Back in the 80s, I took an Antenna Theory EE Course in college (Texas A&M), and our final project was "design and build an antenna and feed-line to receive Channel 15 to a 300 Ohm termination". Part was researching the antenna types, but we also had to predict the gain of the antenna, and build it, out of what ever material we so desired. After we turned in our papers, we went to the roof of the engineering building and tested our antennas against a folded dipole (reference) for gain and directionality. Granted we could see the channel 15 (KAMU) transmitter from the antenna, but at the time it didn't broadcast a signal that reached outside of Bryan/College Station (the hamsters could only run so fast :

). Being the typical EE student, I waited until the night before (a Sunday night, of course) to finish building. It was an amazing night for DXing. From my second floor balcony, I could pick up something on nearly every UHF channel from 14 to about 45 (from there the gain died off, but the loop antenna on the TV was picking up Channel 67 in Alvin, TX clear as a bell.
A few things I recalled were 3 Channel 25s (depending on direction): KAVU/Victoria, KXXV/Waco, and WXXV/Gulfport, MS, WFTS/28 Tampa, WBBH 20 Fort Myers fighting over KTXH 20 Houston, plus cities all along the Gulf Coast.
I got a B+ on the paper; B for using a Yagi array (nearly everyone used this, since the folded element nearly perfectly matched the 300 Ohm tranmission line/termination...), the + for recording all of the DXing that evening. One of the most fun classes I took - lots of design and construction (strip-line microwave filters, antennas, transmission line design...)
Jim