Posts by PA3FYM

  • Downconverter für BaMaTech Dualband Feed

    Quote from DJ7GP

    Zur Wirkung verschiedener dielektrische Linsen hat Charly, DF5VAE aussagekräftige Messungen durchgeführt. Die Fresnelllinsen von TV-Rocket-LNBs sind, das zeigen die Messungen, sehr gut. Leider lassen sie sich nur in seeehr großen Stückzahlen preiswert herstellen.


    Entschuldigung, nein .. DF5VAE hat dieser Messungen nicht durchgefuehrt aber PE1CKK und PE1CKK hat auch die Linsen gemacht/gedruckt. Ich war dabei und habe einige Linsen probiert.

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    Bitte die richtige Referenzen benutzen oder gibt es Plagiate?

  • MY QO100 SETUP

    The small loop with marker 1 is the loop you want to try to get into the center of the Smith Chart.

    Try to fiddle with the patch edges/corners and decrease, like G0MJW said, the sweep to 2.3 - 2.5 GHz.


    Your results look nominal, but need some tweaking.

  • What TX amplifier do you plan to use?

    PA5CW Bought them in 2016 on 'the Jutberg flea market' to build my first Es'hail-2 transverter. (Because of that) Others bought them too and I haven't seen them ever since. I got a mail from somebody from Italy a long time ago about how to get the pallet running and mods for 2.4 GHz. So apparently they were available in Italy too . .

  • Remote operation via QO-100

    ON4CJQ It applies to the uplink facility. Remember, (not to you personally) you are working through a facility which is not yours.

    So, the owner (Es'hailSat) decides which users he (it) accepts on his space vehicle.


    It's the same as that you decide who enters your living room at home. Because it's your house.


    There are no technicalities involved , it's the owner who decides, like you in your own house / living room.

  • Remote-Betrieb über QO-100

    Code
    Professionelle Benutzer müssen ihre Geräte (physisch) ausschalten, wenn der Satellitenbetreiber dies 
anfordert. "Ziehen Sie also sozusagen den Stecker".

Das ist dort ganz normal, warum nicht bei uns?

  • Remote operation via QO-100

    The satellite operator, in this case Es'hailSat, has the right to define which or what kind of 'operation' they allow on their satellite(s). After all, the satellite is owned by Es'hailSat and not by us. For the QO-100 transponder Es'hailSat delegated governance to AMSAT-DL.


    The reason why the satellite operator has this point of view is simple: reduce failure factors. QO-100 is aboard a commercial/professional space vehicle with other (paying!) users/customers with well defined service level agreements (SLA's).


    Bear in mind that from a professional perspective it is 'odd' that a satellite operator allows 'non coordinated' users on/through their space vehicle!

  • NB passband monitoring

    DK8KW and dg0opk FT8 works exactly the same are on e.g. the shortwave bands. If you can make FT8 QSO's there, you can make them via QO-100 as well. QO-100 does not know or does not react different that/when you are making FT8, it's all up to the uplinker (having a stable enough signal).

  • PROPOSAL FOR INCREASED ACTIVITY

    I reckon more than 1700 POTY's (kits) have been made. So there is potential activity enough. Furthermore there must be an RF incentive (i.e. make stuff for 2.4 GHz narrow band) to become active on the NB transponder. Making stuff for 2.4 GHz uplink seperates boys from men ; -)

  • NB passband monitoring

    I made FT8 QSO's with no issues. When you set your (Windows) time properly with rsNTP (google on it) and you're stable enough, and you have clear audio, it works flawlessly.

  • TRV QO-100 for TRX HF

    SP3OSJ Sorry to post this feedback here, but when I listen to your GPS stabilized RX (see YouTube movie) in relation with the beacon I hear unacceptable drift. It is not a steady tone and I hear too much phase noise (the tone is 'raw' and not clear).

  • 'Cracks' heard on both CW and PSK beacon

    Just by accident I listened to the CW beacon on the Goonhilly WebSDR and seem(ed) to notice some short 'cracks' / ticks on the CW signal. These cracks/clicks are not related to the CW rhythm ('aka key clicks'). Also noticed this on the PSK-beacon.

    To verify I listened with my own RX-setup and also heard these cracks/clicks. Sounds like there seems something (almost) 'loose' ...


    <-- 'cracks'/clicks on the two long carriers


    Edit: Don't seem to hear this with other signals.