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CX2SA > SATDIG 24.08.20 15:47l 813 Lines 31372 Bytes #999 (0) @ WW
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Today's Topics:
1. ANS-236 AMSAT News Service Weekly Bulletins (KI7UNJ Tucker)
2. IC-9700 Remote Control (Stephan Greene)
3. Amateur operator courtesy on Satellite (P. Suryono Adisoemarta)
4. Next Rocket Lab Launch (Wendy and Terry Osborne)
5. Re: IC-9700 Remote Control (Michael Walker)
6. Re: Amateur operator courtesy on Satellite (Nitin Muttin)
7. FOX-1D (AO-92) in safe mode (John E. Amdor IV)
8. Re: FOX-1D (AO-92) in safe mode (Don KB2YSI)
9. Re: FOX-1D (AO-92) in safe mode (nathanjwhite)
10. Re: FOX-1D (AO-92) in safe mode (Andrew Glasbrenner)
----------------------------------------------------------------------
Message: 1
Date: Sat, 22 Aug 2020 17:00:00 -0700
From: KI7UNJ Tucker <ki7unj@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] ANS-236 AMSAT News Service Weekly Bulletins
Message-ID:
<CAPFr_UmQeb6WaxrDvTeqnMoaG+xOgL1-5UmMcLoBjYz_3dsw=w@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
AMSAT NEWS SERVICE
ANS-236
The AMSAT News Service bulletins are a free, weekly news and
information service of AMSAT North America, The Radio
Amateur Satellite Corporation. ANS publishes news related to Amateur
Radio in space including reports on the activities of a worldwide
group of Amateur Radio operators who share an active interest in
designing, building, launching and communicating through analog and
digital Amateur Radio satellites.
The news feed on http://amsat.org publishes news of Amateur Radio
in space as soon as our volunteers can post it.
Please send any amateur satellite news or reports to:
ans-editor at amsat dot org.
In this edition:
* Ballot Return Date is September 15
* Two-Minute Engineering Video Update Available
* New Distance Records
* ORI's Digital Microwave Broadband Communication System Determined to
be Free of ITAR
* SmallSat 2020 Virtual Conference Proceedings Available Online
* Upcoming Satellite Operations
* ARISS News
* Satellite Shorts from All Over
SB SAT @ AMSAT $ANS-236.01
ANS-236 AMSAT News Service Weekly Bulletins
AMSAT News Service Bulletin 236.01
>From AMSAT HQ KENSINGTON, MD.
August 23, 2020
To All RADIO AMATEURS
BID: $ANS-236.01
--------------------------------------------------------------------
Ballot Return Date is September 15
With four weeks of balloting remaining, I think a reminder of
procedures is warranted.
Ballots for the AMSAT board of directors election must be received
by 5 p.m. US Eastern Time on Tuesday, September 15. If you have
received your ballot and wish to vote, please mail your ballot
with sufficient time to arrive by this time.
If you have not received your ballot and were a member of AMSAT on
July 1, please email me at brennanprice@???????.??? to request a
replacement ballot. All such requests that were made by today
(Monday, August 17) have been fulfilled no later than today.
A note to non-US based members: The printed return envelope does
not specify that the return address is in the United States. The
design of the envelope (my effort alone) may be fairly criticized
on this basis. Several non-US members have added USA to the printed
return address and successfully returned the ballot. This is my
recommended remedy, but if for whatever reason it's too late for
that (and I know of one such case), I will gladly send a replacement
(as I have in said case).
I am verifying envelopes against the voter list and keeping them
unopened until the time of counting, when they will be opened face
down and separated from the ballot without immediate counting to
maintain secrecy. This is a key part of verifying that each ballot
going out generates no more than one ballot coming back in.
Presumably out of an understandable but self-defeating desire to
ensure the secrecy of the ballot beyond this procedure, about ten
members have sought to obscure the return address or use a different
envelope, either with no return address or a different return address.
