RE: ARLA/CLUSTER: O que necessita saber para contactar Arecibo no próximo fim-de-semana.

[CT1EKD]

Boa tarde

O que ainda não sabe sobre este assunto...
Trata-se de segundo ano em que é celebrado. 
È um evento Mundial não sendo limitado a Arecibo, Tem o nome de "Echos of
Apollo" organizado para celebrar os quarenta anos da missão lunar Apolo 11.
Tem pagina no Facebook, (http://www.facebook.com/group.php?gid=84916581293)
e é também celebrado na comunidade radioamadoristica como o dia da Reflexão
Lunar (EME).
São vários os rádio-telescopios que serão usados neste evento, do qual se
destaca evidentemente o de Arecibo.

Vamos lá pessoal, vamos ligar esses rádios em 432mhz, esta é uma daquelas
para contar mais tarde aos netos...


Muitos Mais detalhes em
http://echoesofapollo.com/moon-bounce/


Pedro - CT1EKD



-----Original Message-----
From: cluster-bounces  radio-amador.net
[mailto:cluster-bounces  radio-amador.net] On Behalf Of António Matias
Sent: terça-feira, 13 de Abril de 2010 16:18
To: Resumo Noticioso Electrónico ARLA
Subject: Re: ARLA/CLUSTER: O que necessita saber para contactar Arecibo no
próximo fim-de-semana.

Boas.
Da ultima vez que activaram, KP4AO, chegavam na minha estação com sinal real
de s5.
Estava com uma antena de  9 WL ( 9 comprimentos de onda)  apontada à lua.
Mesmo com a antena  de forma precária apontada à lua, com o reflector no
chão e apoiada num escadote, o sinal era magnifico.
Daí que lanço o desafio, aos colegas que tenham uma direccional de UHF na
garagem ou na caixa, que a montem e experimentem escutar Porto Rico em UHF
via Lua.

É uma experiência inesquecível.

73

Matias
CT1FFU-CR5A

www.dxpatrol.com
   

No dia 13 de Abril de 2010 13:59, João Gonçalves Costa <joao.a.costa  ctt.pt>
escreveu:


	 <http://www.stephouse.net/~magpieblog/magpie/arecibo.jpg> 

	Arecibo Coverage Maps


	Russ, K2TXB has made available coverage maps for the Arecibo 432.045
MHz EME transmissions from Puerto Rico on April 16-18.

	He writes:

	It seems to me that there are a lot of guys asking questions about
the Arecibo operation, wanting to know if and when they can work them. So I
have put up three pages on my web site that show the ground coverage that
the Arecibo dish will have on each of the days of operation.  Go to:
http://www.k2txb.com/ <http://www.k2txb.com/> 

	The first three links will show you the times and coverage for each
of the three days. Generally the moon will be high in the sky when you can
work them, so you should expect to build up some sort of temporary support
structure that will allow you to aim your antenna up and manually position
it to point at the moon. Ideally the support structure should be as low to
the ground as possible and still allow the back of the antenna to clear the
earth when pointed up.

	If you can see the Moon, all it will take is a visual aiming. Lay on
your back under the antenna and sight along the boom to verify that the boom
is pointed straight at the Moon. For short antennas this is not very
critical and generally within 10-20 degrees will work.

	If you cannot see the Moon (due to cloud cover) then you need a
program to tell you where the Moon is, from your location at the current
time. Then you will need a way to measure and set the elevation and the
azimuth of the antenna. Elevation can be measured easily with a level and a
protractor, or a simple gravity operated inclinometer such as sold for a few
dollars in most any hardware store.

	Azimuth can be measured with a compass, but make sure you take into
account the offset in your area between true north and magnetic north. An
easy way to determine how much offset you need for your compass headings is
to see how much difference there is between your compass heading and the
location of the Sun. Any Moon program will also show Sun locations so this
is easy.

	The web pages that I put up are Q&D (Quick and Dirty). Maybe I will
enhance them with a little more information in the coming days.

	

	Very 73, 
	Russ K2TXB 
	
	FN20MB (MB for Moon Bounce)

	http://www.k2txb.com/ <http://www.k2txb.com/> 

	Moon-Net Email reflector
	
http://list-serv.davidv.net/mailman/listinfo/moon-net_list-serv.davidv.net
<http://list-serv.davidv.net/mailman/listinfo/moon-net_list-serv.davidv.net>


	Arecibo on 432 MHz Moon Bounce April 16-18
	
http://www.southgatearc.org/news/april2010/arecibo_432_moonbounce.htm
<http://www.southgatearc.org/news/april2010/arecibo_432_moonbounce.htm> 


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