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HP476A Bolometer Mount - Vintage 10 Mhz - 1 Ghz
Product Description
HP476A Universal Bolometer Mount (<1952 - ). This unit is used to measure power over the 10 MHz to 1 GHz frequency range using four 1/100 ampere bolometer elements (200 Ohms each) connected in a series/parallel network so that the RF source saw 50 Ohms but the power meter saw 200 Ohms.