Hi Darren,
Three options for you:
On Sat, Jan 31, 2015 at 3:34 PM, Darren Moss
I am looking for suggestions on a decent (business grade) router with 3G capability an external antenna connection.
At each site, the equipment sits in a rack, inside a hut and signal strength is reasonable (3/5).
I've had good success with Netcomm units. This one might be appropriate if you have a rack shelf. They're not cheap though: http://www.netcommwireless.com/product/4g/ntc-140w Two years ago I did broadband drive testing with a trunk-mounted Netcomm unit and was able to keep data at megabits per second in places my phone had no signal at all. I have a fair number of Robustel R3000 units deployed at remote sites for SCADA, OOB network management, and weather monitoring: http://robustel.com/products/GoRugged/dual_sim_2G_GPRS_3G_UMTS_4G_LTE_VPN_Ro... In the case of the Netcomm units they're on a virtual private APN, and I push a /24 of my own 1918 address space to each. And the dual-SIM thing really works, and can be a lifesaver. I also have a pair of Mikrotiks with the Sierra LTE mini-pcie card as sold by Go Wifi, they seem to work but I have not deployed them yet so I can't recommend. http://www.gowifi.co.nz/access-points-802.11/outdoor-wireless-access-points/... Cheers, Jon