00382    a2200133   4500020001800000082001700018100002200035245005100057250000900108260003600117300001700153650004500170650003300215  a9780073107042  a621.382bFRE  aFrenzel, Louis E.  aPrinciples of electronic communication systems  a3rd.  aBostonbMcGraw-Hillc2008g2008  a930p.c28cm.  aWIRELESS COMMUNICATION SYSTEMS-TEXTBOOKS  aTELECOMMUNICATIONS-TEXTBOOKS