F j w M a p

Program for planning of transmitter locations in ARDF competitions

and simple creations of data necessary for ARDF-FjwW

All rights reserve:   © Karl-Heinz Schade 2004-2021, www.dl7vdb.de     Commercial using is not permitted !

Hints to improve this English text are welcome !
Thanks for download and using FjwMap. The author is interested in error messages and new ideas.
The program is suitable for limited map sizes (approx. 10...20 km in terrain), the inaccuracy increases with the size.

Generation of the data for planning a new contest:

Edit functions:

Precise setting of locations with GPS data from GPX files (way points):

Storage of the generated data:

Open a MAP or image file:

Receiving of GPS-NMEA data on USB/COM port:

Printing the map with the locations:

Running route calculations for categories:

Limit time recommendation:

Display of running route stored in GPX/TCX files:

Drawing of the personal running route:

Work with Altitude data:


Precondition for the next three points is the using of coordinate crosses with setted GPS data !


All rights reserved:  Karl-Heinz Schade, Berlin/Germany DL7VDB
For all linked pages above I have no influence on the design and contents,
therefore I outdistances me expressly from the contents of this pages.
Program is using library to unpack of ZIP altitude data
// zlib.h -- interface of the 'zlib' general purpose compression library, version 1.1.3, July 9th, 1998
// Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
// and to store as JPG file
// jpge.cpp - C++ class for JPEG compression.
// Public domain, Rich Geldreich (richgel99@gmail.com)
// and algorithm to investigate the optimal searching order of
// Keld Helsgaun (keld@ruc.dk): An Effective Implementation of the Lin-Kernighan Traveling Salesman Heuristic
// Department of Computer Science, Roskilde University, Roskilde/Denmark