2.4 GHz white Phantom low profile transit antenna. NMO mount (requires NMO permanent or magnetic mount). 3 dBi gain. Housed in rugged durable radome.

Link to the magnetic NMO mount: http://www.connextech.co.uk/nmo-mini-mag-mount-sma-533-p.asp

Link to the permanent NMO mount: http://www.connextech.co.uk/nmo-permanent-mount-549-p.asp

Clearance price.