Swap Out The Subaru XM Antenna For An NMO Antenna Mount

Who needs to pay for what you can get for free? Plus gain a roof mount for the two way radio without drilling more holes. My 2014 Outback has no navigation and no Eyesight features so I'm fairly certain the shark fin on the roof is only for satellite radio. Replacing it with an NMO mount is easy and it is restorable,

To get to the fastener one has to only drop the headliner in the back. Take out two back most screws in the quarter panel trim, remove the door sill, remove the D pillar trim, pull down on the headliner. The fin's single nut is within reach with an adjustable wrench. Unplug the coax from the sponge wrapped connector and pull up and out.

Outback NMO

 

You get a square cutout that is about 1/2 an inch. You could ream it out for a 3/4 inch NMO mount but I like to make the mod reversible.

Outback NMO

I used a 3/8 inch NMO mount. It fits perfect.

Outback NMO

Position the teeth on the underside and hand tighten the brass cap. After you are ok with the sitiuation tighten the cap with that Oklahoma socket set. Be careful of the O ring so that it seals evenly,

Outback NMO

This part of the 2 way install is done. I capped it off to weatherproof for the time being.

Outback NMO

Coax routing went around the base of the quarter panel trim, under the seatback, under the back seat and then under the carpet to an opening for a front seat bolt.

Outback NMO

Coax continues under the back seat (bottom cushion snaps off with a pull), pop off a couple of those plastic fasteners and fish the coax to a seat bracket opening. Solder a PL259 to it.

Radio install continues in the project page.