[amsat-bb] Arecibo on 432 MHz Moon Bounce
ka1rrw at yahoo.com
Wed Apr 7 06:06:54 PDT 2010
Here is a EME event you cant miss.
Dust off your CW key, its time for Satellite, QRP EME.
The 1,000 foot dish has 60 dBi on 432 mc and 400 watts.
That comes out to be approximately 243,902,443 Million Watts ERP.
(thanks to KB1MGI for passing on this data)
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
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
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
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
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!
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.southgat earc.org/ news/jan. ..me_contact. htm
Earth-Moon-Earth with 20 Watts
http://www.southgat earc.org/ news/jan. ..h_20_watts. htm
WSJT Software for EME
http://www.physics. princeton. edu/pulsar/ K1JT/
More information about the AMSAT-BB