Table of contents

This webpage lists all existing webpages at www.qrp4fun.de. New and modified pages are marked with a time stamp for 2 months. To do this, simply move the mouse pointer over the marker new or modified. In addition, there is also a Search to find any words on all webpages listed here.
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Hello and welcome
Amateur radio - what's this?
Who I am
Search and found
Imprint, privacy, contact
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News and information
DLFF activities in spring 2025 9.3. - 23.3.2025
Archive of news and information
Again: Around the Brocken - on the way in the Upper Harz 15. - 23.2.2025
 – DLFF activities in fall 2024 20.10. - 3.11.2024
 – On the way in the Black Forrest and 16. Black Forrest Meeting 14. - 29.9.2024
 – Bicycling around Joachimsthal 14. - 29.9.2024
 – DLFF activities in spring/summer 2024 10.5. - 24.8.2024
 – With a radio station in Cyprus, the island of Aphrodite 17. - 28.4.2024
 – Visiting the new ones in the state of Brandenburg 13.4.2024
 – DLFF activities instead of Easter egg hunts 29. - 31.3.2024
 – DLFF activities in fall and winter 2023/2024 15.10.2023 - 9.3.2024
 – From the ravine to the summit 29.9. - 3.10.2023
 – 15. Black Forrest Meeting of QRPer and homebrewer 30.9.2023
 – By bike through the Uckermark and the Barnim Plateau 12. - 19.8.2023
 – By bike through the Uckermark 15. - 23.7.2023
 – Hount for DXCC points in CQ WW WPX 27. - 28.5.2023
 – Winter holidays in Liechtenstein 12. - 18.2.2023
 – Between Christmas and New Year in Harz Mountains 26.12.2022 - 1.1.2023
 – DLFF in autumn 2022 6. - 13.11.2022
 – SOTA and DLFF in the Black Forrest 29.9. - 3.10.2022
 – 14. Black Forrest Meeting of QRPer and homebrewer 1.10.2022
 – HBFF, SOTA and WCA in Liechtenstein 15. - 31.7.2022
 – DLFF in Spring/Summer 2022 12.3. - 9.7.2022
 – Winter storms and sunshine 12. - 27.2.2022
 – On the way in Brandenburg 14. - 26.9.2021
 – WWFF/DLFF - Alternative for the DX hunt 12. - 22.6.2021
 – Again: SOTA activities and hiking in Liechtenstein 14. - 30.8.2020
 – Again: Activation in the Alps on the lowbands 19.12.2019 - 4.1.2020
 – 13. Black Forrest Meeting of QRPer and homebrewer 5.10.2019
 – 7 summits in 7 days - SOTA in the Black Forrest 28.8. - 4.10.2019
 – SOTA activities and hiking in Liechtenstein 13. - 28.7.2019
 – Activation in the Alps on the lowbands 22.12.2018 - 5.1.2019
 – 12. Black Forrest Meeting of QRPer and homebrewer 29.9.2018
 – SOTA and QRP in the Black Forrest 28. - 30.9.2018
 – SOTA activities in Liechtenstein 14. - 21.7.2018
 – White Christmas in the mountains 22.12.2017 - 6.1.2018
 – 3 summits in 2 days - SOTA in the Black Forrest 1. - 2.10.2017
 – 11. Black Forrest Meeting of QRPer and homebrewer 30.9.2017
 – Jersey - English language and French flair 10. - 17.6.2017
 – Northern lights and amateur radio in Iceland 20. - 25.3.2017
 – End of the year in Liechtenstein 17.12.2016 - 1.1.2017
 – On your marks (summits), get set, go! 2. - 3.10.2016
 – 10. Black Forrest Meeting of QRPer and homebrewer 1.10.2016
 – On the way in Liechtenstein 10. - 25.5. and 12. - 20.9.2015
 – Between Christmas and New Year in Liechtenstein 21.12.2014 - 3.1.2015
 – Hiking at the Azores 14. - 25.5.2014
 – Turn of the year in Liechtenstein 21.12.2013 - 5.1.2014
 – 7. Black Forrest Meeting of QRPer and homebrewer 5.10.2013
 – Highland, Lochs and Castles to on the way in Scotland 17. - 30.8.2013
 – Mountains, snow and a radio station 12. - 27.1.2013
