A cricket crosswave router
It looks like that only supports up to 802.11g, which apparently broadcast max of 54 Mbps. Right now it's probably in 802.11b mode, which will limit you to 11 Mbps. You'll have to see if you can get it in to 802.11g mode if you really care about your LAN transfer rate.
That being said, from my understanding it won't make any difference because you appear to be using 3G. You won't get much more than 3 Mpbs on a 3G connection, and from my personal experience 3G hotspots will often be very unreliable. I may be wrong, but if you're only getting 3 Mpbs from your router, it doesn't matter how fast your wireless is as long as it's more than 3 Mbps. It's like connecting a fire hose onto the end of a garden hose, sure you have a bigger hose but you won't get any more water coming out of it.