From:
rec-radio-info-request@panix.com (DXZone via rec.radio.info Admin)
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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* Origin: News Gate @ Net396 -Huntsville, AL - USA (1:396/4)