Issued for successful communications with 100 different grid squares, worldwide. Simple grid squares are used, such as EN73.

Endorsements are available in increments of 25 grid squares. Band and Mode endorsements are available.

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QRP Quarterly

QRP Quarterly - April 2015

QRP Quarterly - April 2015

 

Technical Articles
 
Idea Exchange (Mike Czuhajewski WA8MCQ)
    Bargraph SWR Indicator (N2CX)
    Tuning Tool using PCB (K7QO)
    Current Limiting for LED Displays (KC0ZNG)
    More BS-170 MOSFET Amplifier Notes (W0UFO)
    Homebrew Keyer using PCB Material (VE3CQH)
    Quick Change Solder Dispenser (K7QO)
    Oscilloscope Feet Made From Hardware (Bob Savino)
    Testing Fuses in Fluke DMMs (WA8MCQ)
    More Useful Prototyping Boards (KC0ZNG)
    Simple Continuity Tester (AA6KI)
Small Loop Antenna (George Dorner W9ZSJ)
Ionospherica (Kai Siwiak KE4PT)
The CALF - Audio Filter (Curt Milton WB8YYY and John Clements KC9ON)
Let's Build Something Part 2 (Ben Kuo KK6FUT & Pete Juliano N6QW)
Antennas 101: Feedlines as Impedance Transformers (Gary Breed K9AY)
 
The Joy of QRP
 
Editorial (Tim Stabler WB9NLZ)
From the President (Ken Evans W4DU)
Four Days In May (FDIM) 2015
Out and About with QRP (Craig Behrens NM4T)
QRP Clubhouse (Tim Stabler WB9NLZ)
QRP Contests (Jeff Hetherington VA3JFF)
    Results of the 2014 Holiday Spirits Homebrew Sprint
    Results of the 2014 New Years Sprint
    Results of the 2014 Fireside SSB Sprint
 

Mailing to subscribers - 22 April 2015


 

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