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The SM-20M3G-4X4 from Planar Monolithics Industries is a Switch Matrix with Frequency 0.02 to 3 GHz, Insertion Loss 10 dB, Power 0.1 W, 20 dBm, Isolation 60 dB. More details for SM-20M3G-4X4 can be seen below.
4 x 256 Switch Matrix from 900 to 2500 MHz
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