 – Hiking in the Principality of Liechtenstein 14. - 29.7.2012
 – Around the Brocken - on the way in the Upper Harz 14. - 29.1.2012
 – On the way on water-waves and on radio-waves 16. - 22.7.2011
 – Chalk, stones, wind und air waves on Rügen 9. - 25.4.2011
 – Around Iceland 15. - 28.7.2010
 – Tierra del Fuego - at the end of the world 19.12.2009 - 4.1.2010
 – Wildflowers in the desert of South Africa 21.8. - 5.9.2009
 – Festival in the old town of Nauen - amateur radio visualized 9.5.2009
 – Handicraft weekend in Jessern 24. - 26.4.2009
 – Sand and more - Sandsation in Namibia 14. - 29.3.2008
 – Andorra - on the way in the Pyrenees 25.7. - 3.8.2007
 – Between glaciers and geysers - crosswise by Iceland 13. - 26.7.2006
 – Nepal - under the roof of the world 23.12.2005 - 6.1.2006
 – Ireland, the Emerald Island 25.7. - 7.8.2005
 – 3. Adlersberg Meeting - QRP, Homebrewing and Youth 23. - 25.7.2004
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Fascination of QRP and DXing
What is QRP operation and what should I consider with it?
 – What hides itself behind QRP?
 – Operation mode - not only with a QRP station
Which technical demands required the QRP operation?
 – Antenna Rules of Thumb Jim Duffey, KK6MC
Where can I receive assistance?
 – QRP frequencies
What are DX stations, how do I find these and how reach I these?
 – List of DXCC entities
 – List of callsign series
 – Number of DXCC entities reached
 – Thoughts on Working DX Jim Duffey, KK6MC
QRP Hall of Fame QRP Amateur Radio Club International
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A lot of fun with wireless telegraphy
(My) reasons for the use of CW
Structure of a CW character
International CW characters
 – Enumeration of international CW characters
CW abbreviations
 – List of CW abbreviations
CW rate and PARIS standard
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Transceiver - you can't own enough of that
Transceivers by Elecraft Wayne Burdick, N6KR; Eric Swartz, WA6HHQ
 – Elecraft KX3
 – Elecraft K1
 – Elecraft K2
  – Modifications for the Elecraft K2
Transceivers by Wilderness Radio Wayne Burdick, N6KR
 – NorCal40A
 – NorCal40A (modified for 80 m)
Transceivers by Small Wonder Labs Dave Benson, K1SWL
 – Green Mountain 10
 – Labs Green Mountain 15
  – Modification for the Green Mountain 10 and 15
Transceivers by other developers/manufacturers
 – Spatz Peter Solf, DK1HE
 – Index Laboratories QRP Plus
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Antennas, masts and tuners
Antennas
 – Super Antennas MP-1 Vern Wright, W6MMA
    and Difona HF-P1
 – Can antenna Arthur Wenzel, DL7AHW
  – Construction of the can antenna
 – Spiderbeam 18m fibreglas telescope mast Founder Cornelius Paul, DF4SA
  – Experiences with the 18m fibreglas telescope mast
Masts
 – Fibreglass Telescope Tower FTT Walter Spieth, DK9SQ
  – Vertikal antenne on the balkony
  – Approval
  – Self-declaration
 – Multi-band antenna to use out and about
  – Construction of the multi-band antenna to use out and about
 – Twisted-Hille antenna Peter Zenker, DL2FI
  – Construction of a Twisted-Hille antenna - extended version
 – DX-Wire 10 m GFK Mast Mini Peter Bogner, DK1RP
  – Protection for telescopic masts
 – Lambdahalbe 6 m GFK Portable Mast Willi Daubermann, DH3PZ
Tuners
 – LDG Electronics QRP Automatic Tuner Dwayne Kincaid, WD8OYG
  – Modifications for the QRP Automatic Tuner
 – Emtech ZM-2 Roy Gregson, W6EMT
 – Tuner for multiband Fuchs antenna Frank Lamprecht, DL7AQT
