| |
CX2SA > SATDIG 02.12.15 11:43l 812 Lines 27822 Bytes #999 (0) @ WW
BID : AMSATBB10371
Read: GUEST
Subj: AMSAT-BB-digest V10 371
Path: IW8PGT<CX2SA
Sent: 151202/0939Z @:CX2SA.SAL.URY.SOAM #:34723 [Salto] FBB7.00e $:AMSATBB10371
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: BIas-T Power Supply (Mark Johns)
2. First contact on LilacSat-2 (Bill Dillon)
3. Vega Launch Web Streaming (JoAnne Maenpaa)
4. Re: Vega Launch Postponed (JoAnne Maenpaa)
5. Upcoming ARISS Contact Schedule as of 2015-12-01 20:00 UTC
(AJ9N@xxx.xxxx
6. Recap on my radio tests with AO-85...
(Patrick STODDARD (WD9EWK/VA7EWK))
7. HM58 on AO-73 at 22:04 (Pedro Sousa)
8. ARISS Audio for Friday Conatct (John Spasojevich)
9. Re: Satellite Breakup and some debris?) (Ted)
10. AO73, unsuccessful loop test (Mark Lunday)
11. Re: AO73, unsuccessful loop test (Paul Stoetzer)
12. Thanks for the help RE: AO73, unsuccessful loop test
(Mark Lunday)
13. A refresher needed... (Mark Lunday)
14. Re: A refresher needed... (Daniel Est?vez)
----------------------------------------------------------------------
Message: 1
Date: Tue, 1 Dec 2015 03:45:51 +0000 (UTC)
From: Mark Johns <mjohns166@xxxxx.xxx>
To: Tony <dxdx@xxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] BIas-T Power Supply
Message-ID:
<904972582.12381547.1448941551264.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important;
background-color:white !important; } Since you are only using one pre-amp
at a time, and presumably feeding the DC into the line through a choke, I
wouldn't expect there to be an issue. I have pre-amps from the same company
that I power through my IC-9100, so they are both running off the same
supply via the rig. No issues.?
Sent from Yahoo Mail for iPad
On Monday, November 30, 2015, 18:47, Tony <dxdx@xxxxxxxxx.xxx> wrote:
All:
I'll be installing new SFH-Elektronik preamps along with Bias-T's to run
DC along the coax. I'd like to feed each preamp with one power supply,
but I was wondering if this may cause RFI issues? The power supply for
the preamps will be separate from the rigs power supply.
Thanks
73, Tony
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Mon, 30 Nov 2015 22:28:49 -0600
From: Bill Dillon <bill.g.dillon@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] First contact on LilacSat-2
Message-ID:
<CADnLNZzsMoBvzR1Z6R0GLVeHLTtgT5XvV59YCWh94FptC4X0PA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I was thrilled to make my first contact (with W4CLJ) on the 00:35 z
LilacSat-2 pass this evening. Lots of odd tones, and it sounded at times
that someone was keying without speaking, but I still was able to get
through.
I used an HT and Arrow 2 antenna. Unlike AO-85, there wasn't much activity
on the sat, I heard just one other station (NP4?? DM41), but couldn't make
contact.
Good ol' SO-50 is still the easiest of the easy-sats for me to work with my
simple gear.
--Bill, KG5FQX
------------------------------
Message: 3
Date: Tue, 1 Dec 2015 08:13:17 -0600
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Vega Launch Web Streaming
Message-ID: <001901d12c42$7093c090$51bb41b0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Here is another opportunity to view a web streamed launch video on the
evening of December 1 USA time. The European Space Agency's LISA Pathfinder
technology demonstrator will be launched by Arianespace on a Vega rocket
from the Guiana Space Center in Kourou, French Guiana.
The launch is planned for 04:15:00, December 2 UTC. This will be the evening
of December 1 USA time. Video coverage begins 20 minutes prior to launch at
http://www.arianespace.tv/ then click the 'Follow next launch' link.
