Windows XP to 8.1

RadLog Professional

RadLog submits your readings from your geiger counter to Unzip before running the installer. You can connect your counter via serial link, bluetooth and audio. Share data, analyse your readings, browse your data history, export graphs and data.

The application requires the .NET framework 4.0, so ensure you have this installed prior to running the application installer. Suitable for Windows XP thru to 8.1. If you are using a USB-TTL converter, then check your device manager to see what COM port it is attached to. Speed is usually 9600 baud or 2400 baud.

Download the stable RadLog software V0.41 here. This has Lite/Pro modes, everyone gets Pro when they are registered to submit data.
Download the latest alpha RadLog software V0.42 here. This has Lite/Pro modes removed, all features enabled, some bugs however. Lots of new features for the radio amateur and weather website enthusiast. Please report bugs on the forum.

The software and website is provided free of charge, if you find it useful please consider donating to support development. Thank you!



New version V0.41!
So many new features! Shared data system
Browsable log with analysis
Audio counting mode
Caters for all standard units used worldwide
Customisable graphs
Audio pulse analysis
Customisable alert and warning emails
and more!

Here is my live chart for my station mw0uzo in Cardiff:


Linux and other platforms

Tadeusz, station pl_gdn_1 in Poland has written a Python script for submitting readings via the command line. This opens up a whole world of computers for submitting measurements, your Linux server, Raspberry Pi etc. Thank you Tadeusz for your excellent work!

Thimo, station ThibmoRozier the Netherlands has taken over the project to add some significant improvements. Audio pulse counting via your PC mic socket or line in is now possible, allowing you to connect any geiger counter to your computer that does not have serial communications. It has two flavours which can read one or two geiger counters at the same time. Most users will want the single counter version Thank you Thimo for improving the project!

Confirmed to work on Raspberry Pi!

Download here. To keep up to date with any development versions and new features check the pyradmon forum here. Check the documentation on the sourceforge page for any changes to the installation instructions. Raspberry PI installation instructions are here.



GKnet is a kit provided by BroHogan. This module, in combination with a plug-in WizNet ethernet module allows your counter to upload to and Xively without any PC or small computer. It contains a low power ATMEL microcontroller and is ideal for when a PC or other small computer is inconvenient, e.g. for an outdoor monitoring station. It is certainly cheaper too!



Here are some code snippets that should get you started:

Library includes

#include <SPI.h>
#include <Ethernet.h>

Arrays and object definitions

byte mac[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 }; // MAC ADDRESS OF YOUR ETHERNET ADAPTOR
IPAddress ip(192,168,0,5);  // YOUR IP
IPAddress server(; // RADMON.ORG IP, CHECK THIS
EthernetClient client;

Procedure to init

void init_ethernet()
    // give the ethernet shield a second to initialize:
    Ethernet.begin(mac, ip);

Procedure to send CPM value to radmon

void connect()
    if (client.connect(server, 80))
        client.print("GET /radmon.php?function=submit&user=");
        client.print(UserName); client.print("&password=");
        client.print(PassWord); client.print("&value=");
        client.println(" HTTP/1.0");
    { // you didn't get a connection to the server: }


OM1AMJ wrote a set of BASH scripts for sending readings to with bare minimum resource usage. Great work!
See the forum thread here:

Other programs compatible with

Radiation Logger

This software allows you to upload to and Xively at the same time.

Radiation Logger by RH Electronics


RadLogger Pro

RadLogger Pro by ThibmoRozier