Posts by PA3AOD

    Sehr gut gemacht Martin danke für den Tipp mit USBIP.
    Welchen Raspberry hast du verwendet, den RPI4 oder einen älteren Typ?



    Hi all,

    My plan is to put a H265 signal on the WB of QO-100.

    I know there are small black-boxes, HDMI in and UTP out who can do the job.

    But i have already all the hardware in my computer, so why not use it.

    H264 is not the problem, can put a good picture on the satellite.

    My system:

    Hardware Intel I7 cpu with a GTX1650 video card, Adalm-Pluto

    Software Windows-10, OBS studio, OBS-VirualCamera, FFMpeg and VLC

    All software and drivers are updated to theire latest versions.

    This is my bat file:

    ffmpeg -f dshow -rtbufsize 1M -i video="OBS-Camera" -thread_queue_size 512 -f dshow -i audio="OBS-Audio"

    -vcodec hevc_nvenc -r 10 -s 1280x720 -pix_fmt yuv420p -preset slow -rc cbr -rc-lookahead 5 -b:v 90k -acodec aac

    -aac_coder twoloop -ar 48000 -ac 1 -b:a 24k -f mpegts -muxrate 160k -streamid 0:256 -streamid 1:257

    -max_delay 3000000 -pcr_period 40 -pat_period 0.4 "udp://"

    With the GTX 1650 nvidia encoder it should be possible to make H265.

    Can start a movie in OBS via VirtualCam so i can watch it in ffplay and VLC.

    It is also possible to send it via my pluto to QO-100

    Only in the following modes "-vcodec libx264, -vcodec libx265 and -vcodec H264_nvenc"

    Audio en Video are all fine.

    But now "-vcodec hevc_nvenc" can play it in ffplay, nice audio and video, but can't play it in VLC and send it to my pluto.

    In VLC only the first 1 or 2 seconds there is video than the pictures freezes, but the audio continues (with good quality)

    On my Pluto the same effect as with VLC.

    Does someone a idea to solve this nasty problem.

    After more than two weeks of testing and trying, now running out of options.

    Thanks in advance,

    Bert PA3AOD


    Machen Sie doch eine einfache HF-Sonde, damit Sie etwas Leistung messen können

    Sie können den Wert Ihres signal nicht messen, aber Sie können sehen, ob sich am Ausgang Ihres Up-converter etwas RF befindet.



    Hallo Laszio,

    Ich habe keinen Kuhne-Up-Konverter, aber vielleicht ein paar Ideen.

    Erstens gibt es HF-Leistung vom IC-9700 im TX band, gemessen?

    Gleiches gilt auch für das 2400 MHz, RF-power gemessen am ende der antennenkabel.

    ( Entschuldigung, wenn mein Deutsch nicht ganz korrekt ist )



    Hi all,

    Installation of the High Speed Modem on my 64Bit Windows-10 computer, peace of cake.

    The only problem till now is the USB-Audio connection

    My IC-9700 is in USB-D mode (Rx and Tx)

    I did a test with KG-STV that works fine, so the USB-Audio connection must be good.

    ( The IS0GRB wed-sdr did received a picture from me )

    Playing around now a couple of hours with the audio part without success.

    What do you guys have for info on the command screen (you can see my error).


    Probably i missed something about this project.

    Where can i find more info about the "high speed modem".

    I presume it's a software solution or ........

    A search on this forum did not help me.

    I found the site from DJ0ABR. ( as you can see in the top of the images a call-sign).

    But i would like to see if there are some users experience.


    Bert PA3AOD

    @Josef The problem looks to be my TS-2000 transceiver, the sensitivity is terrible the first stage amp looks broken

    But with an old transverter down to 28MHz i got some pictures.

    My first image from this session

    Wie stark ist das von der ISS empfangene Signal bei dir Josef?

    Ich kann das signal kaum hören

    Dekodieren von das Signals kann ich schon vergessen, viel zu schwach

    ( Sorry for my bad german )

    73, Bert PA3AOD