It appears that the attenuator levels for ant 14 D (T304) at X-band are not setting up correctly for optimum RMS and T5 levels. Several modules have been swapped and/or repaired in this antenna so it is possible that the LUT needs to be updated. By manually changing the attenuator level by about 3 dB, IF-D comes into line with the other IFs (at X-band). Rob