Reply to thread

sob, you could try tuning the driven elements for the pdl2 first without reflector/directors. When you got that close, then start adding the other quad elements, one at a time, and retuning as necessary.

 

I had a local buddy in the 80's that made a four element quad (not a quagi) using a PDL2 driven element setup and it worked very well. He tried to build it all at once by himself. He took over a year at the effort, but it would not work until he paid a local communications engineer with the Harris County Sheriff's office to set it up right. As far as I know the driven emement was not modified in any way different than the PDL2. This engineer rebuilt the beam just like I described above, get the driven element to tune, and then add the reflector first to tune, and then add the two directors, one at a time, tuning as he went.