Frequency range 2 to 2000 MHz: This RF noise signal generator covers a wide spectrum of RF testing applications, supporting diverse measurement needs across common bands. Reliable flatness: flatness across the frequency range provides a consistent signal output, enabling precise spectrum tracking and repeatable results. Shielded box design: Integrated shielded box minimizes external interference and preserves measurement integrity in demanding environments. Direct measurement capabilities: Enables direct measurement of S21 parameters for passive devices. Suitable for both hobbyists and professionals. Use scenarios: Laboratory development and verification of RF components (filters, cables, attenuators) across 2–2000 MHz. Characterization of passive devices by measuring S21 to assess insertion loss and reflections. Education and hobbyist projects to learn RF measurement fundamentals and validate RF networks. Compatibility and performance notes: Designed for reliable use by both hobbyists and professionals, with a shielded design and flat response to support accurate measurements across the specified frequency range.