I have recently purchased a dual band router...Is it possible to adapt my A500 to receive the 5ghz signal? Thanks... Steve
No. The radio is physically not capable. Any proper router should sense this and service the tablet on 2.4 band.
Your router is capable of 2.4GHz with 14 channels - for your tablet. Leave the 5GHz for other devices. Unless you want to solder in a 5GHz radio chip - the answer is NO!