Topband: Preamp for 160

[AD5VJ Bob]

I finally got a preamp for 160. It is a AMECO PLF-2 (20db). 

The only problem I see is that it has RCA jacks in the back for the antenna feedline and the line to the input of my FT-1000MP MKV.
Will these connector types cause allot of loss to the incoming signal or do I just solder on the coax as though they were pl-259's



   73 fer nw es gud DX,
QSL VIA: LotW, BUR, e-QSL
Bob AD5VJ
http://www.ad5vj.com/
Old Calls WB5ZQU, WY5L/KH3, KE5CTY, N5IET