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This webpage lists all existing webpages at www.qrp4fun.de.
New and modified pages are marked with a time stamp for 1½ months.
To do this, simply move the mouse pointer over the marker 
or 
.
In addition, there is also a Search to find any words on all webpages listed here.
Hello and welcome
– Amateur radio - what's this?
– Who I am
– Search and found
– Imprint, privacy, contact
News and information
– DLFF activities in spring 2025 9.3. - 25.4.2025
– 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
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
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
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
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
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
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
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
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
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
Special links
– QRP clubs
– Other QRP stations
– QRP equipment and kits
– Electronic elements
– Antennas and masts
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
Electronic gadgets
– Games
– Kalah
– Four in a row
– Master Mind
– Super Master Mind
– WE1 - World radio ELV Elektronik
– KLU2001 - DCF77 controlled clock ELV Elektronik
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
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
QSL cards - sent and received
– Sent QSL cards
– Received QSL cards from DX stations
– Received QSL cards from European stations
Guestbook
– Notes for the guestbook