You need this—traps with lower loss, higher Q, increased power-handling capability and four-band coverage!
This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps. .
Article published on QST, author and copyright Al Buxton, W8NX
available also at www.scribd.com/doc/24990781/Trap-Dipole