Well I dunno, I dont think I would do it. If it is rohn 25 sections they weigh 45 lbs each, and are pretty strong. if there only 3 sectons and a mast/rotator? and then a large TV antenna, it all adds up and the lever just gets longer. Where were you planning on fastening to the tower? Cause if near the bottom that puts you at a worse leverage place, but I cannot see how you could tilt the tower down if you fastened up even 3 or 4 feet without the bottom of the tower hitting the tractor before you got it all the way down. It would be a lot safer to find a local "Ham" with a gin pole and a climbing belt and rope to take the sections down carefully, I would think a $100 bill for 20 minutes of work would be about right. If you could find one. My tower is 40 foot, and it tilts over, but there is a pulley at 15 feet on a 3 inch pipe in concrete with the winch down at 5 foot. Of course there is a tilt over base on the bottom. your tower if Rohn 25 sections will definately withstand being tilted over and not fold up in the middle (if all is well, no rusted out sections, or freeze split), But I am thinking that is a lot of leverage if you fasten near the bottom. And what is your backup/safety plan if it all goes to crap? Also dont think about climbing it yourself without the proper safety belt and the experience. You will need the gin pole too. and a 100 foot rope. If you dont know what a gin pole is, well, you dont need to be on the tower. Sorry to be such a debbie downer, but I think there is some risk here.
James K0UA