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Thread: Dual band 2/0.7 meters SDR tranceiver.

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  1. Default Dual band 2/0.7 meters SDR tranceiver.

    Hello Hams.

    Am looking for electric diagram of an 145 to 437 mhz SDR transceiver.

    Thanks in advance.

    Juan Carlos, CO8TW.

  2. #2
    Join Date
    Jan 2012
    Location
    UNITED KINGDOM.
    Posts
    23

    Default

    Hello Juan,
    Please can you supply all information & the model of the SDR tranceiver you require, I have many circuit diagrams in my filing cabinet that I can send to yourself, my private E-mail is on my page for you to reply. Best Regards, Dave.

  3. #3
    Join Date
    Jan 2008
    Location
    St. Mary's County Md since 2000
    Posts
    7,929

    Default

    Juan,
    I have not seen any SDR transceivers that operate at VHF/UHF yet.

    One reason is that the Analog to Digital Converter (ADC) technology for direct conversion is really not yet fast enough to handle those frequencies (remember Nyquist sampling theorem N (or frequency) x 2) as minimum. It is easier to use a transverter to convert the signal down to HF and use existing SDR radios.
    QRZed: "Professional Grade Paranoia From Amateurs"

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