PRD

ELECTRICAL APPARATUS, MACHINES AND SUPPLIES FOR THE TRANSMISSION AND CONTROL OF HIGH FREQUENCY SIGNALS-NAMELY, AMPLIFIERS, POWER SUPPLIES, GENERATORS, NOISE GENERATORS, IMPEDANCE TRANSFORMERS, ADAPTORS, OSCILLATORS, OSCILLATOR CAVITIES, HARMONIC GENERATORS, PROGRAMMABLE GENERATORS, COUPLERS, MICROWAVE RECEIVERS, ISOLATORS, WAVEGUIDE BENDS AND T'S, THERMISTORS, WAVEGUIDE SWITCHES, CRYSTAL SWITCHES, WAVEGUIDE STANDS AND ANTENNAS, MICROWAVE ATTENUATORS, TERMINATION LOADS, SLIDING SHORTS, SLOTTED LINES AND PROBE CARRIAGES

[MEASURING AND SCIENTIFIC APPLIANCES RELATING TO HIGH FREQUENCY WAVES-NAMELY, RATIOMETERS, FREQUENCY METERS, POWER METERS, MICROWAVE EDUCATIONAL KITS TO TEACH MICROWAVE THEORY AND TECHNIQUES (SAID KITS INCLUDING A KLYSTRON POWER SUPPLY, A CAVITY FREQUENCY METER AND A TEACHING MANUAL), SLOTTED LINE DETECTORS, DETECTORS, BOLOMETER MOUNTS, DRY CALORIMETERS, LASER BOLOMETERS, LASER CALORIMETERS, PROGRAMMABLE METERS, POWER MONITORS, SPECTRUM ANALYZERS, ELECTRONIC DEVICES FOR TESTING ELECTRICAL PARAMETERS, ECHO BOXES, AND INTERFERENCE MEASURING SETS]