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CX2SA > SATDIG 14.06.08 22:15l 147 Lines 5524 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V3 299
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Sent: 080614/2021Z @:CX2SA.LAV.URY.SA #:10193 [Minas] FBB7.00e $:10193_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. News Release: Satellite Launch (Michael L Miller)
2. Mode S Antenna quest (Ronald Nutter)
3. Re: Mode S Antenna quest (David Barber)
----------------------------------------------------------------------
Message: 1
Date: Fri, 13 Jun 2008 12:20:14 -0600 (MDT)
From: "Michael L Miller" <mlmiller(AT)intellus.us>
Subject: [amsat-bb] News Release: Satellite Launch
To: amsat-bb(AT)amsat.org
Cc: nb2f(AT)amsat.org
Message-ID:
<1028.216.14.249.143.1213381214.squirrel(AT)webmail.intellus.us>
Content-Type: text/plain;charset=iso-8859-1
Please put the following on the bb and on the ANS.
PreSat and NanoSail-D Beacon Alerts
Santa Clara University students invite amateur radio operators worldwide
to participate with them by receiving beacon signals from PreSat and
NanoSail-D, two pioneering cubesat missions that will launch from the
Reagan Test Site (Omelek Island, Kwajalein Atoll, Republic of Marshall
Islands) on June 23, 2008 at about 7:00 pm PDT. Both spacecraft will go
into Low Earth Orbit as secondary payloads aboard a SpaceX Falcon-1 launch
vehicle. The vehicles will be launched into a 685x330 km, 9 degree orbit,
with line of site communications only possible at low latitudes. PreSat
is a 10 x 10 x 30 cm. spacecraft, that will evaluate the performance of a
generic biofluidic sample management and handling system for future
advanced in situ spaceborne biology experiments. NanoSail-D is a 10 x 10
x 30 cm. spacecraft, which will deploy a solar sail that also will be used
as a drag sail to demonstrate orbital debris mitigation technology. These
missions follow the earlier efforts of Santa Clara U. students in
launching Genesat 1, in 2006.
Of particular interest to the amateur radio satellite community are the
PreSat and NanoSail-D beacons. The PreSat beacon will operate at 437.318
MHz FM, sending an AX.25 packet every 5 seconds; the packet contains data
about the spacecraft systems operation. The NanoSail-D beacon will
operate at 437.269 MHz FM, sending an AX.25 packet every 10 seconds; the
packet contains data about the spacecraft systems operation. The beacons
will initiate transmission as soon as each spacecraft is deployed from
their separate carriers, which are attached to a Ride Share Adapter.
Amateur radio operators are encouraged to submit received beacon packets
through the mission websites in order to receive a web-based QSL card.
The PreSat mission website at www.presat.org; the NanoSail-D mission
website is at www.nanosaild.org. These sites provide general mission and
spacecraft information, instructions on how to contact the Santa Clara
University PreSat and NanoSail-D Mission Operations teams, and the latest
orbit datam beacon packet format, and other information needed to work the
beacons.
73,
Mike Miller
KE7EGC
------------------------------
Message: 2
Date: Sat, 14 Jun 2008 07:34:29 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Mode S Antenna quest
To: amsat-bb(AT)amsat.org
Message-ID: <4853BAD5.80607(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have been experimenting with different Mode S antennas for
portable/mobile use. My latest test was with a Luxul flat panel antenna
(http://www.wisp-router.com/wri/itemdesc.asp?ic=CPFP%2D24%2D11&eq=&Tp=).
This one was a disappointment in this application. I went back to the
K5GNA reflector. The problem is that it doesnt lend itself to packing
into the Pelican 1490 briefcase that I keep my satellite demo kit in.
Has anyone tried any of the "flat panel" type of antenna with good success ?
Thanks,
Ron
KA4KYI
------------------------------
Message: 3
Date: Sat, 14 Jun 2008 14:37:31 +0100
From: "David Barber" <david.barber(AT)dbelectronics.co.uk>
Subject: [amsat-bb] Re: Mode S Antenna quest
To: <amsat-bb(AT)amsat.org>
Message-ID: <000101c8ce23$cbdc2a80$6401a8c0(AT)DBXPPPOR>
Content-Type: text/plain; charset="us-ascii"
So take the K5GNA reflector, cut it along the bends, drill and fit small
hinges making a stop of some sort to give the correct angle when open and
there you go.
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Ronald Nutter
Sent: 14 June 2008 13:34
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Mode S Antenna quest
I have been experimenting with different Mode S antennas for
portable/mobile use. My latest test was with a Luxul flat panel antenna
(http://www.wisp-router.com/wri/itemdesc.asp?ic=CPFP%2D24%2D11&eq=&Tp=).
This one was a disappointment in this application. I went back to the
K5GNA reflector. The problem is that it doesnt lend itself to packing
into the Pelican 1490 briefcase that I keep my satellite demo kit in.
Has anyone tried any of the "flat panel" type of antenna with good success ?
Thanks,
Ron
KA4KYI
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------------------------------
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Sent via amsat-bb(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 3, Issue 299
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