Mini-Circuits’ UFC-6000 is a small, light weight Frequency Counter operating over the frequency range 1 to 6000 MHz. The counter is cased in a rugged shielded case (size of 6.16″ X 3.68″ X 1.38″) with a 16×2 character LCD display, a reference input BNC(F) port and a signal input SMA(F) port. Using the USB interface allows remote display of measured frequencies, and eliminates the need for an additional power supply. The counter can also operate independently using an external power supply. Full software support is provided for USB control, including our user-friendly GUI application for Windows and a full API and programming instructions for both Windows and Linux environments (32-bit and 64-bit systems). The latest version of the full software package can be downloaded from https://www.minicircuits.com/softwaredownload/fc.html at any time. Longer USB cables, AC/ DC power adaptor and a mounting bracket are available as additional options – see page 5 for details.