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Re: Newbie Q & A



How come the real issue is NEVER talked about, when it comes to simple
operations, with "Basic"  equipment?  you can work  AO-27 with 5 watts, 2 on
an overhead pass, I think you could work uo-14 on.5 watt. but the difficulty
lies in everyone pushing 50-100 watts into these birds, so the guy with a HT
and whip is talking into the wind, come on we have to admit, hardly anyone
is using the minimal power to get into the birds, if everyone was QRP it
would be easy,  on a quiet ocean pass I worked europe with my HT with 2
watts. granted a had the Arrow so there was some gain,,,
Lou
N1GOD Formerly KB1HJB
----- Original Message -----
From: "nagesh" <ham@vsnl.com>
To: "amsat-bb" <amsat-bb@AMSAT.Org>
Sent: Friday, March 15, 2002 9:48 PM
Subject: [amsat-bb] Newbie Q & A


> ``Is it true that one cannot work through amateur satellites with simple
> ham-gear?''
> The most common question from a newcomer.
> The most common phobia preventing them coming on to satellites.
> This question is well answered in discussion on amsat-bb.
> It is edited and condensed here with due credits to all those who
> participated.
> It is done so that it is available at one place and can be passed on to
any
> newcomer.
> Thanks to Steve Olney for raising the question and all others who
> answered -it made a very interesting reading!!
>
>
> It is a myth busted!!
> --------------------------------------------------------------------------
-
> ----------
> MYTH:
>
> If I got the information right, there are currently no sats which can be
> accessed by simple equipment (e.g., fixed turnstiles).
> Steve Olney VK2ZTO
> ======================
>
> REALITY:
>
> 1) I'm not sure where you got that information, but it is not completely
> true.  I copy all of the following satellites using only a simple 6" whip
> (for UHF) and 19.5" whip (for VHF) over a groundplane on my roof:
>
>  ISS   above about 3 deg   6 passes a day
>  PCsat above about 10 deg  5 passes a day
>  UO-14 above about 10 deg  5 passes a day
>  AO-27 above about 15 deg  2 passes a day (daylight only)
>  UO-22 above about 20 deg  4 passes a day
>  NO-45 above about 30 deg  3 passes a day
> That averages to almost one satellite per hour that anyone can hear.
>
> More antennas, of course, helps.  But it is really very easy... If you put
> a 3 element VHF and 5 or 6 element UHF array on a cheap $64 radio shack
> rotator canted up about 10 degrees, then you will get 90% horizon to
> horizon coverage of all of these birds.  You can even fully automate your
> station by running APRStk (a DOS program) which will drive the rotator via
> 2 bits on the parallel port.
>
> Bob, WB4APR
>
> 2) Boy is that ever wrong!  Essentially all of the LEO satellites CAN be
> worked with simple antennas.  Not necessarily very well, but it can be
> done.  I personally have used AO-27 (which is not turned on over the
> southern hemisphere, so you can't use down under), UO-14, FO-20, FO-29,
and
> NO-44 (PC-Sat) using fixed antennas on my pickup truck.  Now, I will be
the
> first one to tell you that my long boom yagis at home work better, but
they
> can be used with minimal antennas.
>
> Jim Walls - K6CCC
>
> 3) Don't forget RS-12/13 which is probably the easiest of all to work.
>
> Joe,  ka0yos
>
>
>
> 4) Steve, this just isn't true. I moved house recently (from one side of
> the
> world to the other) and don't yet have my antennas and rotators set up.
> However, I've made a number of successful QSOs on UO14 using simple
> antennas. How simple? Tx is 20 watts into a home built quarter-wave
> vertical. Rx is a 70 cm folded dipole bent from bronze brazing rod. What's
> more, I can hear myself on FO29 (SSB) too. Using a wire dipole on 15
> metres, in can put a good signal into RS13 (21 MHz up, 2m down).
>
> I would be able to work AO27 too, if only it was turned on over this part
> of the world.
>
> Using a modem built from a salvaged TCM3105, I've also sent packets
through
> the ISS and copied those from PCSat (actually, you can do this with a
sound
> card too).
>
> So... yes, in fact. There ARE plenty of satellites that you can work using
> simple fixed antennas.
>
> Steve, using my simple set up, I regularly work VK3HV, VK3UH, VK3AJK,
> VK3BLG, VK4KR, VK3TBC,  and VK3JED on UO14. There are also others on less
> frequently.
>
> UO14 is easily the busiest down here. Most of the others are rather quiet,
> with sadly, little activity (well... ISS is busy).
>
> Sil - ZL2CIA (ex PA3HIL)
>
>
> 5) UO-14 you have to listen for the carrier (actually carries FM open
> squelch noise when there is no uplink).  I believe FO-20's beacon is non-
> functional.  FO-29 has a beacon.
> :)  I use a home brew beam for 2m/70cm
> -Tony Langdon
> -----------------------------------------------------------------------
>
>
> -nagesh, vu2nud@amsat.org
>
> Nagesh Upadhyaya
> Co-ordinator, Amsat India
> 607, ISRO Layout, BANGALORE-560 078
> Ph: (R) 080-666 2015
>       (O) 080-508 3249
>
> website: www.amsatindia.org
>               www.amsat-india.org
>
>
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