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 4
Date: Tue, 1 Dec 2015 11:20:02 -0600
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Vega Launch Postponed
Message-ID: <007101d12c5c$878eef80$96acce80$@xxx>
Content-Type: text/plain; charset="iso-8859-1"
Well folks, gotta find something else to watch or go to bed on time ... the
launch this evening is postponed according to an ESA Press Release:
http://www.esa.int/For_Media/Press_Releases/VV06_launch_postponed
N? 45?2015: VV06 launch postponed
1 December 2015
During the final step of VV06 launch campaign, a technical issue on the Vega
launch vehicle required additional analysis. The launch initially scheduled
for December 2, 2015 is postponed.
ESA?s LISA Pathfinder spacecraft is in stable and safe conditions and the
launcher teams are currently working on this technical issue.
A review of the results will take place tomorrow, leading to a decision for
a possible launch on December 3.
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 5
Date: Tue, 1 Dec 2015 15:27:09 -0500
From: AJ9N@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2015-12-01
20:00 UTC
Message-ID: <21433c.9adb809.438f5c9d@xxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Upcoming ARISS Contact Schedule as of 2015-12-01 20:00 UTC
Quick list of scheduled contacts and events:
Nanasawa Kibounooka Elementary School, Atsugi, Japan, direct via 8N1NKSG
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Kimiya Yui KG5BPH
Contact is a go for: Wed 2015-12-02 09:33:51 UTC 61 deg
Yayoi Elementary School, Yatomi, Japan, direct via 8N2YAYOI
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Kimiya Yui KG5BPH
Contact is a go for: Fri 2015-12-04 09:25:46 UTC 57 deg
Dragonskolan, Ume?, Sweden, telebridge via LU1CGB (***)
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Kjell Lindgren KO5MOS
Contact is a go for: Fri 2015-12-04 10:15:01 UTC 72 deg (***)
Ingushetia, Russia, direct via TBD
The ISS callsign is presently scheduled to be RS?ISS
The scheduled astronaut is Sergey Volkov RU3DIS
Contact is a go for: Sat 2015-12-05 16:25 UTC
Konstanty Ildefons Ga?czy?ski Junior High School, ?wi?tajno, Poland,
telebridge via LU1CGB
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Kjell Lindgren KO5MOS
Contact is a go for: Tue 2015-12-08 08:19:31 UTC 62 deg
****************************************************************************
**
From 2015-12-20 to 2016-01-04, there will be no US Operational Segment
(USOS)
hams on board ISS. So any schools contacts during this period will be
conducted by the ARISS Russia team.
****************************************************************************
ARISS is always glad to receive listener reports for the above contacts.
ARISS thanks everyone in advance for their assistance. Feel free to send
your reports to aj9n@xxxxx.xxx or aj9n@xxx.xxx.
****************************************************************************
Several of you have sent me emails asking about the RAC ARISS website and
not being able to get in. That has now been changed to
http://www.ariss.org/
Note that there are links to other ARISS websites from this site.
****************************************************************************
Looking for something new to do? How about receiving DATV from the ISS?
If interested, then please go to the ARISS-EU website for complete
details. Look for the buttons indicating Ham Video.
http://www.ariss-eu.org/
If you need some assistance, ARISS mentor Kerry N6IZW, might be able to
provide some insight. Contact Kerry at kbanke@xxxxxxxxx.xxx
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:
Gaston ON4WF with 121
Francesco IK?WGF with 115
Satoshi 7M3TJZ with 112
****************************************************************************
The webpages listed below were all reviewed for accuracy. Out of date
webpages were removed and new ones have been added. If there are
additional
ARISS websites I need to know about, please let me know.
Note, all times are approximate. It is recommended that you do your own
orbital prediction or start listening about 10 minutes before the listed
time.
All dates and times listed follow International Standard ISO 8061 date
and
time format YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of 2015-12-01 20:00 UTC.
(***)
Here you will find a listing of all scheduled school contacts, and
questions, other ISS related websites, IRLP and Echolink websites, and
instructions for any contact that may be streamed live.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Total number of ARISS ISS to earth school events is 1010.
