WP 11121

All site PEM microphones have been upgraded with a CCLD conditioning amplifier and pre-polarized microphone. New microphones are now powered off single power supplies set to 5V. Microphones were placed in same locations as old microphones.

The old H2 output HAM7 microphone is temporarily installed in the bier garden PEM area. Old HAM7 chamber has been removed. PEM group can decide on new location for microphone. Adrian Helmling-Cornell verified all microphones are working.

F. Clara, A. Helmling-Cornell