Posts by PY2RN

    Hello,

    Thanks a lot for this information, it recognizes my SDRPlay now :)


    Just wondering if there are similar procedure for AirSpy and Lime SDRs?


    Regards,


    Ed PY2RN

    ok, i see. thank you for your answer. i don't want to open new theme for issues like nightmare stabilizing xtal in LNB or so...., but my testing time is very long and nothing to say,bacause only 1 of 6 LNB under test was working with external source.

    about PLL is regular from RDA, 3566xx.

    You should see something similar to this in the pic.

    Both X1 and X2 pins will work, input at the corner pin (of the OS) is the low sensitive but better performance, -6 to +6 dBm input, the second pin is the sensitive input (-30 to +_6 dBm) but more phase noise.

    How long time change frequency is take to final stabilization ? How is weather affect to freq stability please?

    Can you send a picture of your connection to X1/X2 ports with TCXO? Whats going with xtal, C-load and other?

    Hi, there is no final stabilization, it will keep varying freq but +/- few Hz only while external temperature goes up or down but that will not cause much trouble, mainly if you protect the LNB from the wind with a radome. Regarding x1/x2 ports it will depend on the type of PLL the LNB has but in general it will work in either one, the other goes to a 1-10nF capacitor then ground.

    @VE4SW Hi Stefan thanks for your inputs, actually FreeDV I always enjoined it testing and participating on HF/VHF etc but seems on QO-100 there are few stations already too advanced for us which are trying to learn something, so I will keep out of this mode, at least on QO-100 :) Regarding the Full Duplex operations using more than one frequency, OK it may be an advance to the hobby, but I confess i this is not a mode that raises any interest to me.


    73 de Ed PY2RN

    DJ4ZZ some people seems to be confused regarding this experiment that took place last night, I just posted in Facebook a question and I do not know why one of the participants has posted another different thread few minutes after totally ignoring my question, not sure why, then when someone answered to my question I put my opinion there, then I started to receive lots of inquires why I was thinking that etc, but in the first moment I just asked what was that what seemed a wide digital signal, that's all, I do not judge here if this was valid o not valid experiment. So good to know that it is permitted full duplex operation using different frequencies in the QO-100 transponder.


    I still think it will be a little confusing for all the stations to find out who is speaking with whom because we may use any type of off-set I believe and don't need to be so close like you guys were yesterday so in my opinion this breaches a little the amateur radio ethics, but many disagree with this as well, but it is OK we do not need to agree in everything :)

    Yesterday I was observing a signal sounding a type of digital mode with approximately 3.5KHz wide staying there for hours, I made a record and posted in a QO-100 Facebook group asking what it should be? The answer: these were two Free DV signals next to each other and the OMs were testing full-duplex mode using FreeDV.


    I just put an advice that the NB tp should not be used for Full Duplex comms (IMHO) for both analog or digital modes, then few people seems to get really annoyed with that advice and most of them declaring their support to type of full-duplex operations, and this is great mode and the future of ham radio etc. So I may be really outdated here but I though that ham radio SAT operations by nature is full-duplex, where you tx in one freq and rx in another, but using just one freq, now it seems the new and modern way to go is to utilize several frequencies at same time for the same QSO, if this is the case please let me know the procedure, like what would be the off-set from one signal to the other, etc. May be the band plan allocation for the NB should be redesigned?


    73


    Ed - PY2RN


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    W = Worked


    C = LoTW Confirmed

    Who doesn't love Excel? :)


    Excel LogSATv3.xls (old Excel versions)

    Excel LogSATv3.xlsm (newer Excel versions)


    73 Ed PY2RN

    Hi Heiner, yes, trying with Marcel's (markro92) software for some time but no decodes so far. Thanks.


    Ed PY2RN _ .._

    Hi all, I went from page 1 through 4 available for this topic, apologies if I missed but could not find and/or understand if Pluto will be usable to RECEIVE DVB-S2 from the WB TP? If yes, what would be the software that could be used preferably on Windows?


    73

    Ed, PY2RN _ .._