Many of the new models have an antennae that does not crank up and down. If there is no crank directly under the antennae, then that is what you probably have.
Generally, there are no specific owners manual for a trailer.....just generic 1s.
BTW, welcome to the forum !!
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Chap , DW Joy, and Fur Baby Sango
2017 F350 Lariat CCSB, SRW, 4x4, 6.7 PS
2017 Grand Design Reflection 337RLS