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The 623 from Narda Microwave is a Waveguide to Coax Adapter with Frequency 7.05 to 10 GHz, Power 200 W, Peak Power 3 KW, Weight 0.21 Kg. More details for 623 can be seen below.
1.85mm, 2.4mm and 2.92mm Waveguide to Coax Adapters Operating Up to 65GHz
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