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'Kettu Multi' universal ARDF controller

Kettu Multi Logo The 'Kettu Multi' is an AVR microcontroller-based universal ARDF controller system. ARDF stands for Amateur Radio Direction Finding, also called 'fox hunting' (think of geocaching with radios if your are not familiar with amateur radio).

This page contains all information about the free software/firmware and the typical configuration of the electronics. This page does not contain information about transmitters itself, only information how to interface with them.

Features

Contact

The Kettu Multi software is a project by Ivo PA1IVO, with electronics support by Leo PA0LEZ. You can send your questions about the Kettu Multi project to ivo [atsign] digiterraan.nl.

Instruction Manual

Download the Instruction Manual version 1.2. The instruction manual contains

Firmware Update

The software in the Kettu Multi is called the firmware. When a new version of the firmware becomes available, the Kettu Multi can be updated with the free Windows KettuMultiUpdater PC software. Read chapter 15 of the instruction manual for details.

Configuration files

Read all about configuration files in chapter 6 of the Instruction Manual. A default configuration file that includes all settings is available:

Bootloader

Really read chapter 15.4 of the Instruction Manual for details about the bootloader before using it. Unless you want to program a new empty ATmega328P microcontroller yourself, you do not need this.

Kettu Multi Manager

The Kettu Multi controller can be configured and monitored with the free Windows KettuMultiManager PC software. Read chapter 4 of the instruction manual for details.

KettuMultiManager software for monitoring and configuration
Screenshot of the KettuMultiManager software with the game parameters
(click for a larger version)

KettuMultiManager software for monitoring and configuration
Screenshot of the KettuMultiManager software with the electronics parameters
(click for a larger version)

Timing parameters

Kettu Multi ARDF timing sequence with parameters
Kettu Multi timing sequence with all parameters (click for a larger version)

Electronics

Read chapter 10 of the Instruction Manual for all details about the electronics.

Kettu Multi Schematics Principles

Schematics principle of how to connect the electronics to the Kettu Multi Controller
(click for a larger version)

Kettu Multi Electronics example

Example of an already built Kettu Multi Controller (PA0LEZ)

Preassembled parts

All information to assemble parts of the Kettu Multi system yourself is available on this site. However, if you like the convenience of buying preassembled parts, have a look at the website of EMCO Electronics.

2023-2024 by Ivo Klinkert, PA1IVO - Contact