TY - GEN AU - Robert T Adair C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.76-833 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - A precision 30 MHz waveguide-below-cutoff attenuator with an absolute electronic readout ::NBS Model XII ER -