  – Construction of the multiband Fuchs antenna
 – QRPproject ZM-4 Peter Zenker, DL2FI
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Power supply, battery and charger
Main power supply
 – Voltcraft FPS 4A
 – Voltcraft FPS-1132
 – Statron 2225.2
Sealed lead-acid technology
 – Sealed lead-acid batteries
  – Capacity of sealed lead-acid batteries
  – Charge methods of sealed lead-acid batteries
  – Usage hints of sealed lead-acid batteries
 – Egston Mainy
  – Conversion of the Egston Mainy to a sealed lead-acid battery charger
NiMH technology
 – Varta NiMH batteries
  – Clip for 9-V-block battery
 – Basetech BTL-12 and Basetech BTL-14
LiFePo4 technology
 – LiFePo4 batteries
 – Minimum capacity of LiFePo4 batteries
 – Egston N2EFSW3-12W
 – Conversion of the Egston N2EFSW3-12W to a LiFePo4 battery charger
 – Voltcraft SPS24-24W-A
  – Conversion of the Voltcraft SPS24-24W-A to a LiFePo4 battery charger
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Accessory for the station
Morse keys by Kent Engineers
 – Kent Engineers KT1 - Hand Morse Key
 – Kent Engineers TP1 - Twin Paddle Morse Key
 – Kent Engineers SP1 - Single Paddle Morse Key
Morse keys by Palm Radio
 – Palm Radio PPK - Palm Portable Key
 – Palm Radio PS - Palm Single
Morse keys by other developers/manufacturers
 – Minkey Englmar Wenk, DK1WE
 – BaMaTech Mini Morse Key Markus Baseler, DL6YYM
 – CWF - finger morse key Gerd Lienemann, DF9IV
  – Construction of the CWF - finger morse key
Home-made morse keys
 – Funky - a key using pressure sensors
  – Construction of the Funky - a key using pressure sensors
Keyers and other controls
 – K1EL WKmini nano UK - Kanga Products
  – Control of the K1EL WKmini nano UK
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Meters and testers
Frequency Counter
 – Small Wonder Labs Freq-Mite Dave Benson, K1SWL
 – Almost All Digital Electronics (AADE) DFD1
 – Frequency counter without current
SWR/Power/Voltage Meter
 – Oak Hills Research (OHR) WM-2 Founder Doug DeMaw, W1FB
  – Modifications for the WM-2
 – QRPproject RF/AF probe
 – SWR-Meter
Antenna Analyzer
 – MFJ Enterprises MFJ-259B
  – Technical documentations for MFJ-259 and MFJ-259B
 – SARK-110 Melchor Varela, EA4FRB
Component tester
 – Almost All Digital Electronics (AADE) L/C Meter IIB
  – Modification for the L/C Meter IIB
Network analyzer
 – Box 73 FA-NWT1
  – Extentions for the FA-NWT1
 – Box 73 FA-NWT2
Generators
 – Noise generator
  – Construction of the noise generator
 – RS-GGO10M-TG - 10 MHz frequency standard
  – Construction of the 10 MHz frequency standard with an RS-GGO10M-TG
DC/Power Meters
 – Voltcraft PM-60-A
Options
 – Dummy loads
  – Various dummy loads
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Tools and tips
NJ Islander Dov Rabinowitz, AD0V
 – The NJ Islander and ICs
Step drill
 – Use of step drills
Magnifying glass
Sprat CD-ROM, first edition with issues 1-100
 – Installation of the Sprat CD-ROM without floppy drive
Adapter BNC-plug to pole-terminal
Coil winding - the easy way
 – Tutorial Coil winding - the easy way
Stand for transceiver
 – Stand for small transceiver build from a CD case Alex Krist, KR1ST
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Helpful mathematics
Resistors
 – Parallel/series connections of up to 5 resistors E12
 – Parallel/series connections of 2 resistors E12/E24/E48
 – Star-delta-transform of resistors
 – Attenuators
 – Power attenuators
 – Attenuators with minimum loss
 – Signal splitters with resistors
