RAL_RF2
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]);
rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2);
rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2);
rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2);
rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2);
ural_rf_write(sc, RAL_RF2, ural_rf2522_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2523_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2524_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2525_hi_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2525_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2525e_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2526_hi_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf2526_r2[chan - 1]);
ural_rf_write(sc, RAL_RF2, ural_rf5222[i].r2);