... of contactless card; the cards from different suppliers. The RF protocol is complex. But the designer combined some frequent used ... and stability. The module and antenna is linked by 50ohm coaxial line. The performance is good, though the wire can ... .56MHz • Antenna connection: by 50ohm coaxial line, (recommend 60cm, Max. 10 meters), due to order • RF standard: ISO14443A, ISO14443B, ISO15693 • Operating ...