I prefer a tuned dipole for TV TX applications. This Shango video explains easily making them.
https://m.youtube.com/watch?v=z4dhRt7tmd4
You don't need the fancy expensive SWR meter he uses. What he doesn't tell you is that the formulas he uses are for 50ohm impedance not 75ohm and that the trimming he does to retune its impedance scales linearly. Back in my college antennas elective I learned that the same percentage of length used to tune from 50 to 75 ohm will work on any frequency. So I calculate the percentage of length he cut off and apply that percentage to my antenna to tune it. Has worked great for me on CH2-13. UHF I tend to use factory made bowtie antennas, but I've only done ATSC UHF transmission seriously so far (I kinda want to get a permanent analogy TX going soon).
Phills old radios has a good write up on settings up a transmitter (good hardware to use, avoiding interfering with DTV stations, etc).
https://www.antiqueradio.org/HomeTVTransmitter.htm
I've written this info here before probably more than 10x in several older threads....