[amsat-bb] Re: Lunar Architecture Moon Base

Nate Duehr nate at natetech.com
Tue Dec 5 00:56:45 PST 2006

James R Miller wrote:
> On Dec 04, Pat, KA9SCF wrote: 
>> With the amount of libration on the moon, what's the maximum antenna gain
>> per band that you can get before it becomes too much of an issue.
> http://www.amsat.org/amsat/articles/g3ruh/110.html
> Perhaps this should be in the Amsat FAQ   =%-)
> 73 de James G3RUH

Perhaps with all the "noise" (pun intended) here recently about 
unlicensed transmitters on 2.4 GHz... the following line from the article:

"For a given TX e.i.r.p., signal strength received at Earth depends only 
on the mechanical size of the RX antenna; frequency is irrelevant [1]. 
Noise level however is not, and S-band (2.4 GHz) is a sensible downlink 
choice because very low noise performance is robustly obtainable "off 
the shelf"."

Is more controversial than it once was?  :-)

Or maybe not.  Depends on who's arguments one liked during the recent 
2.4 GHz debate on the mailing list.

The above comments notwithstanding, nice article James.  Thanks for 
sharing the link.  I learned something from reading it, and that's 
always a Good Thing.

Nate WY0X

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