Links
Antennas
Magnetic loop
PA3CQR mag loop page some schematic diagrams and very useful links
ON4CEQ loop page how to build a variable capacitor
KR1ST loop information information about a small loop for QRP
Homebrewing
Z-Match Tuners
KC8AON Z-match tuner page a 50 watts Z-match tuner
AD5X Z-match article a comprehensive description of a 100 watts Z-match tuner
JH5ESM tuner page a QRP Z-match tuner description