Yes indeed, as I mentioned I also used the W3IWI "BASIC Orbits" program and modified it a lot, mainly to change it from a "prediction" type program into a "continuous tracking" program. I have made a version that showed the position of 9 satellites on screen simultaneously and then could track any one of them. Even automatically, so I could track a number of packet satellites using a priority list.
Indeed a lot of typing from listings was going on back then, although I think I have not typed this particular program but received it on cassette from Eindhoven.
I bought my TRS-80 in 1980 (easy to remember) but after initially starting with cassette tape (I even wrote an alternative loader that used a higher baudrate) I soon used floppies. My friends at the local club had systems with floppies and it was so much more convenient. Luckily I had another friend who had surplus floppy drives and diskettes and the only problem was they were 8". So I made a floppy controller that could support 8" (double the clock of 5") and used them. As I also needed a 5" drive to be able to swap programs with friends, I bought one Teac FD-55B. I still have the bill. Over 1000 guilders (or about 475 euro) in that time. But ready made drives with powersupply and enclosure from Tandy were about 1700 guilders. and those were single-sided while mine was double-sided. Well