Build Your Own Ham Radio Frequency Counter
Find schematics, projects, and kits for constructing frequency counters to use with your amateur radio equipment.
Accurate frequency measurement is essential for ham radio operators, whether checking a transceiver's output, aligning a homebrew VFO, or verifying the frequency of a local repeater. A reliable frequency counter helps ensure stations operate precisely on their intended bands, preventing out-of-band transmissions and optimizing performance for QSOs.
This category offers various projects for building your own frequency counter, ranging from simple, low-cost designs suitable for QRP transceivers to more advanced logging frequency counters. Hams can find schematics and construction details for modules like the 40MHz Frequency Counter Module, or kits such as the W8DIZ Frequency Counter, often integrating features like voltage measurement or logic testing. Many designs use common microcontrollers and LCD readouts, making these projects accessible for operators keen on homebrew equipment.
-
Design for a very low cost 6-digit frequency counter module using of the shelf components -
Pictures, photos, source code and plans to build a logging frequency counter -
Modification to connect a frequency counter to a MFJ-9406 50 MHz transceiver by ON6MU -
Frequency counter project. It includes quite a number of useful testing features which were very useful when building other projects -
This is an incredibly simple and cheap frequency counter with binary readout, based on the ideas of Onno PA2OHH. -
A PIC microcontroller-based frequency counter with LCD readout, designed for standalone use or integration into a receiver with offset capabilities. -
Improve the FRG-7 operation adding a home made digital frequency display. The author explains the challenges of using the analogue dial on the FRG-7 and how a digital display can be a useful solution. The page provides detailed information about the FRG-7's design and frequency conversion process. It also includes step-by-step instructions on how to connect an external frequency counter to display the kHz part of the frequency. -
This circuit will let you look at the signal and frequency output of your transceiver. -
PIC micro controller based frequency counter with LCD readout -
A tutorial on using RF frequency counter, how a digital frequency counter works, includes frequency counter specifications and best practices in setting counter accuracy and resolution -
This Frequency Counter Development Kit is fully functional with the included pre-programmed microprocessor -
homebrew a frequency counter by M1HOG -
This page by Andrew Woodfield ZL2PD provides information on CMOS HF Digital Dial for hams. It covers design options, circuit description, construction, alignment, and operation. The page also includes references and downloads. Whether you're looking to build or understand a digital dial for your HF rig, this page offers valuable insights and resources. -
This page provides an introduction to the ZL2PD LED Frequency Counter. It covers the design, construction notes, and downloads related to the project. Created by Andrew Woodfield, ZL2PD, this resource offers valuable information for hams interested in building their own frequency counter using LEDs. The content is dated June 12, 2010, with a revised version 2.0. The page also credits the template design by Andreas Viklund.