SAT Controller SDR Nano

  • For fast PTT detection the signal TX GND from ACC socket can be connected to CTS input of the USB/serial adapter (because via serial CAT command there will be some delay):

    If the SCU-17 sound card interface is used for CAT then there is a small modification of the CT-62 (RS232/CAT) cable required. For this cut the track on PCB between RTS and CTS pins and solder the emitter of a PNP transistor to the RTS pin and the collector to the CTS pin. Connect the base via a 4k7 resistor to TX GND signal of ACC socket:

    Remark: The original cable can not be used for this because there is no wire connected to TX GND. It has to be replaced.

  • Hi Frank,

    thank you for that lovely project :-)

    Could you please explain with a few words why you are using two RTL sticks and not just one?

    Is that neccessary for the beacon correction only?

    I am using almost a GPSDO stabilized LNB.

    When can we expect the image for the PI4 ?

    73, Mike


  • Hello to all,

    Question: Does anybody has running the "Drift correction" properly?

    Today 2 pcs. of NooElec Nano 3 arrive and this was last idea i have what could be the problem. But no success.

    Again: I lock system to Master-beacon. Fine.

    Then i tune to CW-beacon in audio window to 1,5KHz.

    LNB LO corrects automatily according drift but the tuned signal of CW-beacon is not corrected.

    This means it drifts away from 1,5KHz in audio window.

    Who has any idea what the problem can be?


    Volker, DH2VH