For a list of all currently documented Ralink chipsets with specifications, see Ralink.
Wireless-G Long Range USB Adapter with Antenna
"05-01G0772-00" is silkscreened on the board in the FCC photos.
There are (presuambly) additional models of UA-854, CUA-854L and UA-854L using this FCC ID. The only difference seems to be the included antenna.