Beiträge von YL3AKC

    There are many different things:
    1) To build hardware for QO-100 ground station. (This is my favorite)

    2) Work on QO-100 transponder.

    3) Make remotely controlled station for QO-100, without public access.

    4) Work on QO-100 via internet (most boring).


    So. Goals 1-3 are great and everyone is invited to do it. This is really good for HAMs. New skills and knowledge.


    Goal 4. It is no so exited because you just connecting to website, server, etc and work. What is difference for QO-100 and other remotely controlled (HF) stations? I think that useless because you are using someone else gear while QO-100 is another push to build something yourself interact and experiment with transponder directly. That's the point.

    Small story:
    While I wait for QO-100 I had a question: so I will build stations, what next? I made some TX to transponder, test my gear, fix error and TX again. Still no QSOs. Meybe some HAMs notices two carriers (1 kHz space between them) on transponder few weeks ago (feb 16 and 23). I tested my TX (WiFi booster) linearity, freq stability and signal level. I don't feel that I need to start SSB QSOs right now. Maybe later. Now I am working on DATV RF amp stuff and trying to build ethernet controlled portable station for QO-100.

    Only class A HAMs (HAREC license) (I am class B, so no permission) have permissions to transmit with power less that 50W feeded into antenna while not making any interference (WiFi etc???).

    http://lral.lv/files/MKnot_radioamatieri.pdf on pages 17-18. fro class A.


    PS: To get class A, class B need to collect 1000 QSOs (recommended format .ADIF) to get to class A licence. I have ~600 of 1000, so soon, really soon be on QO-100.

    Class B permission on page 19. :(

    It would be nice if people can add mixer IC name together with LNB manufacturer name. Something like TFF1015 or RT320M etc because sometime LNB manufacturer name and/or product name doesn't tell much.

    In my setup (described here) i solve this problem with a function called "auto tracking". It tunes the transmitter frequency automatically depending on receiving frequency. Fine tuning of RX/TX offset is possible too.



    It would be interesting when I can try your software.

    DH2VA am I approved to be good guy instead of black hat?


    PS: my previous experience is only ~ 600 QSOs on short wave (most of them in FT8). I joined to this "club" on September 2017.

    OK, seriously. DB8TF question about "test&adjustment" "subband" window is interesting. I had an idea that I can do my freq and power calibration on CW "subband" by sending "YL3AKC TX CALIBRATION NO ANSWER PLS" in morse and then move to SSB or (my favorite) FT8 on NB transponder. What is Amsat-DL statement on calibration and additional "subband" window?

    No, no, no. It works in different way:


    1) Wait for NB transponder noise (NB transponder ON) <-- I am here :-)

    2) Aling RX antenna

    3) Wait for Upper and lower beacon

    4) Adjust and test your RX equipment

    5) Wait for NB officially open

    6) Try CW with minimum power and lidten on RX (or watch webSDR), adjust TX antenna pointing.

    7) Try test CW with minimum power and test your RX frequency. Adjust TX equipment

    8 ) Try to make QSO on CW, SSB, FT8

    9) Play with TX power

    10) DVB-S/S2 eperiments

    Don't get is literally! Check the situation. 90% of HAMs. who are interested in Es'Hail-2, are already on this forum. It is enough if members from this forum will not tweet pirate activity on twitter. That's it. It all depend on us.

    Sound's like: ignore problem and problem will gone.

    Yes, we should not publish all this kind of info on twitter, facebook, youtube etc, but it must stay on forum for internal use.

    I think, that pirate tx info can be saved so everyone can learn from it how not to be a pig and what not to do. Bad history is also a history.


    For next generation amateur transponder it is good idea somehow get location from satellite. I don't know hot it is working, but there are rumours that that on commercial DSNG uplinks, satellite operator (SES, Eutelsat) can locate transmitter within 1 KM precision.