Nine Fives

Nine Fives LLC is a manufacturer specializing in next-generation RF test equipment. Founded in 2025 and backed by Y Combinator, the company focuses on creating ethernet-enabled variable attenuators, RF switches, and power meters. Their products are designed to be simple, driverless, and networked, catering to the needs of engineers looking for efficient testing solutions in RF hardware design and system testing.

The core functionality of Nine Fives' equipment allows for painless rack configuration through modular rack-mount chassis that integrate with their proprietary NineVue software. This…