TY - GEN AU - R S Kirby AU - J W Herstreit AU - K A Norton C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1951-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CRPL.6-3 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1951 TI - Service range for air-to-ground communications at frequencies above 50 mc: ER -