XPost: rec.radio.amateur.equipment, rec.radio.info
The DXZone.com Amateur Radio Internet Guide
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Top Amateur Radio Websites - Issue 2218
Posted:
https://www.dxzone.com/top-amateur-radio-websites-issue-2218
Measuring with a MiniVNA, Automatic Arduino Antenna Switch, The KC5LDO
Vertical Antenna, Decoder CW, 2 Meter Portable Yagi Antenna, Arduino Nano
and si5351 Digital VFO/BFO, 70MHz Quarter Wave GP Antenna
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An introduction to the air cored coil
Posted:
https://www.dxzone.com/dx34873/an-introduction-to-the-air-cored-coil.html
Antennas/Coils
We use the term air core coil to describe an inductor that does not depend
upon a ferromagnetic material to achieve its specified inductance. This
covers the cases where there really is just air inside as well as windings
upon a different insulator such as bakelite, glass or PTFE etc. Do you need
an air coil?
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VSWR Calculator
Posted:
https://www.dxzone.com/dx34872/vswr-calculator.html
Software/RF Design
This calculator converts between VSWR and Return Loss, Reflection
Coefficient, Mismatch Loss, and Reflected Power.
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