Establishing a high-frequency dielectric measurements service at the national bureau of standards

To meet its own needs and those of other Government agencies, and to fulfill its normal function of providing standards, the National Bureau of Standards is in the process of obtaining facilities for making precision dielectric measurements in the 10 kc to 300 Mc frequency range. The work described in this paper is that of the High-Frequency Standards Section of the Bureau's Central Radio Propagation Laboratory. There are other groups at the Bureau actively engaged in dielectric measurements above and below this frequency range. The apparatus used by the various groups permits overlapping measurements for intercomparison.