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LW2EIQ > SAREX 02.07.96 21:51l 64 Lines 2920 Bytes #-10887 (0) @ AMSAT
BID : 17066_LW2EIQ
Read: GUEST OE7FMI
Subj: Re: why no voice over South America - was Re: Msg to sts-78
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Sent: 960701/0307Z @:LW2EIQ.7600.BA.ARG.SA #:17066 [GF12FA] $:17066_LW2EIQ
From: LW2EIQ@LW2EIQ.7600.BA.ARG.SA
To : SAREX@AMSAT
crew...
At 07:00 AM 6/29/96 -0700, you wrote:
>On Fri, 28 Jun 1996, Philip Chien wrote:
>
>> Luiz Felipe Ceglia <lceglia@pobox.com> asks:
>>
>> >>...
>> >>The next time you mail them, please put a PS: asking them to operate in
>> >>voice over South America, ok? ;)
>>
>> mission. Contrary to what some hams may think the inclination for this
>> mission was not planned for 39 degrees just so the shuttle could go over
>> their QTH.
>>
>
>According to the list I obtained from the shuttle web, STS-78 is the LAST 39
>degree profile through, at least, 2001. I believe the next 20-30 are about
>90% 52 degree inclinations. This should improve everyone's chances for
>contact.
>
>I also read recently that the Ham set-up is being viewed as important to
>crew morale and figures to become more frequently in the flight plan.
>
>As for me, my little Radio Shack (Pro-35) hand-held scanner has yet to get a
>blip. I am using either a telescoping or the rubber antenna. I have set
>the telescoping unit to the specified ham length. I track with STSPLUS and
>follow the flight plan. Should I just be patient or am I waisting my time?
>Will my 145.550 be able to handle the Doppler?
great to hear we'll have more chances to attempt contact.
***MENTAL NOTE*** Suggest to NASA they try SIMPLEX for the non-SAREX flights...
Three things about listening for the shuttle:
1. Is your squelch turned down all the way??? I know that it's
line-of-sight communication, but sometimes you need to turn it down to hear
a peep. In order to break the squelch on the Pro-35 it can take quite a
jolt, even on a good pass. And since this is simplex and the Shuttle and
Mir are using 35 watts at best, the Pro-35 is best listened without the
squelch turned on. I used to own one, I know the frustrations of owning one...
2. Update your Keplarian Elements DAILY. One day old Keps can vary the
AOS/LOS times by three to five minutes and several degrees of inclination
due to the fact that the shuttle's low orbit creates drag that slows it down
just enough to make havoc on the pass times. Even with the most current
Keps in the program, give about 5-10 mins for the pass. Just because the
shuttle is supposed to be passing Yahoo, USA at 11:05:34 does not mean you
will hear them at exactly 11:05:34. I've noted (on this flight) about a 3
minutes delay in even hearing the shuttle at the expected AOS. for Mir it's
been about 2 mins.
3. Is the crew awake? The Columbia's passes take them over the USA at
between 6AM and 5PM EDT. The crew is awake from about 8AM to 8PM CDT
depending on the day. They are supposed to have packet running during
off-time, but I've heard it off and on. The crew will usually get on during
SAREX contacts, during meals, and any free time they may have.
I've heard them, but have yet to log my first SAREX QSO. Don't give up!
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