Topband: Hygain 18HT feed question

[kg9hfrank at gmail.com]

I cross posted this in he QRP but then it dawned on me you folks may have a better insight to this question.

I finally snagged my dream antenna, a Hygain 18HT!
Yes after almost 50 years…

So here is the question….

Should I feed the base with:
-75-ohm coaxial cable (I can get some of that easily to bury about 100’ from the house?
-use an auto-tuner at the base or feed it like they say and feed it with 50-ohm also 100’ from the house.

Go….

De KG9H