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
coax trap calculator
SM2YER Goran's Homepage
Antenna trap kit building instructions - HF kits
Tr-1000-28.5 hari pair of 10m traps 1000w cw/ssb - Radioworld UK
Antenna Traps—A Way to Cope With Limited Space
G4NSJ – Aerial antenna traps HF | Radio Workshop
Amateur Radio - Multi-band Trap Dipole Antenna
Buy Antenna Traps 7.1 MHz, 100 Watts W3DZZ - Radio Experimenter's Corner | Amateur Radio Accessories and Equipment