IEC 60169-21:1985/AMD1:1996 : Title: Amendment 1 - Radio-frequency connectors. Part 21: Two types of radio-frequency connectors with inner diameter of outer conductor 9.5 mm (0.374 in) with different versions of screw coupling - Characteristic impedance 50 ohms (Types SC-A and SC-B) Pages: 3 Year: Publisher: International Electrotechnical Commission Availability: Within 1-2 working days
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