Zumo User Forums

Just been wondering about fitting an external antenna on my 660.

I discovered the socket on the side after XX years owning it.

I had expected to need to drill holes in the case and solder on a BNC pigtail.. but on preparing to open it up I found the socket.

I see MCX-BNC Adapters, but the pictures make me think that is the wrong plug for that socket.

Anyone know for sure ?

I have one of those external antennas here (somewhere). I'll look it out and see if I can shed any light on the subject.
Do you already have an external antenna to use on your Z660?

Thank you

Yes, I have various GPS external antennas, all with BNC fittings

The MCX type adapters I have seen look more like the mini ones that are directly on the PCB.
The one on the side looks different.

Photos of Garmin Antenna and plug.

Thank you

yes it does look like an MCX


https://en.wikipedia.org/wiki/MCX_connector