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The 503A from L-3 Narda-MITEQ is a RF Detector with Frequency 0.01 to 18.0 GHz, Voltage Sensitivity 0.5 mV/uW, Input Power 100 mW, VSWR < 1.6:1. Tags: Zero Bias Schottky Detector. More details for 503A can be seen below.
Threshold Detector from 2 GHz to 18 GHz
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