DJ5CW (ex DJ1YFK) - Fabian Kurz - Amateur Radio Website

Updated / News:

2026-04-12: "Kraftwerk" - Remote DC controller
2025-08-25: SO2R Mini Plus
2025-01-29: ICOM band decoder with TCA965
2024-09-28: QRSS / WSPR monitor: 24h view
2024-09-26: YFKlog 0.7.0 released
2024-09-17: SO5CW QRSS Grabber and WSPR monitor
2024-04-13: jscwlib 0.3.0
2024-02-11: WsprryPi extended: QRSS/DFCW
2023-08-16: ebook2cw 0.8.5 released
2023-07-02: RBN Ranking: Separate list for beacons
2022-07-18: CW Clubs RBN Spotter (Telnet improvements)
2022-03-20: jscwlib 0.2.2
2022-01-24: qrq 0.3.5 released
2022-01-06: CW Clubs RBN Spotter (Award filters)
2021-05-07: CW Clubs RBN Spotter (Telnet filters)
2021-04-07: ebook2cw 0.8.4 released
2021-04-06: jscwlib 0.2.1
2020-07-27: RBN activity now with 6m/4m/2m
2020-05-23: ebook2cw 0.8.3 released
2020-05-15: jscwlib: JavaScript Morse code / CW Library
2020-04-17: LCWO usage stats (12 years)
2020-02-25: CW Clubs RBN Spotter (Telnet)
2020-02-13: CW Clubs RBN Spotter (extended)
2019-10-20: New: CWops Award Tools
2019-09-08: yfklog 0.6.0 released
2019-08-02: yfklog 0.5.0 released
2019-06-30: yfklog 0.4.0 released
2019-05-09: qrq 0.3.3 released
2019-03-09: dxcc 20190309 released
2019-03-09: qrq 0.3.2 released
2019-01-21: RBN activity now in realtime
2018-12-06: Check similarity of calls in CW
2018-11-06: TS-440S repair notes
2018-10-31: CW Clubs RBN Spotter
2018-06-01: New call: SO5CW
2018-03-04: RBN Ranking: DXCC filter
2017-05-20: RBN Activity Ranking
2016-08-21: Websocket DX-Cluster/Telnet Gateway
2016-06-19: Embeddable RBN activity reports
2016-06-19: Bio: HA/ and OM/DJ1YFK
2016-05-01: 65 Years HSC - Award
2016-04-16: Bio: OE/DJ1YFK
2016-03-21: Bio: YL/DJ1YFK
2016-03-01: QSLinfo.de relaunch
2016-01-01: RBN Activity Charts
2015-01-12: HSC Marathon calculator updated
2014-09-27: Band occupancy observations
2014-02-27: YFKtest: New maintainer W9YA
2013-09-28: Bio: LZ2013HST
2013-08-18: Mind the gap! About Morse Spacing.
2013-07-21: RBN bandmap view (updated)
2013-02-14: cwbiff v0.3.0
2013-02-10: svn.fkurz.net is live
2013-01-25: JavaScript Morse Decoder
2013-01-23: ebook2cwgui v0.1.2
2013-01-12: RBN / DX cluster bandmap view
2013-01-06: qrq 0.3.1 released
2013-01-04: ebook2cw v0.8.2
2012-10-22: RBN Telnet Filter updated.
2012-10-21: Bio: HB9HST, HB9/DJ1YFK
2012-09-17: New call: WB6LQR
2012-02-25: CW alarm clock
2011-12-18: qrq 0.3.0 (Win32, Linux, Unix)
2011-10-18: QSL cards with LaTeX
2011-07-20: Morse Code - alive and kicking!
2011-07-08: Morse My IP 2.0
2011-06-27: Vortrag: Morsen lebt!
2011-06-20: ebook2cw book list
2011-05-13: FCC Exam Practice
2011-05-08: ebook2cwgui v0.1.0
2011-04-04: ebook2cw v0.8.1
2011-03-10: ebook2cw book list
2011-02-23: RBN Telnet Filter
2011-02-07: Bio: E7/DJ1YFK
2011-01-31: Bio: OE/DJ1YFK
2011-01-04: cwbiff v0.2.1

Ham Radio

I am a licensed radio amateur (1998-2021: DJ1YFK, DJ5CW since Dec 10, 2021), mostly active in Morse telegraphy, on the ham radio HF bands in contests.
I also take part in international High Speed Telegraphy competitions as a member of the German national team.

Information and activities

Ham Bio - About my ham activities, history, club memberships, former callsigns, etc.

Home station in Munich: Elecraft K2, 10W, 10/15m long vertical (160m - 10m) (pics: 1, 2, 3)

Portable operation: Elecraft K1-4, 5W, wires (picture); VHF/UHF: FT-857

SO5CW - my station and activities in Poland

DJ1YFK / DJ5CW online log (real time online logbook and statistics, since 1998) and RBN Activity

My "Ham Stuff" - Small projects, code snippets, statistics, experiments, ranging from trivial to ridiculous. Last updated: August 2024 .

QRSS and WSPR activities on HF (QRPP) at DJ5CW and SO5CW

Amateur radio software projects / websites / services

Morse Code

Logging

Other projects

dxcc - ARRL DXCC lookup utility in Perl, command line and GUI (March 2019)

QSLinfo.de - QSL manager and address database (programming, hosting; the database itself is maintained by DL1SBF)

Interactive VHF-UHF-SHF-EHF beacon list hosted at DL0TUD / DM7A

RBN and Windle Score Calculator (mainly for members of the First Class CW Operators' Club)

HSC Marathon Calculator (mainly for members of the High Speed Club)

CWops Award Tools (mainly for members of the CW Operators' Club)

RBN Activity Graphs - Comprehensive RBN activitiy of all callsigns ever spotted.

QRQpoint.com - European QRQ Meeting Point - 3567 kHz

WsprryPi + QRSS - Fork of the WsprryPi program with added QRSS / DFCW functionality

Most of the code can also be browsed online in the git repositories on git.fkurz.net.

If you want to help covering the running costs of my web projects, look here. Thanks.

Amateur radio hardware projects

TCA965 ICOM band decoder - A very simple ICOM band decoder using the TCA965 Window Comparator (10/2024)

SO2R MiniPlus - A simple SO2R box based on NN1C's SO2R Mini design (8/2025)

Kraftwerk - A versatile DC power distributor for remote operation (3/2026)

Miscellaneous

Yaesu FT-890/FT-840 QRH problem - Drift due to faulty capacitor in the reference oscillator. How to fix it.

160m DX recordings - Selection of DX stations worked or heard on 160m (2010)

MorseRunner recordings - Some recordings of MorseRunner sessions (HST mode)

136 kHz activities - Station / antenna description, logbook, pictures (from my active time on long wave, ca. 2001-2003)

Analysis of DX-Spots and logs in WRTC 2006 - Catching contest cheaters with statistics. (August 2006)

Betriebsart CW - Morsen lebt! / Morse Code - Alive and Kicking! - Vortrag/Presentation, Ham Radio, Juni 2011

German translation of the WSJT-Manual (outdated, Version 2.0) (pdf, 700 kB)

DL1A contest group - HF contesting from near Munich (now QRT).

Last modified: Tuesday, 17-Mar-2026 21:57:48 CET

Fabian Kurz, DJ5CW