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Table of contents (this webpage here)
Welcome at QRP4Fun
Amateur radio - what's this?
Who I am
News and informations
newSOTA activity and hiking in Liechtenstein (2) 14. - 30.8.2020
Archive with the following informations
Activation of the Alps on the lowbands (2) 19.12.2019 - 4.1.2020
7 summits in 7 days - SOTA in the Black Forrest 28.9. - 4.10.2019
SOTA activity and hiking in Liechtenstein 13. - 28.7.2019
Activation of the Alps on the lowbands 22.12.2018 - 5.1.2019
12th Black Forrest Meeting of QRPer and homebrewer 29.9.2018
SOTA and QRP in the Black Forrest 28. - 30.9.2018
SOTA activity 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
11th 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 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
10th Black Forrest Meeting of QRPer and homebrewer 1.10.2016
On the way in Liechtenstein 10. - 25.5. und 12. - 20.9.2015
Between the years 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
7th 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
3rd 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
- DXCC results reached until now from me
- 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
Elecraft KX3 Wayne Burdick, N6KR; Eric Swartz, WA6HHQ
Elecraft K1 Wayne Burdick, N6KR; Eric Swartz, WA6HHQ
Spatz Peter Solf, DK1HE
Elecraft K2 Wayne Burdick, N6KR; Eric Swartz, WA6HHQ
- Modifications for the Elecraft K2
- Birth certificate for my Elecraft K2
Wilderness Radio NorCal40A (modified for 80 m) Wayne Burdick, N6KR
Wilderness Radio NorCal40A Wayne Burdick, N6KR
Small Wonder Labs Green Mountain 10 Dave Benson, K1SWL
Small Wonder Labs Green Mountain 15 Dave Benson, K1SWL
- Modification for the Green Mountain 10 and 15
Index Laboratories QRP Plus
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Antennas, masts and tuners
Fibreglass Telescope Tower FTT Walter Spieth, DK9SQ
- Vertikal antenne on the balkony
- Approval
- Self-declaration
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
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
Lambdahalbe 6 m GFK Portable Mast Willi Daubermann, DH3PZ
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
Voltcraft FPS 4A Conrad Electronic
- and Voltcraft FPS-1132 Conrad Electronic
Varta NiMH batteries
- Clip for 9-V-block battery
Basetech BTL-12 Conrad Electronic
- and Basetech BTL-14 Conrad Electronic
Sealed lead-acid batteries
- Capacity of lead-acid batteries
- Charge methods of lead-acid batteries
- Usage hints of lead-acid batteries
Egston Mainy as charger for sealed lead-acid batteries
- Conversion of the Egston Mainy to a sealed lead-acid battery charger
LiFePo4 batteries
Egston N2EFSW3-12W as charger for LiFePo4 batteries
- Conversion of the Egston N2EFSW3-12W to a LiFePo4 battery charger
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Accessory for the station
KT1 - Hand Morse Key Kent Engineers
SP1 - Single Paddle Morse Key Kent Engineers
TP1 - Twin Paddle Morse Key Kent Engineers
Funky - a key using pressure sensors
- Construction of the Funky - a key using pressure sensors
CWF - finger morse key Gerd Lienemann, DF9IV
- Construction of the CWF - finger morse key
Minkey Englmar Wenk, DK1WE
Palm Portable Key Palm Radio
BaMaTech Mini Morse Key Markus Baseler, DL6YYM
Palm Single Palm Radio
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Meters and testers
Small Wonder Labs Freq-Mite Dave Benson, K1SWL
Almost All Digital Electronics (AADE) Digital Frequency Display DFD1
Frequency counter without current
MFJ Enterprises MFJ-259B
- Technical documentations for MFJ-259 and MFJ-259B
Almost All Digital Electronics (AADE) L/C Meter IIB
- Modification for the L/C Meter IIB
