Digital Tests on NB Transponder

  • From another board...

    No dish antenna...


    Graham Mar 7 #50885

    New test with Bi-quad loop and 150 mW carrier power ..


    Rx still via web sdr


    14:27 1296963 EA5DOM de F1ABL Op05 478 mi -22 dB F:1% in JN24OF SWL SDRWEB QO100 1339,8 Hz with 0.15w + NO DISH - Biquad HPol


    interestingly , op05 is decoding down to -23 dB s/n ,

    2019-03-07 13:44:35 EA5DOM IM98WN F1ABL JN24OF 771 1.296.964 -23 Op05__~23dB

    73-G

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    Graham Mar 7 #50887

    Group of stations monitoring the down link , for opera op05 ,


    to use the sat link , with web-sdr-rx only requirement is the ability to

    on/off key a carrier on 2.4 GHz , power and Ae requirements appear to be minimal


    73-G


    PA1SDB: reports using up link qrg, 2.400,1012960 GHz


    downlink at 10.489,603500 GHz



    24 hours snap shot , sat users


    2019-03-07 17:56:36 PA3ARK JO33LF PA0KNW JO33MD 11 1.296.600 -8 Op05_||||||||||||||||||||||||_~8dB

    2019-03-07 13:02:35 PA3ARK JO33LF PA3ARK JO33LF 0 1.296.600 0 Op05_||||||||||||||||||||||||||||||||||||||_~1dB

    2019-03-07 09:31:58 EA5DOM IM98WN F1ABL JN24OF 771 1.296.964 -18 Op05_||_~19dB

    2019-03-07 09:31:57 EA5DOM IM98WN PA0KNW JO33MD 1.712 1.296.600 -21 Op05__~21dB

    2019-03-06 11:16:14 PA1SDB JO33KH PA0KNW JO33MD 22 1.296.600 -8 Op05_||||||||||||||||||||||||_~8dB

    2019-03-06 09:24:46 PA1SDB JO33KH F1ABL JN24OF 1.017 1.296.964 -3 Op05_||||||||||||||||||||||||||||||||_~4dB


  • Now with the new band plan, the FT8 / FT4 activity will also have to move.


    I set: FT8 / FT4 = .540 "Dail Freq"


    I made over 65 qso's in FT8/FT4 mode so far on QO-100 and I enjoyed every qso.

    It appears that FT4 is better because quite some stations shift in frequency during the transmission, making FT8 difficult to decode. Signals are not weak and that extra weak signal sensitivity is not necessary.


    73 Rob PE1ITR