Repairing an old Rooftop Antenna

[Popester]

That’s a pretty nice rig. Tripod adds stability. Just make sure where the hardware that bolts the tripod has sealant on them or you could have leaks into the house.
I’m surprised as high as it is that they didn’t attach guy wires to secure it a bit better. I think what you’re looking for is called a matching transformer that goes from 300 ohm to 75 ohm. 300 was the standard back when flat twinlead was used and 75 was the impedance on coaxial cable. Should still be able to get this without a problem online.