Each school counts as 1 event.
Total number of ARISS ISS to earth school contacts is 975.
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is 46.
A complete year by year breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Please feel free to contact me if more detailed statistics are needed.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The following US states and entities have never had an ARISS contact:
Arkansas, Delaware, North Dakota, Rhode Island, South Dakota, Vermont,
Wyoming, American Samoa, Guam, Northern Marianas Islands, and the Virgin
Islands.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
QSL information may be found at:
http://www.ariss.org/qsl-cards.html
ISS callsigns: DP?ISS, IR?ISS, NA1SS, OR4ISS, RS?ISS
****************************************************************************
The successful school list has been updated as of 2015-11-24 01:00 UTC.
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
Frequency chart for packet, voice, and crossband repeater modes showing
Doppler correction as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Listing of ARISS related magazine articles as of 2006-07-10 03:30 UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf
Check out the Zoho reports of the ARISS contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 43/44 on orbit
Scott Kelly
Mikhail Kornienko RN3BF
Exp. 44 on orbit
Oleg Kononenko RN3DX
Kimiya Yui KG5BPH
Kjell Lindgren KO5MOS
Exp. 45 on orbit
Sergey Volkov RU3DIS
****************************************************************************
73,
Charlie Sufana AJ9N
One of the ARISS operation team mentors
------------------------------
Message: 6
Date: Tue, 1 Dec 2015 13:36:26 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Recap on my radio tests with AO-85...
Message-ID:
<CAN6TEUfUOXU_=Mm2QEgkKu06JY3Bs=mo_8YMFo0QU9wX_bJW-g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi!
Since AO-85 was launched in October, I have been testing different HTs to
see which ones can work this satellite full-duplex and writing about those
tests here on the AMSAT-BB list. Other than the ISS U/V cross-band
repeater, it has been a long time since we have had a U/V FM satellite
(going back to SO-35 in 1999-2001). To make it easier to reference my
posts, I'm listing the links to them in the AMSAT-BB archive here...
For the Wouxun KG-UV9D, I posted my first comments about using that on
AO-85 early on the Saturday (10 October) following the launch:
http://amsat.org/pipermail/amsat-bb/2015-October/055421.html
After additional testing, I wrote more about this radio last week (Monday,
23 November):
http://amsat.org/pipermail/amsat-bb/2015-November/056189.html
I first wrote about the Wouxun KG-UV8D with AO-85 on the Sunday (11
October) following the launch:
http://amsat.org/pipermail/amsat-bb/2015-October/055462.html
and after additional tests, a post late last Saturday (28 November)
evening:
http://amsat.org/pipermail/amsat-bb/2015-November/056254.html
I briefly wrote about the AnyTone TERMN-8R just before the AMSAT
Symposium, on 12 October:
http://amsat.org/pipermail/amsat-bb/2015-October/055493.html
and wrote more about it after testing it last Thursday (26 November)
evening:
http://amsat.org/pipermail/amsat-bb/2015-November/056232.html
I tried a Puxing PX-UV973 last Friday (27 November), and wrote a report
about it that morning:
http://amsat.org/pipermail/amsat-bb/2015-November/056238.html
Not that it really needed to be tested against AO-85, I tried my Kenwood
TH-D72A HT the same Friday I had tried the PX-UV973. I posted a report
about it late that evening:
http://amsat.org/pipermail/amsat-bb/2015-November/056245.html
None of these reports include the occasions I varied the transmit power
from my Icom IC-2820H 2m/70cm FM mobile radio among its 3 levels (5, 15,
and 50W) when working AO-85. With all of these radios, my original comments
about the KG-UV9D and being able to work AO-85 when the satellite was above
20 degrees elevation appear to be true for all of these radios when used at
the 5-watt transmit power level.
