[amsat-bb] Re: European Lunar Lander - Call for Declarations

Jari Koivurinne jari.koivurinne at aina.net
Fri Jun 1 22:55:58 PDT 2012

> I disagree about having to have a EME class station if we put a
> transponder on the moon.
> The reason being, since the same side is always facing the earth, a
> directional high gain antenna may be used on the transponder itself!
> Lee

How big antenna and what band should be used? Please calculate the best
combination here:


Note that you need about -120dBm signal to be heard in receiver.
The path is about 400000km (240000 miles).

-jari oh3uw  ;-)

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