[amsat-bb] Fiberglass Cross-boom Alternative?

[Jean Marc Momple]

Roy,

May be I wrongly expressed myself, when I say repeater it is not thinking about our actual 2-way terrestrial or LEO FM repeaters but such as data and forward type of QSO or other mode new mode we need to invent (not voice in spite waiting for the delay from MARS it is still possible, no issue from the moon).

Also, when I mentioned antennas I am was more focusing on dishes for much higher frequencies that V/U, such as X-band or KA band. For sure for MARS it is somehow challenging, for the moon also but from experience receiving the Chinese Lunar satellites TLM its seem feasible with relatively modest means (surely very relative on one's standpoint).

But have a look on other Hams achievements on Twitter such as Scott Tiley or Daniel Estevez (and others) collecting signals from Voyager-1, Change5  and others to understand better the opportunities

73


Jean Marc (3B8DU)

> On Nov 26, 2020, at 4:34 AM, Stefan Wagener via AMSAT-BB <amsat-bb at amsat.org> wrote:
> 
> Hi Roy:
> 
> 
> ...."“You must understand, young Hobbit, it takes a long time to say
> anything in Old Entish. And we never say anything unless it is worth taking
> a long time to say.”
> ― J.R.R. Tolkien, The Two Towers
> <https://www.goodreads.com/work/quotes/2963845>
> 
> On Wed, Nov 25, 2020 at 6:30 PM Roy Dean via AMSAT-BB <amsat-bb at amsat.org>
> wrote:
> 
>>> 
>>> These antennas will have no metal parts except the active elements and
>> the purpose is to be prepared or the future Lunar and eventually Mars
>> repeaters, but also for own experimentation.
>>> 
>>> 
>> How would a mars repeater work, being that the closest it will ever be is 3
>> minutes away by way of light speed (each way)?   Everybody is a lid when
>> nobody can hear themselves on the downlink.   Not sure even a store and
>> forward system would work.   And that's even IF we can build a yagi thats
>> short enough to fit in our sub-acre plots (and has enough gain).   :D
>> 
>> --Roy
>> K3RLD
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> _______________________________________________
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