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 Arecibo on 432 MHz Moon Bounce
Arecibo on 432 MHz Moon Bounce
The Arecibo Observatory Amateur Radio Club will be putting the 1000-foot radio telescope on the air for 432 MHz EME from April 16-18.
It can be heard with a small hand-held yagi pointed at the moon
The scheduled times of operation are:
April 16: 1645 - 1930 UTC
April 17: 1740 - 2020 UTC
April 18: 1840 - 2125 UTC
Callsign: KP4AO
Tx Frequency: 432.045 MHz
Rx Frequency: 432.050 to 432.060+
Tx power: 400 W
Antenna gain: 60 dBi
System noise temp: 120 K (cold sky)
System noise temp: 330 K (when pointed at moon)
KP4AO can be heard with a small hand-held yagi pointed at the moon and a good receiver. A 15 dBi antenna and 100 W will be enough to work us on CW.
Operators at KP4AO will do their best to work as many stations as possible. Each session will start with a brief announcement and CQ in SSB. SSB QSOs may continue for 30 minutes to an hour, if the QSO rate remains high.
The mode will be shifted to CW as soon as it is judged that higher QSO rates would result.
We will listen for calls at frequencies 5-15 kHz higher than our own, and even higher if QRM warrants. Callers who s-p-r-e-a-d o-u-t are more likely to be copied.
If you've already worked us in any mode, please do not call again -- give others a chance.
If we call "CQ QRP", we will listen for stations running 100 W or less to a single yagi. Please do not answer such a CQ if you are running more power or have a larger antenna.
On April 18, if we reach a condition where most calling stations have been worked, and we judge that operating in the digital mode JT65B would produce a higher QSO rate, we will switch to JT65B.
Note that any of these planned operating strategies may be changed as circumstances dictate.
We are extremely fortunate to have been granted access to the world's largest radio telescope for this amateur radio good-will event. We look forward to working as many stations as possible in the alloted time!
73 from Joe, K1JT
on behalf of all the gang at KP4AO
Moon-Net Email reflector
http://list-serv.davidv.net/mailman/...erv.davidv.net
Moon Bounce information
http://www.vhfdx.info/eme.html
UK Ham makes EME contact with just 25 watts
http://www.southgatearc.org/news/jan...me_contact.htm
Earth-Moon-Earth with 20 Watts
http://www.southgatearc.org/news/jan...h_20_watts.htm
WSJT Software for EME
http://www.physics.princeton.edu/pulsar/K1JT/
Get Southgate Amateur Radio News by Email
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400,000,000 Watts ERP?!? Almost half a Billion? Gee, I hope the Moon's still there when they are done! 
Might have to give this a try!
Steve
KV6O
These are my opinions and only my opinions, unless you share them as well, which would make them our opinions, but I am not of the opinion that I can express your opinion as my opinion without your prior expression of said opinion, and then my re-utterance of that opinion would, in my opinion, be foolish unless I were expressing agreement to your opinion, and then it wouldn't be my opinion but your opinion to which I only agree.
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What that I smell? Must be burning moon dust 
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Where is the repeater located?
TOM K8ERV Montrose Colo
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Where can I find the Keps for the moon? 
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IT'S THE ANTENNA!!
GA ALL,
For all you fairly new to amateur radio or young folks, they use to do this type of operation from Arecibo once in awhile back in the 60's and 70's. Back then they would operate on various bands anywhere from 6 meters up though 1296 MHz (23 cm).
The key to success is the ANTENNA. The 60 dB of gain the antenna has (on 70 cm) works for both TX and RX. It makes their signal stronger to us and our pip sqeak reflected signal stronger to them! As any good QRP operator can tell you, the key to success is a good antenna!
I've always wanted to try moonbounce. May dust off the 70 cm yagi and see if I can find a volunteer to point the thing!
BTW, if you want to know what the Arecibo antenna looks like, go find a copy of James Bond's Golden Eye. Part of it was shot down there.
GL to all.
Dave K3GAU
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I'LL BE THERE FOR THE SCHEDULE TIMES
TNX FOR PUTTING ARECIBO ON 432. I will be on for the prescribed schedule times.
CU Steve
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 Originally Posted by ND0Y
Where can I find the Keps for the moon?
April:
Satellite: Moon
Catalog number: 000000
Epoch time: 10074.43066632769
Element set: 357
Inclination: 24.8955 deg
RA of node: 348.8584 deg
Eccentricity: 0.0500
Arg of perigee: 149.0499 deg
Mean anomaly: 214.2222 deg
Mean motion: 0.036600996000 rev/day
Decay rate: 0
Epoch rev: 0
Checksum: 000
May:
Satellite: Moon
Catalog number: 000000
Epoch time: 10101.70977732396
Element set: 357
Inclination: 24.7577 deg
RA of node: 348.6640 deg
Eccentricity: 0.0454
Arg of perigee: 151.9510 deg
Mean anomaly: 210.6235 deg
Mean motion: 0.036600996000 rev/day
Decay rate: 0
Epoch rev: 0
Checksum: 000
73 de KE4FSL
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Nice to know that after more than 64 years, the first earth-orbiting satellite used for communications is still working... 
Thanks to the Arecibo folks for this opportunity -- will be making a "cheap yagi" for 432 and acquiring a 100w amp for my TS-811a to give this a try!
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