FERRIS

ELECTRICAL SIGNAL GENERATORS, RADIO NOISE METERS, FIELD STRENGHT METERS, POWER PACKS FORMING PART OF SIGNAL GENERATORS AND RADIO NOISE AND FIELD STRENGHT METERS, DUMMY ANTENNAS, VOLTAGE MULTIPLIERS, RADIO SIGNAL CALIBRATORS, EXPLORING PRODS AND PROBE CALIBRATION COILS, TERMINATION UNITS CONSISTING OF ATTENUATORS AND INDICATORS FOR TESTING RADIO RECEIVERS OR THE LIKE, COMBINED PICK-UP LOOP TUNERS AND AMPLIFIERS FOR FIELD STRENGTH MEASUREMENT, AMPLIFIERS FORMING PART OF MEASURING AND TESTING INSTRUMENTS, SLOTTED MEASURING LINES, AND PARTS THEREOF