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Dual band 2/0.7 meters SDR tranceiver.

Discussion in 'Homebrew and Kit Projects' started by CO8TW, Apr 1, 2012.

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  1. CO8TW

    CO8TW Ham Member QRZ Page

    Hello Hams.

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

    Thanks in advance.

    Juan Carlos, CO8TW.
     
  2. G4SRN

    G4SRN Ham Member QRZ Page

    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. KB4QAA

    KB4QAA XML Subscriber QRZ Page

    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.
     
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