Construction of a 40-meter coaxial trap

 
 
 

40-meter trap schematic.
 

 

Overall length of the coax is 70 inches at the beginning, prepare 3 inches at each end.

 

 

 

Pipe lenght is 2 3/8"   Trap completed   About 6$ per trap.
         
     
Inside view   Grid Dip shows 7.1 Mhz