4. JRD-4035 RFID UHF U107 antenna

JRD-4035 RFID UHF U107 antenna

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    Hi everybody,
    I am about to purchase JRD-4035 for and internal project within my company. I saw from previous topics that the unit works best at 920 MHz rather than 868 MHz. I wish I could have more info on the ceramic antenna that is embedded within the unit.
    Is it circularly polarized? What if I replace it with an external antenna to improve U107 capabilities in meeting 2m distance at all UHF frequencies?

    Andrea

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