An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters
Low Cost Antenna Traps - Resource Detail - The DXZone.com
A 20- & 30- or 20- & 39-Meter Vertical Trap Antenna
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
ON7EQ COAX TRAPS
A 20- & 30- or 20- & 39-Meter Vertical Trap Antenna
A 20- & 30- or 20- & 39-Meter Vertical Trap Antenna
Simple Building and Tuning of Traps
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
SM2YER Goran's Homepage
Trapped dipole antennas | VK3ZPF Ham Radio Blog
Antenna Calculator and Design Software
Ham Radio 20 / 40 Meter Short Coax Trap Dipole Antenna | The Wonderful World of Microcontroller!
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Modeling Trap Antennas
Low Cost Antenna Traps
EA4EOZ, an amateur radio electronic enthusiast: A 50 MHz trap