 – Color code for resistors
Capacitors
 – Parallel/series connections of up to 5 capacitors
 – Band spread with variable capacitors
Reactances
 – Parallel/series connections of reactances
 – Convertion of reactances
 – Reactances and coils/capacitors
LC networks
 – Tank circuits
 – Fuchs networks
 – Match of resistances with LC networks
 – Match of reactances with LC networks
 – Antenna reactances
Power and voltage
 – Power and voltage conversion at 50 Ω
Location, distance and direction
 – Locator conversion in latitude/longitude
 – Distance an direction between 2 ponits of earth
Thermal resistor
 – Heatsink
Telegraphy
 – Keying speed
Antenna
 – Doublet antenna
 – Universal antenna
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Special links
QRP clubs
Other QRP stations
QRP equipment and kits
Electronic elements
Antennas and masts
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Software for ham radio operators
AF spectrum display
 – Spectrogram Richard Horne
 – Spectrum Lab Wolfgang Büscher, DL4YHF
PCB design
 – sPlan Abacom Ingenieurgesellschaft
 – Sprint-Layout Abacom Ingenieurgesellschaft
Map representations
 – Azimuth Tony Field, VE6YP
 – AZMap Paul Burton, AA6Z
 – Free Azimuthal Maps Tom Epperly, NS6T
 – Mini Ring Core Calculator Wilfried Burmeister, DL5SWB; Klaus Warsow, DG0KW
Propagation conditions
 – NCDXF/IARU International Beacon Network
  – Beacon schedule
 – VOACAP NTIA/ITS
 – Kp Index German Research Centre for Geosciences
 – Space Weather Conditions Space Weather Prediction Center
 – Solar-Terrestrical Data Paul L. Herrmann, N0NBH
Call sign lists
 – HamQTH Petr Hlozek, OK2CQR
 – QRZ.COM Fred Lloyd, AA7BQ
 – Hamcall Buckmaster International
Internet
 – SelfHTML Stefan Münz
 – ftp-uploader Gregor Schommer Systemberatung
 – MailWasher Free Mailwsher
    and MailWasher Pro Firetrust
 – AntiVir Avira
 – Firefox Mozilla Foundation
 – Thunderbird Mozilla Foundation
 – form.taxi Reinhard Söllradl - wrkt*biz
 – Validators with W3 Consortium
    Makeup Validator Service, CSS Validation Service, Link Checker
Astronomy
 – Javascript Lunar Eclipse Explorer Fred Espenak; Chris O′Byrne
 – Javascript Solar Eclipse Explorer Fred Espenak; Chris O′Byrne
UTC and local time
Control
 – KComm Julian Moss, G4ILO
 – K1EL WKmini nano UK
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Electronic gadgets
Games
 – Kalah
 – Four in a row
 – Master Mind
 – Super Master Mind
WE1 - World radio ELV Elektronik
KLU2001 - DCF77 controlled clock ELV Elektronik
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Food for heart and soul
The Wisdom of the Monk Transcript
Flying subtenants
Mammatus clouds
Total lunar eclipse with "super blood moon"
As with the eye doctor
Stealth Antenna
Jumbled letters
I love CW
Number problem
Cleaning
I wish you the time Elli Michler
Inexhaustible power source
When God created the man unknown author
Desiderata Max Ehrmann
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Logbooks - including those for DXpeditions
Logbook DK3RED
Logbuch 5B/DK3RED
Logbook CT7/DK3RED
Logbook EA8/DK3RED
Logbook EI/DK3RED
Logbook HB0/DK3RED/P
Logbook MJ/DK3RED
Logbook TF/DK3RED/P
Logbook DK3RED/TI2
Logbook TK/DK3RED/P
Logbook ZL/DK3RED
Logbook ZS/DK3RED
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QSL cards - sent and received
Sent QSL cards
Received QSL cards from DX stations
Received QSL cards from European stations
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Guestbook
Notes for the guestbook