It looks to be a standard SMA type coaxial connector -
Unless it's the same size as a satellite TV receiver connector in which case it is an 'F' type. I think it's an SMA from the size in the image and that it's threaded.
As supplied it will probably be crimped to the end so you will need a new SMA/'F' male connector
and be able to crimp it on.
You need to check the coax type. I think it's RG178 (or equivalent) which is 2.8mm in diameter.
Best thing is probably to take it to somewhere like Maplin, or even better a local RS Components counter, or if you have one locally an amateur radio shop and show them. They'll confirm whether SMA/F and might even fit it for you.

. If none locally them you can get the connector and tool from Amazon, RS Components (pricy) or Farnell.
Richard