In all but one of those cases, the printed address was
insufficiently obscured, or the alternate address was traceable to
a member who had not yet voted. The attention required to verify the
nonconforming envelope in each case substantially exceeded the
attention normally necessary, and actually increased the possibility
of me inadvertently discerning the contents without opening the
envelope through inspection I would ordinarily forego. Nevertheless,
these envelopes have been accepted for eventual accounting.
[ANS thanks Brennan Price, N4QX, AMSAT Secretary for
the above information.]
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Due to the COVID-19 pandemic, the AMSAT office
is closed until further notice. For details, please visit
https://www.amsat.org/amsat-office-closed-until-further-notice/
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Two-Minute Engineering Video Update Available
Jerry Buxton, N0JY, Vice President-Engineering has published a two-
minute video update on the progress of AMSAT projects. Among the
highlights are:
- The RadFxSat-2 / Fox-1E satellite is ready for delivery and
integration and is expected to launch by the end of the year.
- The University of Maine will use an AMSAT LTM-1 module for command
and control of their upcoming CubeSat mission, MESAT-1. The LTM-1
also provides a linear transponder for amateur radio use. AMSAT is
in discussions with additional partners about flying LTM-1 modules.
- Due to the COVID-19 pandemic, vendors have been delayed in
supplying printed circuit boards for the GOLF-TEE project. The
impact of the pandemic has also affected the amount of time
AMSAT's volunteer engineers have for their hobby work. Completion
of GOLF-TEE is expected by the end of June 2021.
- Dependent on fulfilling its primary mission, the GOLF-TEE satellite
may include a X-band downlink parrot of the V-band uplink and L/S
band uplinks which are planned for GOLF-1.
- Research is underway to place GOLF-1 into a higher orbit while
meeting regulatory requirements.
- GOLF-TEE is a candidate for a launch on an upcoming DoD mission.
You can view Jerry's update at: https://youtu.be/9H4iM1hoVG4.
[ANS thanks Jerry Buxton, N0JY, Vice President-Engineering for the
above information.]
--------------------------------------------------------------------
New Distance Records
Congratulations to Jerome LeCuyer, F4DXV and Joseph Werth, KE9AJ on
extending their record distance on AO-7 by another 140 km! The new
record stands at 8,204.592 km. KE9AJ was in DM79IQ58 and F4DXV was in
JN14CH76.
Jerome also claimed two other records during his trip to JN14. First,
on 10-Aug-2020, he worked VE1VOX in Nova Scotia on AO-92, a distance
of 5,011 km. Three days later, a QSO with Nathan White, N5LEX in FN11
set a new record distance covered of 6,183 km on AO-91. The QSO
occurred at 13:37 UTC on 13-Aug-2020.
[ANS thanks Paul Stoetzer, N8MH, AMSAT Executive Vice President for
the above information.]
--------------------------------------------------------------------
ORI's Digital Microwave Broadband Communication System Determined to
be Free of ITAR
The United States Department of State has ruled favorably on Open
Research Institute's commodity jurisdiction request, finding that
specified ?Information and Software for a Digital Microwave Broadband
Communications System for Space and Terrestrial Amateur Radio Use? is
not subject to State Department jurisdiction under ITAR, the
International Traffic in Arms Regulations.
Export regulations divide both technical information and actual
hardware into three categories. The most heavily restricted
technologies fall under ITAR, which is administered by the State
Department. Technologies subject to more routine restrictions fall
under EAR, the Export Administration Regulations, administered by the
Department of Commerce. Technologies that are not subject to either
set of regulations are not restricted for export.
On 20 February 2020, Open Research Institute (ORI) filed a Commodity
Jurisdiction (CJ) Request with the US State Department, seeking to
establish that key technologies for amateur radio are not subject to
State Department jurisdiction. ?Information and Software for a Digital
Microwave Broadband Communications System for Space and Terrestrial
Amateur Radio Use? was assigned the case number CJ0003120. On 11
August 2020, the case received a successful final determination: the
technology is not subject to State Department jurisdiction.
