Yes I got the photos you sent. It's a Log-Yagi with rear half being a Dual-Boom LPDA and front half being a set of Yagi Directors. And isn't it missing one or more Elements???
It would help if you could add THREE MORE photos (Overlapping showing Rear, Middle and Front), shot mostly from ABOVE, but offset a bit to show the 3-D Structures. I especially need to see more detail around the Balun Feedpoint. Since it is NOT a pure LPDA, the LPCAD34 runs are no longer applicable.
We also need a LIST of (X-Coordinate) Measurements for the placement of Elements along the Boom [Center of Rod].
And a LIST of (Y-Coordinate) Measurements for Direction (+/- Y-Coordinate) and LENGTH of each Element Rod.
For the Forward Yagi Directors, this can be a simple Tip-to-Tip Measurement [or Boom Centerline to Tip].
However, for each of the LPDA (Half) Elements, we need the Length of the Rod, as well as how much the SHORT End extends beyond the Centerline of the Boom [Rods attach to the TOP of the Boom].
Also need to know Rod Diameters and Boom Dimensions.
Soonish, I'll post your photos to a new Album on my Antenna Analysis Website, so we can all see them....
Last edited by holl_ands; 2017-10-20 at 07:41 AM.