Downloadable Files


This is a collection of miscellaneous software that I have developed.

DX Logger

This is a Filemaker Pro runtime application which automatically logs the stations you have worked. It is preloaded with data on medium wave radio stations in North and South America. It has the capability of looking up stations by call sign or frequency and automatically calculating the distance from the transmitter to your receiver location.

Go to DX Log Download Page

Loop Antenna Inductance Calculations

These are two open document format spreadsheet files for calculating inductance of  polygonal flat spiral loops and polygonal helical loops.

2016-05-19 Update note: I’ve received some feedback from Excel users reporting problems using the .ods format files, so I’ve now added .xls format files which should fix the problem. If you have any problems with these files, please let me know.

Download Spiral Loop Inductance Spreadsheet:



Download Helical Loop Inductance Spreadsheet:



In addition, here is a spreadsheet for determining self-capacitance and verifying inductance using a series of test measurements as described on this page.

Download Self-capacitance Spreadsheet:



Polynomial Least Squares Fitting Calculator

This is a utility that will fit your x-y data points to a polynomial curve of any specified degree.

Windows version:

Macintosh version:

Raspberry Pi version:

Superhet Tracking Calculator

This is a multipurpose application that aids in the design of superheterodyne receiver tracking, as well as bandspread calculations and tuning capacitor frequency scale calibration. Unlike other tracking calculators which require the user to enter 3 tracking frequencies, this program optimizes the tracking and determines the best tracking frequencies for the given tuning range and other specified parameters.

Current version is 1.01

[Updated 2008-11-12]

Download Macintosh version (for PowerPC or Intel, OSX 10.3 or later):

Download Windows version (for Windows 2000 or later):

Download Linux version (GTK+ 2.x, Intel processors):

Download the Tracker Documentation.

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This page last updated: March 15, 2022

Copyright 2009, 2016, Robert Weaver