Oak Hills Research (OHR) WM-2 Founder Doug DeMaw, W1FB
- Modifications for the WM-2
QRPproject RF/AF probe
Funkamateur (Box 73) FA-NWT1
- Extentions for the FA-NWT1
Funkamateur (Box 73) FA-NWT2
SARK-110 Melchor Varela, EA4FRB
Noise generator
- Construction of the noise generator
10 MHz frequency standard with RS-GGO10M-TG
- Construction of the 10 MHz frequency standard with an RS-GGO10M-TG
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
- Calculation of parallel/series connections of up to 5 resistors series E12
- Calculation of parallel/series connections of 2 resistors series E24/E12
- Calculation of the star-delta-transform of resistors
- Calculation of attenuators
- Calculation of power attenuators
- Calculation of attenuators with minimum loss
- Calculation of signal splitters with resistors
- Color code calculator for resistors
- Calculation of parallel/series connections of up to 5 capacitors
- Calculation of band spread with variable capacitors
- Calculation of parallel/series connections of reactances
- Conversion of reactances in parallel/series connections
- Calculation of reactances
Resonant circuits and LC networks
- Calculation of resonant circuits
- Calculation of Fuchs networks
- Calculation of match of resistances with LC networks
- Calculation of match of reactances with LC networks
- Calculation of antenna reactances
Power and voltage
- Conversion of power at 50 Ω
- Conversion of power and voltage at 50 Ω
Spherical geometry
- Calculation of the distance and direction between 2 points
Thermal resistor of a heatsink
- Calculation of the thermal resistor of a heatsink
Keying speed
- Conversation of the keying speed
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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
Spectrogram Richard Horne
Spectrum Lab Wolfgang Büscher, DL4YHF
sPlan Abacom Ingenieurgesellschaft
Sprint-Layout Abacom Ingenieurgesellschaft
Azimuth Tony Field, VE6YP
AZMap Paul Burton, AA6Z
Free Azimuthal Maps Tom Epperly, NS6T
Mini Ring Core Calculator Wilfried Burmeister, DL5SWB; Klaus Warsow, DG0KW
NCDXF/IARU International Beacon Network
- Beacon schedule
Kp Index German Research Centre for Geosciences
Space Weather Conditions Space Weather Prediction Center
Solar-Terrestrical Data Paul L. Herrmann, N0NBH
HamQTH Petr Hlozek, OK2CQR
QRZ.COM Fred Lloyd, AA7BQ
Hamcall Buckmaster International
SelfHTML Stefan Münz
ftp-uploader Gregor Schommer Systemberatung
MailWasher Free Mailwsher
- and MailWasher Pro Firetrust
AntiVir Avira
Firefox Mozilla Foundation
Thunderbird Mozilla Foundation
SmtpJS Infinite Loop Ltd
Validators with W3 Consortium
- Makeup Validator Service, CSS Validation Service, Link Checker
Javascript Lunar Eclipse Explorer Fred Espenak; Chris O'Byrne
Javascript Solar Eclipse Explorer Fred Espenak; Chris O'Byrne
UTC and local time
KComm Julian Moss, G4ILO
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Electronic gadgets
WE1 - World radio ELV Elektronik
KLU2001 - DCF77 controlled clock ELV Elektronik
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Food for heart and soul
Total lunar eclipse with "super blood moon"
As with the eye doctor
Stealth Antenna
Twisted letters
I love CW
Number problem
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 - domestic and DXpeditions
Logbuch DK3RED
Logbuch CT7/DK3RED
Logbuch EA8/DK3RED
Logbuch EI/DK3RED
extended Logbuch HB0/DK3RED/P
Logbuch MJ/DK3RED
Logbuch TF/DK3RED/P
Logbuch DK3RED/TI2
Logbuch TK/DK3RED/P
Logbuch ZL/DK3RED
Logbuch ZS/DK3RED
Notes for the logbooks
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QSL cards - sent and received
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Notes for the guestbook
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- Notes for contact