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Re: 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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