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  • 25/07/2020

    I bought two of these to test. Here are my first basic results: 1) Operation frequency is 133.3KHz 2) Mode is slow FSK, when connected using AC (50Hz) I see about 50 Baud speed, and when no AC it is a bit slower, about 40 Baud so large amount of data will take a long time, (5 seconds to send 5 Ascii Bytes) 3) Output power is about 5 V p-p, not sine wave, it is quite high harmonics 4) I used an AM radio to monitor the signal on 792KHz harmonic 5) Range I did not test. 6) Take care not to leave data input/output floating, causes unstable operation.

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  • 02/04/2021

    Received in a short time! Worling as expected.

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  • 14/07/2019

    product is good ,but very few support site are available to exprore that product and its application.

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