An ATtiny10 DVM and DFM all-in-one with an i2c LCD display and a minimum of other ... being able to be driven by an external clock. The frequency to be measured drives the timer, and the time ...
The friend’s radio didn’t come with a frequency display, and buying the add-on would cost more than the radio did. So [Todd] has set out to build an Arduino frequency counter for a Kenwood TS ...