exposures are real:

• Cyclicality — wired and wireless gear swing with customer capital budgets; the 2023–24 inventory correction and post-5G "digestion" cut global RAN sales roughly 22% from 2022 to 2024 and knocked about 22% off Cambium's 2024 sales, and the networking cycle is unusually inventory-sensitive because vendors buy long-lead components against forecasts. [3][4]
• Offshoring and value migration — the highest-volume, highest-value activity happens abroad or in chip/software codes, permanently capping domestic manufacturing economics. [4][6]
• China, tariffs, and supply chain — over 40% of U.S. telecom gear is sourced directly or indirectly from Chinese manufacturers, input risk concentrates in semiconductors and specialized RF parts (some single-sourced), and 2025 tariffs plus the January 2026 Section 232 chip duty pressure margins and force re-sourcing toward Vietnam, Mexico, and elsewhere. [3][4][5]
• Customer and program concentration — a few carriers, cloud hyperscalers, and government buyers drive demand; one optical vendor's top five customers were nearly half its revenue, and public-safety and traffic demand depends on legislatures, DOT funding, and slow-moving federal programs. [3][4][5]
• No U.S. macro-RAN presence — in the largest child, American firms are relegated to niches and U.S. carriers depend on foreign suppliers for core network gear. [4]
• Technology disruption and cybersecurity — merchant silicon, software-defined networking, Open RAN, and the shift to IP/cloud/AI-enabled systems can obsolete a product line and add cyber liability on connected devices. [3][4][5]
• Certification dependency — in signaling, a product that fails to keep pace with UL/NFPA/MUTCD revisions can be locked out; re-listing is costly and life-safety failures carry unusually high liability. [5]
• Project and subsidy lumpiness — big display and traffic projects, competitive-bid custom work, and BEAD timing make quarters uneven. [3][5]
• Engineering-talent competition — the binding constraint across the group is software, cloud, and AI skill, not factory headcount. [4]

10. How to invest & outlook

There is no single ETF or stock for NAICS 3342 — and none of the three children has a dedicated fund of its own either, so you assemble exposure across them and the practical route depends on which one you want.

• Public-market investors get the deepest, cleanest choices in the two smaller children: Cisco (diversified networking), Arista (AI-data-center growth), Ciena (optical), HPE (the Juniper franchise), and the broadband-access and enterprise small caps (Calix, Adtran, Extreme, NETGEAR, Aviat) in 33421, plus the EMS contractors (Jabil, Flex, Celestica, Sanmina) as the closest fit to the literal "manufacturing" label; Motorola Solutions and the niche specialists (CommScope, Ubiquiti, Viasat, Comtech, Harmonic, Aviat, Cambium, BK Technologies, Airgain) plus Qualcomm and L3Harris for 33422; and, in 33429, NAPCO, Daktronics, and Federal Signal — the last diluted by the fact that the relevant segment is under half the company — or diversified Honeywell/Johnson Controls. [3][4][5][10][11][12] The biggest wireless exposures require going foreign-listed — Ericsson/Nokia as American Depositary Receipts (ADRs, foreign shares traded in U.S. markets). Broad exposure comes only through diversified communications-equipment, 5G/connectivity-thematic, or aerospace-and-defense funds.
• Private-market investors reach the parts public markets can't: SpaceX (Starlink) LEO terminals — the fastest-growing corner of the whole group; Open RAN software (e.g., Mavenir) and private-5G/small-cell startups; antenna/RF specialists; venture and private-equity capital in networking software and optical components; the U.S. contract plants being stood up for domestic-content rules; and the code-protected, recurring-revenue safety and traffic assets that private equity has been rolling up (Kidde, Spectrum Safety Solutions, Cubic, Iteris). [3][4][5]

Outlook. The three children are unlikely to move together, which is the group's defining feature. Wired networking should stay elevated on the AI data-center buildout into 2026 and beyond, with carrier spending recovering off a soft 2023–24 and BEAD-funded fiber ramping through 2026–2028; wireless is recovering off the 2023–2024 RAN trough with a genuine growth engine in LEO terminals, steady defense and public-safety budgets, and restarted spectrum auctions funding rip-and-replace, but a persistent structural gap in mass-market cellular; and signaling offers a durable, mandate-backed base that grows with construction, safety codes, and Buy-America infrastructure spending, offset by tariff-driven input costs and a listed set that keeps shrinking. Across all three, the bulk of physical manufacturing stays offshore and the value keeps migrating into chips, software, and services counted in other codes — so the federal 3342 statistics will keep understating a sector whose real center of gravity is U.S. design, intellectual property, and recurring revenue. For the full analysis of any one market, read the child primers: 33421, 33422, and 33429.

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Sources

Level figures (§3) are from our ground-truth federal reference statistics for NAICS 3342 [1]. All other citations are drawn from the three child primers; the most load-bearing company figures are additionally linked to their primary filings.

