GPSDO für zwei Frequenzen gleichzeitig zwischen 1-100MHz.

  • Tony and what does the signal from the GPSDO generator at 10GHz look like?
    1) Set the frequency on the GPSDO: 25,780.770MHz
    2) Connect the GPSDO generator signal (25,780.770MHz) to the LNB
    3) Connect the LNB to the QO-100 and to the TRX at 435,000.000MHz
    Will the tone of morse signal be clear (ta ti ti ta)?


    73

    Artur

    hello I have not tried 10ghz but would like the wash on 10g with Arduino nano I can not find any project I do not love programming, but some OM can make serket. to do some tests

    73 ik1hgi Tony

  • Tony and what does the signal from the GPSDO generator at 10GHz look like?
    1) Set the frequency on the GPSDO: 25,780.770MHz
    2) Connect the GPSDO generator signal (25,780.770MHz) to the LNB
    3) Connect the LNB to the QO-100 and to the TRX at 435,000.000MHz
    Will the tone of morse signal be clear (ta ti ti ta)?


    73

    Artur

    I tried this long time ago: Remove the built in 25MHz oscillator from the Si5351 breakout board, feed in 10MHz instead. Program the breakout board to output 24 or 25MHz. Works fine as long the multipliers and dividers are integer. No Jitter on the downlink. Program the board to put out odd frequencies like 25.780.770 results in lots of jitter and multiple signals on the downlink , so is not usable.

  • Hi, I will also follow your project.

    as many allready mentioned is de Si5351 not ideal..

    This was my project 1,5 years ago.

    I never solved this problem.

    If you manage a receiption of the beacon with the si5351 as a LO. please inform me...


    I still have the complete GPSDO with the si chip on shelf, waiting for a better time..


    Benno