The Final Determination letter can be found at
https://tinyurl.com/ANS-236-ORI
[ANS thanks Open Research Institute, Inc., for the above information]
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AMSAT's GOLF Program is about getting back to higher orbits, and it
all begins with GOLF-TEE - a technology demonstrator for deployable
solar panels, propulsion, and attitude control. Come along for the
ride. The journey will be worth it!
https://tinyurl.com/ANS-GOLF
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SmallSat 2020 Virtual Conference Proceedings Available Online
The 34th Annual Small Satellite Conference was a virtual event hosted
by SmallSat.org and Utah State University, Logan, Utah. The event
attracted 8,100 participants over three days August 1-3, 2020. With
the conference theme, "Space Mission Architectures - Infinite
Possibilities", the conference explored the realm of possible space
mission architectures and how they can be practically achieved to
support the diverse needs of the global space community.
Organized along twelve technical tracks, all 162 presentations are
available to the public. Additionally, literally hundreds of posters
can be downloaded for viewing. Especially useful is a search function
on the site that can search keywords to help find presentation and
posters that deal with specific topics.
For those interested in the future of small satellites, including
those in the Amateur Radio Satellite Service, there is one especially
pertinent presentation entitled " Small Satellite Regulation in 2020"
with attorneys Lynne Montgomery and Christopher Bair of Wilkinson
Barker Knauer LLP. In this twelve minute presentation,
Ms. Montgomery thoroughly covers the range of regulations affecting
small satellite operations, the agencies involved, licensing
procedures and what future legal burdens are looming for small
satellite operators.
The complete collection of presentations and posters can be seen at:
https://smallsat.org/.
[ANS thanks SmallSat.org for the above information.]
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Need new satellite antennas? Purchase Arrows, Alaskan Arrows,
and M2 LEO-Packs from the AMSAT Store. When you purchase through
AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/
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Upcoming Satellite Operations
* Quick Hits:
DM97/98 & EM08/09, 8/29 & 8/30: Super Rover @????? is heading out
for the Kansas QSO party and N0E. More to come.
* Major Roves:
@?????? is heading out to Idaho DN24,DN25,DN26 DN34, DN16, DN15, and
DN14 starting August 15th. Then moving into Montana for DN35,DN36,
DN37, DN38 DN49 DN47. He will be out a total of 5-6 weeks. Mostly
FM some linear. Will post to twitter details.
[ANS thanks Paul Overn, KE0PBR for the above information.]
--------------------------------------------------------------------
ARISS News
* Upcoming Contacts:
Kopernik Observatory & Science Center, Vestal, NY, direct via K2ZRO
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Chris Cassidy KF5KDR
Contact is go for: Wed 2020-08-19 18:21:55 UTC 85 deg
Watch for live stream starting about 20 to 30 minutes ahead
of AOS at: https://youtu.be/1Pwcc2rilz0
[ANS thanks Charlie Sufana, AJ9N for the above information.]
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AMSAT, along with our ARISS partners, is developing an amateur
radio package, including two-way communication capability, to
be carried on-board Gateway in lunar orbit.
Support AMSAT's projects today at https://www.amsat.org/donate/
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Shorts from All Over
* NASA At Home Offerings Updated Regularly
As was reported before, NASA continually offers a variety of videos,
podcasts, virtual tours, e-books and activities. This service has
offerings that are of interest to adults as well as students with an
interest in space exploration. The lineup changes weekly so, if you
haven't been back in a while, take a moment to see the current
assortment at:
https://www.nasa.gov/specials/nasaathome/index.html
[ANS thanks NASA for the above information.]
* Build a Simple ISS Tracker with Raspberry Pi
Fancy tracking the ISS?s trajectory? Looking for a project beyond
using your smart phone app? All you need is a Raspberry Pi, an
e-paper display, an enclosure, and a little Python code. Check out
The MagPi Magazine issue #96. The download is free and can be
found at: https://magpi.raspberrypi.org/issues/96.
