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Re: Newbie Q & A




This discussion always makes me giggle.  PEP means nothing!  ERP is all that 
matters.  My 5 Watts into a 10dBi antenna will beat your 10 Watts into a 3 
dBi antenna every time.

73,
Joe
ka0yos@amsat.org


>From: "Scott Elliott" <scott@pieh0.co.uk>
>To: <amsat-bb@AMSAT.Org>
>Subject: Re: [amsat-bb] Newbie Q & A
>Date: Sat, 16 Mar 2002 20:33:29 -0000
>
>shall we just ban pa's :)
>cause i use 30 watt pep on uo14, and thats just to attempt to get over the
>people using stupid amounts of power. fo20/29 i use 15 pep with no problem.
>granted, still a bit high, but with my farting little yagi's, i have to :/.
>
>while we are at it, what about people that INSIST on putting about 5-10 
>secs
>worth of tone burst using stupid amounts of power. with the volume i have 
>my
>headphones at, it cant be doing any good to hear 1750hz worth of tone :)
>
>shame you cant have some sort of banning system on the sats, mainly due to
>liecensing and also due to people not using the way in which it would be
>done, like using aqs on the 736's :)
>
>
>Speak to you later.
>Scott Elliott
>Scott@pieh0.co.uk
>2E1FJB / M1SJE
>----- Original Message -----
>From: "Terry Bendell" <ve3tkb@sympatico.ca>
>To: "sarkas services" <landscaping@sarkas.com>; <amsat-bb@AMSAT.Org>
>Sent: Saturday, March 16, 2002 5:42 PM
>Subject: Re: [amsat-bb] Newbie Q & A
>
>
> > I have to agree with you on this Lou,
> > I operate 1 watt or less on the LEO with simple antennas,
> > During night or wee am passes I get in just fine.
> > It's not until the 2kw (ERP) staions fire up that it
> > becomes impossible.
> >
> > 73
> > Terry
> >
> >
> > ----------
> > >From: "sarkas services" <landscaping@sarkas.com>
> > >To: <amsat-bb@AMSAT.Org>
> > >Subject: Re: [amsat-bb] Newbie Q & A
> > >Date: Sat, Mar 16, 2002, 8:58 AM
> > >
> >
> > >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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> > >>
> > >
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