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Re: Hearing the Moon EME on 216.98



Robert and the Group,

Moon Reflections of the Radar are very very...... strong. From April 21st
2004 I'm running fr 10 days a website with a live weatherfall display of my
receiver on 216,980Mhz. I'm using a 8el Yagi but a dipole will do also the
job.
http://www.itr-datanet.com/~pe1itr/live/live.html

73 Rob PE1ITR

----- Original Message ----- 
From: "Robert Bruninga" <bruninga@usna.edu>
To: <amsat-bb@AMSAT.Org>; <oj@nerpa.net>; "Robert Bruninga"
<bruninga@usna.edu>
Sent: Sunday, April 18, 2004 9:15 PM
Subject: [amsat-bb] Hearing the Moon EME on 216.98


> This is a repost because the SUBJECT was wrong...
> and even I couldnt easily find it in the list...
>
> OJ said:
> >Australians  have detected US UHF TV VIA the moon.
> >Digipan works well!
>
> Starting today, the Moon will cross the fence twice a day
> for the next two weeks.
> Just tune to 216.98 MHz when the moon passes through
> the azimuth of 91.5 or 271.5 degrees from the main
> transmitter at  33 deg 34m N and 98 deg 46m W.
> Get the exact coordinates from the web site below...
>
> I ran the approximate times below.
>
> The transmitter is 750 Kw  (+28 dB of a HAM EME xmtr)
> with an antenna gain of about 30 dB?  Thus the return
> will be about 36 dB greater than EME so  you should be
> able to hear it on a dipole?
>
>         91de      271 deg
> Day  time EL  time  EL
> ------  ------- ----  ------- ----
> 18  1230  9  2335  10
> 19  1345 19  2330  22
> 20  1410  30  2350  32
> 21  1630  40  0000  40
> 22  1750  48  0015  48
> 23  1910  54  0043  53
> 24  2015  59  0120  55
> 25  2100  57  0220  53
> 26  2130  53  0335  48
> 27 2150  46  0500  40
> 28 2205  37  0620  30
> 29  2215  27  0755  18
> 30 2220  15  0915  08
> 31 2230   05
>
> Times are UTC.
> These numbers ARE NOT ACCURATE!  They are
> just an approximation within 15 minutes based on a quick
> look at Instantrack between breakfast and church.  I would
> hope someone might want to refine them based on
> more accurate tracking of the moon than Instantrackj.
>
> The Moon should be in the fan beam for about
> 2 minutes.  You are listening for a carrier so use a CW
> receiver and to pull out the very weak signal use
> digipan.    Where to tune?  Best I konw is that the
> transmitter is 216.980 MHz, but I think there is an
> EAST transmitter in Alabama and Arizona that are
> 10 KHz above and below (I dont know which way).
>
> The above table starts on 18 April because that is
> the first day the moon crosses the fence above
> the horizon from the central transmitter site in Texas.
> But because of the auxilliary transmitters in AL and
> AZ, the fence actually goes further out over the atlantic
> and pacific and so on days before the 18th and after
> the 30th, EAST or WEST stations will get other
> opportunities.
>
> For an amateur link on info about NAVSPASUR site (now
> named NSSS) see:
> http://www.jump.net/~crossley/NAVSPASUR/
>
> For some recordings of pings of meteors and satellites
> crossing the fence (you will need to live closer to the
> fence line across Ala, TX and AZ) see:
> http://science.nasa.gov/newhome/headlines/ast22dec98_1.htm
>
> de WB4APR
>
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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