[ANS thanks RaspberryPi.org for the above information.]
*ARS Technica Review Launch Prospects
ARS reviews four smallsat rockets that might launch this year:
Astra (this month?), Firefly (November?), Virgin Orbit (EOY?),
and ExPace?s Kuaizhou-11 (?). Read it at https://bit.ly/3gkyLv6.
[ANS thanks The Orbital Index for the above information]
*Faster Than the Speed of Light?
If you?re a fan of science fiction, chances are you've
encountered spaceships that use a warp drive, ?fold space,?
or ?jump? drive. Unfortunately, the immutable laws of physics
tell us that this is simply not possible. Those same laws,
however, also tell us that near-light-speed travel comes
with all sorts of challenges. Luckily for all of us, NASA
addresses these in a recently-released animated video that
covers all the basics of interstellar travel! See it at:
https://youtu.be/l4u4wV_dOi0
[ANS thanks Universe Today for the above information]
*NASA Investigating Air Leak on ISS
NASA is tracking down the source of a minor air leak on the
International Space Station. Crewmembers of the station's
current Expedition 63 are in no immediate danger and will
spend the weekend in the orbiting laboratory's Russian segment,
inside the Zvezda service module, NASA officials said in an
update on Thursday, 20 August. Full story at https://bit.ly/34lVnZZ
[ANS thanks Space.com for the above information]
--------------------------------------------------------------------
In addition to regular membership, AMSAT offers membership in the
President's Club. Members of the President's Club, as sustaining
donors to AMSAT Project Funds, will be eligible to receive
additional benefits. Application forms are available from the
AMSAT office.
Primary and secondary school students are eligible for membership at
one-half the standard yearly rate. Post-secondary school students
enrolled in at least half time status shall be eligible for the
student rate for a maximum of six post-secondary years in this
status.
Contact Martha at the AMSAT office for additional student
membership information.
73,
This week's ANS Editor,
Casey Tucker, KI7UNJ
ki7unj at amsat dot org
Sent via AMSAT-BB at amsat.org. 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!
------------------------------
Message: 2
Date: Sat, 22 Aug 2020 20:54:50 -0400
From: Stephan Greene <ks1g04@?????.???>
To: Amsat-bb <amsat-bb@?????.???>
Subject: [amsat-bb] IC-9700 Remote Control
Message-ID:
<CACZz0S1ft9P9h+PB-oTMZ+OGGApOM72QrzvCBDjPi94MXmbB4Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Looking at setting up a remote base satellite station to escape local
increasing RFI, foliage, adverse terrain etc... I've been studying
successful implementations using TS2000, FlexRadios, etc.and software
SatPC32, FLRig, DXCommander, VNC, NX, etc... and may end up going one of
those ways. Also looking at IC-9700.
If you've successfully used an IC-9700 remotely, please email me direct.
What software are you using, remote access method, additional accessories
or items you found particularly handy.
Thanks in advance! 73 de KS1G
------------------------------
Message: 3
Date: Sun, 23 Aug 2020 04:09:46 +0000 (UTC)
From: "P. Suryono Adisoemarta" <yono_adisoemarta@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] Amateur operator courtesy on Satellite
Message-ID: <313891450.4567871.1598155786562@????.?????.???>
Content-Type: text/plain; charset=UTF-8
So where is the amateur operator courtesy on Amateur Satellite ?
Apologize I'm going to vent-off after this morning's (23 Aug, 01:20 UTC)
SSTV exercise on IO-86 satellite
First is a background of IO-86, which is the secondary (amateur radio)
payload on Indonesia's LAPAN A2/ORARI that was completely designed by
AMSAT-ID team with LAPAN's satellite design team.
This amateur payload was designed primarily to assist in disaster
communication while regular communication lines are off utilizing only
handheld radio (HT) with a simple beam antenna, thus the payload has a
high-gain receiver antenna and relatively high power (5W) transmitter. IO-86
has performed flawlessly in several emergency communication (such as
earthquake in Lombok, 2017, tsunami in Palu 2018 and flashflood in Masamba,
2020, all using HT).
