Are you saying I can run 15 KW PEP in West Memphis AR which is west of the MS river and only 1.5 KW in Memphis, TN which is east of the MS river? 73 Bob, K4TAX K3S s/n 10,163 That's why, for example, the FCC licenses 10 dB greater TX power west of the MS river. Higher TX power also helps for moonbounce and meteor scatter.