Ham Radio 20 / 40 Meter Short Coax Trap Dipole Antenna | The Wonderful World of Microcontroller!
To Trap or Not to Trap
Low Cost Antenna Traps - Resource Detail - The DXZone.com
Antenna Trap Calculator - Calculator Academy
Coil-Shortened Dipole Antenna Calculator
Bootstrap coax traps for antennas
The Coax trap program computes design parameters for the construction of coaxial traps for HF usage. Typically these are constructed from PVC tube and RG58/59 coax
30- or 20- & 39-Meter Vertical Trap Antenna
trap antennas coaxial trap coax dipole antenna loss resistance