To ensure availability of amateur radio operators ready for future emergency
communication, AMSAT-ID has been conducting various communication exercises
thru IO-86.
On top of Voice and APRS communication, IO-86 also supports SSTV mode where
one can transmit pictures of the emergency location, thru the voice FM
repeater.
So this morning, to mimic an immediate request for SSTV, part of Emergency
Readiness component of IO-86, I transmit on IO-86 requesting all stations to
standby, several times, to clear the frequency for SSTV transmission. But a
high-power station, from a neighboring country, kept overpowering IO-86
with his call for a QSO.
Repeated requests to standby are just kept being ignored.
So, where is the courtesy of amateur operators of a standby request? To stop
transmitting and monitor the frequency as maybe there is another activity
being conducted.
I'll share the lesson learns from the SSTV thru IO-86 exercise in another
email
73 de Yono - YD0NXX
AMSAT-ID
Jakarta, Indonesia
------------------------------
Message: 4
Date: Sun, 23 Aug 2020 14:00:59 +1200
From: Wendy and Terry Osborne <wandtosborne@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>, Roger Bould
<rogannbould@?????.???>, "Selwyn ZL2BJO@?????.???? <ZL2BJO@?????.???>
Subject: [amsat-bb] Next Rocket Lab Launch
Message-ID: <e88242bf-c6e8-fdaf-9a45-c3e57f6a8098@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi Folks,
Next Rocket Lab Launch is due Thurs 27th at 03:05 UTC.
See: https://twitter.com/RocketLab/status/1296886523212656641
Expect the launch to be streamed as usual.
There may be updates on their twitter feed during the week.
73,
Terry Osborne ZL2BAC
------------------------------
Message: 5
Date: Sun, 23 Aug 2020 11:57:17 -0400
From: Michael Walker <va3mw@??????????.???>
To: Stephan Greene <ks1g04@?????.???>
Cc: Amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] IC-9700 Remote Control
Message-ID:
<CA+33ts5F1g_14pgy4+B+q9aRxktbzpi04Znr9Ms4erE8Xtndrg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Stephan
I can tell you about Flex if you like. I use a 6600M with 2 transverters
remote with SatPC32. It is nice to have a much more detailed waterfall
than the IC-9700 (down to about 5hz/pixel).
I could do it with the IC-9700 I have, but the configuration is a bit more
complicated and I will actually be parting with the IC-9700 sometime soon
since I don't do any 1.2Ghz.
Mike va3mw
On Sun, Aug 23, 2020 at 11:03 AM Stephan Greene via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Looking at setting up a remote base satellite station to escape local
> increasing RFI, foliage, adverse terrain etc... I've been studying
> successful implementations using TS2000, FlexRadios, etc.and software
> SatPC32, FLRig, DXCommander, VNC, NX, etc... and may end up going one of
> those ways. Also looking at IC-9700.
>
> If you've successfully used an IC-9700 remotely, please email me direct.
> What software are you using, remote access method, additional accessories
> or items you found particularly handy.
>
> Thanks in advance! 73 de KS1G
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 6
Date: Mon, 24 Aug 2020 04:24:43 +0000 (UTC)
From: Nitin Muttin <vu3tyg@?????.??.??>
To: AMSAT BB <amsat-bb@?????.???>, "P. Suryono Adisoemarta"
<yono_adisoemarta@?????.???>
Subject: Re: [amsat-bb] Amateur operator courtesy on Satellite
Message-ID: <1015184428.3615409.1598243083620@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hi Yono,
I have shared this in the VU satellite working group.
73
Nitin [VU3TYG]
On Sunday, 23 August, 2020, 08:40:15 pm IST, P. Suryono Adisoemarta via
AMSAT-BB <amsat-bb@?????.???> wrote:
So where is the amateur operator courtesy on Amateur Satellite ?
