On the other hand the connections can be checked with a meter if one is on hand.
Coax is just two wires of a different form than we often think about, so we can do a check for all the things which a normal wire has like open, grounds or shorts in much the same way.
It will likely take two people to check from one end to the other if we can't see the meter from that end!
To test for a full wire connection (continuity) put a meter set to read resistance on one wire like the center conductor with the other meter lead on ground, while somebody puts ground on and off the center wire at the fra end, so that you should see a ground going on and off at the meter.
Check for continuity on the second wire ( outer mesh) the same way or by putting the meter on both inner and outer and having the far end touch the two wires together.
While about it, check for a short circuit between the two wires, by looking for no reading on the ohms scale while the far end is open.
Your coax wiring, depending on options you have should be here:
https://www.winnebagoind.com/diagram/2017/000177027.pdf
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