Power Amplifier from E.REON

  • The design looks very professional, not on the cheap side though. But a properly machined case has its price.. 30W in 85cm should be enough unless you have a metallized window (like in cars or trains). In any case, if you have this behind the windows I would strongly recommend staying out of the room while transmitting.

  • The design looks very professional, not on the cheap side though. But a properly machined case has its price.. 30W in 85cm should be enough unless you have a metallized window (like in cars or trains). In any case, if you have this behind the windows I would strongly recommend staying out of the room while transmitting.

    Hallo Achim


    If I open/tilt my metalized (Velux) window in elevation angle to QO-100, then I can make SSB-QSO's with the EDUP "8W" booster. My signal is weak but clear. See also my QRZ.COM site with photo. My up-converter has 400mW, 18dB gain results in about 25 Watt (datasheet).


    I'm more afraid about too much power (LEILA). What do you think ?


  • Then I have no signal (LOS) :) When I tune to the PSK-beacon so I can hear it and close slowly the window, then the signal gets quieter until LOS. At a rainy or cold day I can't operate, so I have a "nice-weather-QO-100-station". But that's OK :).


    To tilt the window in the right angle, I have a stick with the right length to clamp between window and window frame. That's the reason for my weak uplink signal.

  • Outside, a 30W PA with 85cm will certainly trigger LEILA. That said, backing it off will give you a very nice (spectrally clean) signal. If you are using such a setup however from indoors (blasting an unknown amount into the surrounding area), it is a bit tricky to estimate how much EIRP is actually leaving your house.

  • HB9SKA consinder also fresnel zone. May be a panel or patch antenna can be put more close to the window and improve Tx signal.

    Hello George


    The window is open/tilted as described above. I also can not move the tripod with the dish nearer to the window, otherwise I can't open the window. Do you mean, the tilted window is in the Fresnel zone ? In any case it disturbs my transmitted signal, but my "construction" works. :)