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Curves have been presented for the design and application of a sweep-type spectrum analyzer suitable for operation with random inputs. These curves show the relationship between resolution, stability, and sweep time. Qualitative rules are included for the design of the filters, as are methods of avoiding certain errors in the use of spectrum analyzers by equalization of the signal.
A re-entrant resonant cavity was constructed for measuring the breakdown strength of dielectric samples at 630 mc/sec. The cavity was tunable by means of a choke plunger to accomodate various thicknesses and permittivities of dielectric. It was also pressure tight to allow pressurizing if necessary to avoid arcing or gas breakdown around the sample. This was an unnecessary precaution, however, since...
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