Saturday, April 27, 2024

Anyone Can Advise About OA70 Diode?

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  • June 22, 2023 at 1:27 pm #121549
    EFY Bureau
    Keymaster

    Question by DEEHOK: Hi, I had used OA70 diode with an ear piece of telephone operator working at manual telephone exchange during 1970, one end of ear piece used to put in negative point of electric plug & other end used to just touch with finger! It was working good but within 5km area of radio station.

    Anyone can advise about OA70, please?

    Thanks

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