Useful Links

• Magnetic core material info
• Fair-Rite (Ferrite) PDF catalog
• http://www.fair-rite.com/files1/Fair-Rite_Catalog_17th_Edition.pdf
• Toroid info
• https://toroids.info/
• Power handling
• https://www.vkham.com/Info/ferro/tut_3.html
• MicroMetals powder iron core
• https://www.micrometals.com/
• Callsign lookups
• https://www.qrz.com/
• Places to order electronic components
• https://www.digikey.com/
• https://www.mouser.com/
• https://www.newark.com/
• https://www.jameco.com/
• https://www.arrow.com/
• https://www.sparkfun.com/
• Propagation Reporter and Prediction
• https://www.pskreporter.info/
• http://wsprnet.org/drupal/
• https://www.voacap.com/hf/
• Neat software
• Digital modes
• WSJT-X
• https://www.physics.princeton.edu/pulsar/k1jt/wsjtx.html
• Grid Tracker for WSJT-X
• https://tagloomis.com/grid-tracker/
• FLDIGI used for PSK31 and other modes
• http://www.w1hkj.com/
• Operating systems
• https://ubuntu-mate.org/
• Online Calculators
• Magnetic Loop Antenna calculator
• http://www.66pacific.com/calculators/small-transmitting-loop-antenna-calculator.aspx
• RF exposure calculator
• http://hintlink.com/power_density.htm
• Transmission Line calculator
• https://cecas.clemson.edu/cvel/emc/calculators/TL_Calculator/index.html
• https://kc7hxc.us/links/radio/Coax%20Calc/Coax%20Calculator.html

I will add more as time goes on