Why 50 ohm, not 75 ohm?

Question

Viswanathan Balaraman · Accepted Answer

30 ohms gives better power handling, 75 ohms gives low insertion loss, so 50 ohms is the trade off between the power handling and low insertion loss. It is globally accepted to use connector, cables and equipment for 50 ohms.

Omar Baroudi · Answer

50 ohms performs better (lower loss than 75 ohms), one advantage of 75 ohms is size (cable and connectors are smaller than 50 ohms)

Omar · Answer

Please disregard prior answer, best insertion loss case is at 75 ohms, 50 ohms provides the best compromise between low loss and power handling as mentioned above.

Nagarjun Bhat · Answer

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