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    UHF-RFID-UNIT-JRD-4035 effective distance

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    • P
      PAOPAO
      last edited by

      Web page shows
      "the transmission power of 100mW can reach the effective distance of more than 1.5M."

      https://shop.m5stack.com/products/uhf-rfid-unit-jrd-4035?variant=39375750824108

      But my JRD-4035 effective distance is 0.4M

      If possible , could you let me know why JRD-4035 is low performance ?

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      • M
        M5Stack_AG @PAOPAO
        last edited by

        @PAOPAO Hi there! The required configuration is 920MHZ so the antenna can work the best

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        • P
          PAOPAO @M5Stack_AG
          last edited by

          @m5stack_ag san,
          Thank you for your message!
          Could you let me know how to set 920MHZ ?

          By the way, Specification metal IC Tag of mine is "Up to 4.2M - (US) 902-928MHz, on metal"

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          • M
            M5Stack_AG @PAOPAO
            last edited by M5Stack_AG

            @paopao Hi! If using UIFlow, then this is it, if it‘s Arduino. Serial port sending commands
            or use API, then CH_index = 1
            0_1654054725279_0ec00c90-ec5d-4409-94fc-8dd08c895076-772b8705d595ffaaf664b365dfa2283.png

            0_1654054732810_ba3533da-f619-4abc-911a-0eec1f118a04-7a340fb489da51d7a3242baec51cccb.png

            https://github.com/m5stack/M5Stack/blob/master/examples/Unit/UHF_RFID_JRD4035/RFID_command.cpp

            0_1654054741933_08d5a35d-3ca2-4e2f-bfb2-00ff3e69579b-4bca5f4ba3a089a03c27cc592164b60.png

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