For those speculating on what it will take to receive a signal from the Moon, check this message received on the "microwave reflector":
X-Original-To: [email protected] Delivered-To: [email protected] X-Originating-IP: [24.18.44.7] From: "Loren Moline WA7SKT" [email protected]
Rex,
As per Paul Marsh the frequency for the Chinese orbiter doppler beacon is 2234.533 +/- doppler.
Loren
Date: Thu, 22 Nov 2007 03:05:20 -0800 From: [email protected] To: [email protected] Subject: Re: [Mw] Japanese Lunar Orbiter received.
Loren Moline WA7SKT wrote:
Hello Friends,
For those interested I again tonight received a signal from the
newly launched Japanese Lunar Orbiter.
This was received with my newly built S-Band downconverter and
a 3 1/2 turn helix antenna.
Frequency drifted due to doppler from 2263.605Mhz to
2263.581MHz before it went around the other side. I later acquired it after it came back around. I have not yet established a period of orbit.
This was a great way to test my downconverter.
Loren WA7SKT
Congratulations on the reception. Now you've got me interested.
Info I just looked up says frequencies are 2212, 2219, 2287, 8456. So do you think your 2263 was doppler shifted 2287? I wonder if the satellite doppler has much effect vs. the moon itself. Calculating the exact doppler must be quite a math exercise.
Are you still planning to try the 8 GHz frequency too? Or have you already?
A wiki for the satellite says the period of the main satellite is 2 hrs.
For John, the links say it will be at the moon for about a year. At the end they intend to do a soft landing on the moon.
Here are some links I found tonight, (there are lots more.) Selene (Kaguya): http://en.wikipedia.org/wiki/SELENE http://www.selene.jaxa.jp/en/communication/com_faq_e.htm http://www.selene.jaxa.jp/index_e.htm transmitters & freqs described in this one: http://ivs.nict.go.jp/mirror/publications/gm2006/kawano/ http://www.aerospaceguide.net/spacecraft/selene.html http://www.lpi.usra.edu/meetings/lpsc2006/pdf/1233.pdf
Seems the Chinese also have a satellite, Chang'e, orbiting the moon too. http://en.wikipedia.org/wiki/Chang%27e_1
I couldn't find any information about downlink frequencies for the Chinese one. Does anyone know anything about that one. Some of the information seemed to say it would be playing Chinese music.
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