Frequency Counter 50Mhz

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DL4YHF Frequency Counter  1HZ 50 MHZ RED

BUILT AND TESTED READY TO USE

Frequency counter with a PIC
and minimum hardware

by Wolfgang “Wolf” Büscher, DL4YHF

Frequency range 1 Hz … 50 MHz (prototype worked up to 60 MHz but this exceeds the PIC’s timing specifications)

• Five  digits resolution

• Automatic range switching with different gate times

• Optional addition or subtraction of a frequency offset(programmable)

• Very low component count: a PIC 16F628,

  4 or 5 7-segment LED displays,

  a 4- or 20-MHz crystal and a few resistors,

• Inbuilt pre amplifier.