1. U.S. Census Bureau, 2022 Economic Census — Industry Statistics & Concentration, and 2023 County Business Patterns, NAICS 3342 (receipts, firms, CR4/CR8/CR20/CR50, HHI; establishments, employment, payroll). Histometrics federal reference statistics. https://www.census.gov/programs-surveys/economic-census.html | https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau, 2022 NAICS Definition — 3342 Communications Equipment Manufacturing. https://www.census.gov/naics/
3. Histometrics, Telephone Apparatus Manufacturing (NAICS 33421) primer — and its sources, including the U.S. Census 334210 definition, 2022 Economic Census (receipts $4.30B, 155 firms, CR4 61.9%, HHI suppressed), Annual Integrated Economic Survey 2023 ($3.92B), County Business Patterns 2023 (161 establishments, 8,893 employees, $1.34B payroll), BLS employment 2000–2024 (104,129 → 13,506), SBA size standards, Ciena FY2025 10-K (42.0% gross margin, top-5 customers 49.7%), IBISWorld, NTIA BEAD ($42.45B) and the BEAD restructuring notice, Commerce BABA guidance, FCC Covered List (December 2025) and reimbursement program, PwC on Section 232 semiconductor tariffs, and the Nokia–Infinera closing announcement. /primers-preview/33421
4. Histometrics, Radio, TV Broadcasting & Wireless Communications Equipment Manufacturing (NAICS 33422) primer — and its sources, including the U.S. Census 334220 definition, 2022 Economic Census (receipts $32.3B, 606 firms, CR4 52.1%, HHI 795), County Business Patterns 2023 (645 establishments, 52,536 employees, $6.6B payroll), BLS payroll employment (51,100, March 2026), SBA size standards, Dell'Oro/Fierce Network RAN share (top-5 ≈ 94–96%), Omdia/Light Reading global RAN ($45B 2022 → $35B 2024), Qualcomm FY2024 (~$38.9B), Viasat, Ubiquiti, Nokia and Cambium filings, L3Harris 2024 annual report, CTIA 2025 survey ($29B capex), The Insight Partners LMR market, FCC Covered List and rip-and-replace funding/progress, Ericsson–AT&T and Verizon Open RAN announcements, and Starlink terminal manufacturing. /primers-preview/33422
5. Histometrics, Other Communications Equipment Manufacturing (NAICS 33429) primer — and its sources, including the U.S. Census 334290 definition, 2022 Economic Census (receipts $4.67B, 310 firms, CR4 22.5%, HHI suppressed), County Business Patterns 2023 (332 establishments, 12,455 employees, $1.06B payroll), SBA size standards, FCC small-business analysis (294 firms / 94.84%), P&S Intelligence and IBISWorld fire-alarm market sizing (~$3.5B, 2025), NAPCO FY2025 results, Daktronics FY2026 10-K, Federal Signal 2025 10-K, Honeywell 4Q25 results, BLS producer-price index for 334290, Security Industry Association on Alyssa's Law, NFPA 72 (2025 edition), UL 864, FHWA MUTCD 11th Edition and Buy America updates, and the Carrier/Honeywell, Lone Star–Kidde, Sentinel–Spectrum, Veritas–Cubic and Almaviva–Iteris transactions. /primers-preview/33429
6. Forbes (Ken Roberts), After Two Decades, China No Longer Dominates U.S. Cell Phone Imports (U.S. telephone imports ~$115B in 2024), 2026. https://www.forbes.com/sites/kenroberts/2026/03/31/after-two-decades-china-no-longer-dominates-us-cell-phone-imports/
7. U.S. Securities and Exchange Commission, Cisco Systems, Inc. Form 10-K (FY2025) (~$28.3B networking revenue; 63.7% product gross margin), 2025. https://www.sec.gov/Archives/edgar/data/858877/000085887725000111/csco-20250726.htm
8. Motorola Solutions, 2025 Form 10-K (revenue ~$11.7B, ~52% gross and ~26% operating margin, software/services mix, employees, R&D, component sourcing), 2026. https://www.sec.gov/Archives/edgar/data/68505/000006850526000010/msi-20251231.htm
9. U.S. Securities and Exchange Commission, Hewlett Packard Enterprise Form 10-K (FY2025) ($13.6B Juniper Networks acquisition, closed July 2025), 2025. https://www.sec.gov/Archives/edgar/data/1645590/000164559025000130/hpe-20251031.htm
10. NAPCO Security Technologies, Inc., Reports Fiscal Q4 and Full Year 2025 Results (revenue ~$182M, ~55.6% gross margin, recurring revenue $86.3M at ~91% gross margin), PR Newswire, 2025. https://www.prnewswire.com/news-releases/napco-security-technologies-inc-reports-fiscal-q4-and-full-year-2025-results-302537171.html
11. Daktronics, Inc., Form 10-K Fiscal Year 2026 (revenue ~$839M, 27.3% gross and 7.3% operating margin, $356.2M product backlog), 2026. https://www.sec.gov/Archives/edgar/data/915779/000162828026045262/dakt-20260502.htm
12. Federal Signal Corporation, Form 10-K 2025 (Safety & Security segment revenue ~$343M, 42.8% gross and 23.8% operating margin, $76.6M backlog on $363.7M of orders), 2026. https://www.sec.gov/Archives/edgar/data/277509/000162828026011576/fss-20251231.htm