Frequency Counter (220-0305) Features Faxback Doc. # 8656 The Radio Shack LCD RF Frequency Counter is a microcomputer-based instrument that accurately measures radio frequency (RF) signals. It is ideal for measuring ham or CB radio frequencies. Your counter can measure RF signals within a range of 1 to 1300 MHz (1.3 GHz). The counter can display RF signals with different resolutions and update rates. Your counter also includes these features. Selectable Measurement Update Settings - Let you choose a fast setting for quick measurement updates or a slow setting for maximum resolution. Selectable Input Impedance - Lets you select a 50 ohms or high input impedance. Selectable Input Frequency Range - Lets you select an input frequency range between 1 and 50 MHz or between 50 MHz and 1.3 GHz. BNC Connector - Lets you connect the supplied antenna to measure through-air RF signals, or a cable with a male BNC connector (not supplied) for direct frequency measurements. Backlight - Makes the display easy to see in low-light conditions. (LB/all-07/12/94)