This is a good working Radio Shack Frequency counter. I have two so I am selling one. $35.00 shipped conus Paypal, check, MO.
•Selectable measurement update settings, input impedance, & input frequency range
•BNC connector for antenna (supplied) or coax cable
•Backlit display with data hold
•Frequency range: 1 Hz to 1300 MHz
•Copy of manual