TY - RPRT TI - Tests of the standard (30 hz) NCER FM multiplex telemetry system, augmented by two timing channels and a compensation reference signal, used to record multiplexed seismic network data on magnetic tape AU - Jerry P. Eaton PY - 1976 DO - 10.3133/ofr76374 UR - https://pubs.usgs.gov/publication/ofr76374 ID - ofr76374 ER -