Update: Took the router off the wall and set it flat on a stand next to the wall mounted location. Back downstairs the connection speed jumped to 300Mbps. So I'm assuming that these routers perform better when sitting horizontal than vertical.
Will make a "shelf mount" that supports the router flat in the same location. Basically, just have to make a small shelf, about 8x8". Should not be a problem.
Also checked video playback via the Wi Fi. A 1080p MOV file played smooth a 300Mbps connection. It would play using the old router with a 54Mbps WI FI, but dropped lots of frames and was very jerky. The 300 WI Fi router works much better --
Internet: Sprint Wireless, CellAntenna CAY1912 Panel antenna, Cyfre CA-819 amp, Linksys WRT54G3G-ST/ EA2700 routers, Pantech PX-500 data card. Storage: Windows Home Server 2011