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Startup · United States

Nine Fives

HQ San FranciscoFounded 20251-10 employees

Nine Fives LLC is a manufacturer of next-generation RF Test Equipment. Founded in 2025 - Nine Fives specializes in ethernet-enabled variable attenuators, RF switches, and power meters.

Startup
Website
Total raised
~$500K
1 round
Last round
~$500K
Pre-Seed · 2026
Systems
4

Funding1 round · ~$500K

Equity raised
~$500K
Latest
~$500KPre-Seed · 2026

Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.

Systems4

PD8X

A power‑over‑ethernet enabled backplane and network switch for rack‑mounted RF test modules.

Maturity not rated

POE-ATTEN-6G

An Ethernet‑controlled programmable RF attenuator for receiver testing and automated benches.

Maturity not rated

POE-SP4T-6G

An Ethernet‑controlled single‑pole, four‑throw RF switch for selecting among four test paths.

Maturity not rated

POE-SPDT-6G

An Ethernet‑controlled single‑pole, double‑throw RF switch for selecting between two test paths.

Maturity not rated

Newest unveiled first. Open a system for its milestone timeline, components and sources.

People2

All 2 people →

Hiring Observations2 observed listings

A sample of observed listings, not a total vacancy count. Availability may have changed since collection. Categories are inferred from job titles.

Sources11

Show all 11 sources and supporting evidence

Profile3

  1. 1
    CompanyNine Fives

    Nine Fives · Supports Organization · description, Organization · name, Organization · website

    “Nine Fives LLC is a manufacturer of next-generation RF Test Equipment. Founded in 2025 - Nine Fives specializes in ethernet-enabled variable attenuators, RF switches, and power meters.”
  2. 2
    DatabaseNine Fives - PitchBook company profile

    PitchBook · Supports Organization · employee range, Organization · founded year, Organization · linkedin url

    “employee_range: 1-10 (profile: 2)”
  3. 3
    DatabaseSixth-Domain public startups directory

    Sixth-Domain · Supports Organization · country, Organization · kind

    “{"country": "USA", "hq_iso2": "US", "id": "3a9004f7-fabf-4e29-bef5-013ebdc6c351"}”

Systems4

  1. 4
    CompanyPD8X

    Nine Fives · Supports System

    “The PD8X is a power-over-ethernet enabled backplane and network switch.”
  2. 5
    CompanyEthernet Programmable RF Attenuator | POE-ATTEN-6G

    Nine Fives · Supports System

    “The **POE-ATTEN-6G** is a single-channel, Ethernet-controlled programmable RF attenuator for receiver testing, signal-level sweeps, and automated laboratory benches.”
  3. 6
    CompanyEthernet SP4T RF Switch, 100 kHz–6 GHz | POE-SP4T-6G

    Nine Fives · Supports System

    “The **POE-SP4T-6G** is an Ethernet-controlled **single-pole, four-throw RF switch** for selecting between four test paths over **100 kHz–6 GHz**.”
  4. 7
    CompanyEthernet SPDT RF Switch, 100 kHz–6 GHz | POE-SPDT-6G

    Nine Fives · Supports System

    “The **POE-SPDT-6G** is an Ethernet-controlled **single-pole, double-throw RF switch** for selecting between two test paths over **100 kHz–6 GHz**.”

Funding2

  1. 8
    DatabaseNine Fives - Crunchbase company profile

    Crunchbase · Supports Funding round, Organization · ownership

    “Funding Type Pre-Seed”
  2. 9
    CompanyNine Fives: RF test equipment for next-gen spacecraft, drones, and cellphones

    Y Combinator · Supports Funding round

    “Batch:Spring 2026”

People1

  1. 10
    DatabaseNine Fives - Crunchbase company profile

    Crunchbase · Supports Organization · employee range, Organization · hq city, Organization · linkedin url, Role

    “employee_range: 1-10 (profile: 1-10)”

Other1

  1. 11
    CompanyNine Fives public job board

    Supports Job posting

    “Founding Electrical Engineer”

Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.