Once again, an amateur radio antenna.
This is an antenna for 145MHz.
Since it's a VHF band antenna, its size and shape are similar to a television antenna.
It is designed to allow direct connection of a coaxial cable.
To save on the parts needed to mount the antenna on the roof, I came up with the idea of inserting PVC pipes into the elements and securing them.
This is a 5-element Yagi antenna, and since the elements are close to the center of gravity, it seems like this method of mounting should work.
By the way, the outside temperature is 39 degrees.
The sun is slowly burning my skin.
This is a very simple method, but it seems that the matching adjustments will allow it to become somewhat practical.
The design was completed quickly thanks to the MMANA software and the SWR ANALYZER MFJ-259B measuring instrument.