I still plan on finding my IC-W32A and DJ-G7T to try with this satellite,
as well as trying two-radio combinations. As I try other radios, I'll post
my findings here. If anyone else is trying different radios with AO-85,
especially HTs (or other radios with low transmitter power levels), please
post your findings to this list. The AMSAT-BB archives are open to the
public, and searchable via search engines.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx
------------------------------
Message: 7
Date: Tue, 1 Dec 2015 19:52:04 -0100
From: Pedro Sousa <pedro@xxxxxxxxxx.xxxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] HM58 on AO-73 at 22:04
Message-ID: <565E0874.9040808@xxxxxxxxxx.xxxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi all,
For those in Europe, on AO-73 pass starting today at 22:04 UTC, CU7BC in
HM58qm will be active.
I'm "training" him on the job, but go ahead and give him a call if you
hear us chatting.
73 de Pedro CU2ZG
HM77fr
---
Este e-mail foi verificado em termos de v?rus pelo software antiv?rus Avast.
https://www.avast.com/antivirus
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
------------------------------
Message: 8
Date: Tue, 1 Dec 2015 14:54:37 -0600
From: John Spasojevich <johnag9d@xxxxx.xxx>
To: Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISS Audio for Friday Conatct
Message-ID:
<CA+qbou4SLXHF04JC97XTdLEfmFp3D6x8azhRiv4d4o5TvpKhFA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Please join us in listening to the ISS contact with participants at
*Dragonskolan, Ume?, Sweden* on Friday December 4. AOS is anticipated at
10:15 UTC
The duration of the contact is approximately 9 minutes and 30 seconds. The
contact will be a telebridge between NA1SS and LU1CGB in Argentina. The
contact is expected to be conducted in English.
NOTE: Contact is dependent on outcome of the Cygnus launch scheduled for
Thursday December 3. If Launch is successful this contact is a go. If the
launch fails this contact will be rescheduled for another date due to time
constraints.
Dragonskolan is one of the biggest upper secondary schools in Sweden and is
located in central Ume?. Currently hosting 1820 students aged 16-19 and 300
staff; it has recently been renovated to meet modern needs in a stimulating
learning environment.
Audio from this contact will be fed into the:
EchoLink *AMSAT* (101377) Server
Streaming Audio at: https://sites.google.com/site/arissaudio/
Audio on Echolink & web stream is generally transmitted around 20 minutes
prior to the contact taking place so that you can hear some of the
preparation that occurs.
** Contact times are approximate. If the ISS executes a reboost or other
manoeuvre, the AOS (Acquisition Of Signal) time may alter by a few minutes
**
73,
John - AG9D
ARISS Audio Distribution Team
------------------------------
Message: 9
Date: Tue, 1 Dec 2015 16:15:24 -0800
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: "'Robert Bruninga'" <bruninga@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellite Breakup and some debris?)
Message-ID: <003701d12c96$8a9ff3b0$9fdfdb10$@xxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Bob, have you not heard of VacuSat? A new project sponsored by Waste
Management, Inc. Yes, the same folks that pick up your trash at home, have
developed a 'cube sat' the size of a 747, which will orbit earth sucking up
all the space debris. The vehicle is designed for re-entry where the waste
will be dumped just outside Newark, NJ
Stay tuned for developments
73, Ted
K7TRK
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Robert
Bruninga
Sent: Monday, November 30, 2015 8:26 AM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Satellite Breakup and some debris?)
Since this event last week, I am now getting several Conjunction near-miss
reports to PCSAT per day compared to normally I get one a few times a month.
So far, all have been several hundred meter misses. But the debris field
has clearly increased.
Maybe eventually space will get so cluttered that the only applications that
can productively use space are the ones that can keep launching
replacements... only further compounding the problem.... Wonder which comes
first. Global warming or loss of space usability... Bob, Wb4APR
-----Original Message-----
From: Robert Bruninga
Sent: Wednesday, November 25, 2015 2:18 PM
Subject: Satellite Breakup and some debris?)
--------
On 25 November 2015 at approximately 0816z, [multiple objects] were detected
in the vicinity of NOAA 16 (#26536), which may indicate a breakup of the
non-operational satellite. As of 1830z, 19 associated objects have been
cataloged... More pieces may be cataloged as analysis continues...
