JI1FGX/DU9 Mindanao Diary Antenna on 145MHz(2009/07/19)
Antenna for 145 MHz. Because it is a VHF antenna, its size and shape are similar to a TV antenna
Direct connection of coaxial cables is possible.
To save on parts to mount the antenna on the roof, I thought of inserting a PVC pipe into the element and fixing it in place.
This is a 5-element yagi antenna, but the elements are near the center of gravity, so it looks like it can be fixed in this way
By the way, the temperature outside is 39 degrees. The sun will burn your skin slowly.
This is a simple method, but it seems to be able to get matching adjustments and to be within the practical range. The design was completed in a short time thanks to the software MMANA and the SWR ANALYZER MFJ-259B measuring instrument.