I want to eventually go to the protractor system, but in the mean time I have been doing this successfully:
With the antennae in the fully raised position, but not moving it from the "0" position, I do a channel search with the TV. I then move the antennae 120°, and do an "add channel" search. I then move the antennae 120° the opposite way from "0", and again do an "add channel" search.
If I am going to be at that destination for a couple of days, I right down the channel number, network affiliation, and where on the antennae dial that station is located for quick reference.
Chap , DW Joy, and Fur Baby Sango
2017 F350 Lariat CCSB, SRW, 4x4, 6.7 PS
2017 Grand Design Reflection 337RLS