Linksys Wireless Adapters :: WET610N Signal Strength

I have a WET610N on my network with very little signal strength. My set up is:
 
Router E3000
48 ' (48 feet) to 
WET610N 
 
The WET610N is on 5Ghz N, and is the only device at Ghz, and indeed the only wireless device during testing.
 
The use for the adaptor is to connect an Xbox 360 as a MCE for Video streaming.It is unusable, with unwatchable lags and intermittent failures.The 'Network Performance Monitor" doesn't read in mb/s, but essentially I get about 1 or 2 'bars', well under the acceptable for Standard def reading.
 
zInterestingly, when I bring the device within 3 feet of the router, I get great speeds (30 Mb/s down),  but the bit rate reading in the status screen reads lower than the below reading.
 
Below is at the 45 foot mark->
 
Link Status:Connected  MAC Address:68:7F:74xxxx:31  Network Name (SSID):sx  BSSID:98:FC:11:xxxx9:94  Radio Band:5 GHz  Channel Width:20 MHz  Wide Channel:N/A  Standard Channel:36  Bit Rate:43.3Mbps  Signal:10%  Security:WPA2 Personal