--------
Just a reminder how messy it is up there.
Bob, WB4APR
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Tue, 1 Dec 2015 20:31:36 -0500
From: "Mark Lunday" <wd4elg@xxxxx.xx.xxx>
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO73, unsuccessful loop test
Message-ID: <000601d12ca1$2fcce910$8f66bb30$@xx.xxx>
Content-Type: text/plain; charset="us-ascii"
I can hear a WA2, but not my own CW signal on the downlink.
Using an Elk for uplink. IC910H. Power at 50%, azimuth only 20 degrees
from center of the Elk.
Just to confirm, uplink center band is 435.140, downlink center band is
145.960.
Mark Lunday, WD4ELG
Greensboro, NC FM06be
wd4elg@xxxx.xxx
http://wd4elg.blogspot.com
------------------------------
Message: 11
Date: Tue, 1 Dec 2015 20:43:36 -0500
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Mark Lunday <wd4elg@xxxxx.xx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AO73, unsuccessful loop test
Message-ID:
<CABzOSOpuqEQe0wgDbULP=ia6VSvGdjH32Y-9VLribPz-Pew41Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
That's correct, however the local oscillator in the transponder is not
stable. You need to add between 6-10 kHz to your uplink frequency depending
on the pass (and it varies during the pass as well).
I was busy during that pass, but I'll be on the next pass at 0255 UTC.
73,
Paul, N8HM
On Tue, Dec 1, 2015 at 8:31 PM, Mark Lunday <wd4elg@xxxxx.xx.xxx> wrote:
> I can hear a WA2, but not my own CW signal on the downlink.
>
> Using an Elk for uplink. IC910H. Power at 50%, azimuth only 20 degrees
> from center of the Elk.
>
> Just to confirm, uplink center band is 435.140, downlink center band is
> 145.960.
>
> Mark Lunday, WD4ELG
> Greensboro, NC FM06be
> wd4elg@xxxx.xxx
> http://wd4elg.blogspot.com
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 12
Date: Tue, 1 Dec 2015 22:12:17 -0500
From: "Mark Lunday" <mlunday@xx.xx.xxx>
To: "'Mark Lunday'" <wd4elg@xxxxx.xx.xxx>, "'AMSAT BB'"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Thanks for the help RE: AO73, unsuccessful loop
test
Message-ID: <000e01d12caf$400e4130$c02ac390$@xx.xxx>
Content-Type: text/plain; charset="us-ascii"
Thanks to all who replied, I will give it another shot tomorrow.
Mark Lunday, WD4ELG
Greensboro, NC FM06be
wd4elg@xxxx.xxx
http://wd4elg.blogspot.com
------------------------------
Message: 13
Date: Tue, 1 Dec 2015 23:00:54 -0500
From: "Mark Lunday" <wd4elg@xxxxx.xx.xxx>
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] A refresher needed...
Message-ID: <000301d12cb6$0ae9a790$20bcf6b0$@xx.xxx>
Content-Type: text/plain; charset="us-ascii"
1. Based upon the AMSAT page, I conclude the following birds are
active: ISS (FM), LILACSAT-2, AO-73, AO-85, SO-50, NO-44, NO-84, FO-29,
XW-2F, AO-07.
2. At the top of the AMSAT satellite status page, there is a blank line
for satellite status, with reports. Is this a new satellite that is not yet
turned over to operations?
3. Which of the following satellites will work when NOT illuminated? I
remember AO-7 and NO-44 won't, and AO-73 will, but not sure about SO-50,
FO-29, NO-84, AO-85, XW-2F.
4. What is the best way to tell if a satellite is illuminated? Could
be before sunrise at my QTH if the bird is east, or after my sunset if the
bird is west. How can I tell?
