Answer / sunny chahar

mixers are used for converting rf signals to if signals .

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Describe circular polarization?

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Describe an impedance matching circuit?

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I am working on Nortel Meridian 81C PBX,Passport,Symposium Can anyone plese tell me website name on which I can get more information about this equipments

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What are mixers used for?

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8=56 7=42 6=30 5=20 3=?

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Define Thermal impedance?

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