5. I need more info on APRS. I set it up to relay my position from my
car on 144.39 many years ago, but Bob Bruninga has often said APRS capable
of so much more.
a. Is satellite APRS helpful just for isolated locations, for relaying
information?
b. How long does the satellite transmit the information packet (what is
the lifetime of the packet?)
c. What if the amount of packets to be transmitted by the satellite
takes longer than the visibility of the satellite at my QTH? I won't hear
certain data, right?
d. What is everyone else using satellite APRS for?
Mark Lunday, WD4ELG
Greensboro, NC FM06be
wd4elg@xxxx.xxx
http://wd4elg.blogspot.com
------------------------------
Message: 14
Date: Wed, 2 Dec 2015 09:37:30 +0000
From: Daniel Est?vez <daniel@xxxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] A refresher needed...
Message-ID: <565EBBDA.3050004@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
El 02/12/15 a las 04:00, Mark Lunday escribi?:
Hi Mark,
Lets try to answer some of your questions.
> 1. Based upon the AMSAT page, I conclude the following birds are
> active: ISS (FM), LILACSAT-2, AO-73, AO-85, SO-50, NO-44, NO-84, FO-29,
> XW-2F, AO-07.
Yes. However, LilacSat's transponder is only active some days, as you
can see. Also, NO-44's health is not very good and its giving several
problems. I hear that, for instance, it shouldn't be used over Region 1
(Europe and Africa) to prevent it from transmitting on 144.390 (which is
used by meteor scatter people).
> 2. At the top of the AMSAT satellite status page, there is a blank line
> for satellite status, with reports. Is this a new satellite that is not yet
> turned over to operations?
That's probably nothing. Reports not correctly labelled or a software bug.
> 3. Which of the following satellites will work when NOT illuminated? I
> remember AO-7 and NO-44 won't, and AO-73 will, but not sure about SO-50,
> FO-29, NO-84, AO-85, XW-2F.
AO-7 only works when illuminated. NO-44 I'm not sure about its status.
As I said, it's not doing so well. The rest of them work fine in eclipse.
Also, note that on weekdays AO-73 will only run high-power (300mW)
telemetry when illuminated and transponder and low-power telemetry when
in eclipse. In weekends it's always transponder and low-power telemetry.
> 4. What is the best way to tell if a satellite is illuminated? Could
> be before sunrise at my QTH if the bird is east, or after my sunset if the
> bird is west. How can I tell?
In fact a satellite can be illuminated even if it is over the nigh side
of Earth, because it high above the surface. For instance, AO-7 will
spend about half of the year always illuminated.
If your satellite tracking software doesn't tell you (Gpredict) does,
you could use Illum by DK3WN. Look for it here:
http://www.dk3wn.info/software.shtml
> 5. I need more info on APRS. I set it up to relay my position from my
> car on 144.39 many years ago, but Bob Bruninga has often said APRS capable
> of so much more.
You can send text messages, get weather reports, send "objects" for
locations of interest, etc. Take a look at http://aprs.fi to see what
other people are doing with APRS.
> a. Is satellite APRS helpful just for isolated locations, for relaying
> information?
Not sure. Probably most people use it just for playing. You can do valid
DX QSOs by satellite APRS if that's your thing, also.
> b. How long does the satellite transmit the information packet (what is
> the lifetime of the packet?)
The satellite retransmits the packet almost immediately after receiving
it and only one time. This is the same as a terrestrial digipeater does.
> c. What if the amount of packets to be transmitted by the satellite
> takes longer than the visibility of the satellite at my QTH? I won't hear
> certain data, right?
As I said, the satellite doesn't do store and forward, but rather
repeats the packets immediately. What happens if many people are using
the satellite is that the packets will collide and won't be heard by the
satellite. The same happens with a terrestrial digipeater.
> d. What is everyone else using satellite APRS for?
As I said, probably just for fun, but perhaps there are people in remote
locations using it for relaying some useful data (although you probably
could also use HF APRS for that).
Hope you find this useful. Probably other people can add more
information or another point of view.
73,
Dani M0HXM/EA4GPZ.
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 10, Issue 371
*****************************************
Read previous mail | Read next mail
| |