Apologize I'm going to vent-off after this morning's (23 Aug, 01:20 UTC)
SSTV exercise on IO-86 satellite
First is a background of IO-86, which is the secondary (amateur radio)
payload on Indonesia's LAPAN A2/ORARI that was completely designed by
AMSAT-ID team with LAPAN's satellite design team.
This amateur payload was designed primarily to assist in disaster
communication while regular communication lines are off utilizing only
handheld radio (HT) with a simple beam antenna, thus the payload has a
high-gain receiver antenna and relatively high power (5W) transmitter. IO-86
has performed flawlessly in several emergency communication (such as
earthquake in Lombok, 2017, tsunami in Palu 2018 and flashflood in Masamba,
2020, all using HT).
To ensure availability of amateur radio operators ready for future emergency
communication, AMSAT-ID has been conducting various communication exercises
thru IO-86.
On top of Voice and APRS communication, IO-86 also supports SSTV mode where
one can transmit pictures of the emergency location, thru the voice FM
repeater.
So this morning, to mimic an immediate request for SSTV, part of Emergency
Readiness component of IO-86, I transmit on IO-86 requesting all stations to
standby, several times, to clear the frequency for SSTV transmission. But a
high-power station, from a neighboring country,? kept overpowering IO-86
with his call for a QSO.
Repeated requests to standby are just kept being ignored.
So, where is the courtesy of amateur operators of a standby request? To stop
transmitting and monitor the frequency as maybe there is another activity
being conducted.
I'll share the lesson learns from the SSTV thru IO-86 exercise in another
email
73 de Yono - YD0NXX
AMSAT-ID
Jakarta, Indonesia
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Sun, 23 Aug 2020 23:24:35 -0500
From: "John E. Amdor IV" <jamdoriv@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] FOX-1D (AO-92) in safe mode
Message-ID: <B4F1DC07-8463-4E95-A472-8C047F33C53E@?????.???>
Content-Type: text/plain; charset=utf-8
Today (8/24) at ~4:16 UTC I was attempting to uplink to AO-92 when Veronica
announced ?FOX-1 Delta, Safe Mode?. Does anyone know what put AO-92 in safe
mode, and will this happen every night?
KE0NEV
------------------------------
Message: 8
Date: Mon, 24 Aug 2020 08:36:19 -0400
From: Don KB2YSI <kb2ysi@?????.???>
To: "John E. Amdor IV" <jamdoriv@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FOX-1D (AO-92) in safe mode
Message-ID:
<CAAJiE8NRejveA729ToQo2r9JR8ccamg=gycXbKy-OvVxG7Ju0g@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
>From my very limited knowledge, the batteries are dropping to a voltage
during eclipse that safe mode is triggered to prevent the batteries from
discharging too far and thus preventing damage. Once the satellite is back
into illumination it should return to normal operations once the batteries
have charged.
AGAIN, this is MY understanding of the situation, and in no way reflects an
officatial AMSAT response nor might be accurate.
On Mon, Aug 24, 2020 at 2:35 AM John E. Amdor IV via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Today (8/24) at ~4:16 UTC I was attempting to uplink to AO-92 when
> Veronica announced ?FOX-1 Delta, Safe Mode?. Does anyone know what put
> AO-92 in safe mode, and will this happen every night?
>
> KE0NEV
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
--
73,
Don KB2YSI
https://www.hamqth.com/kb2ysi
------------------------------
Message: 9
Date: Mon, 24 Aug 2020 06:50:23 +0000 (UTC)
From: nathanjwhite <nathanjwhite@????????.???>
To: "John E. Amdor IV" <jamdoriv@?????.???>, <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FOX-1D (AO-92) in safe mode
Message-ID: <362069836.5305571.1598251823710@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hi John,?AO-92 has been experiencing?low battery voltage during?many night
time passes over the last several weeks. While the satellite is in eclipse
voltage has been dropping low enough (3.6v IIRC) to cause an automatic shift
to safe mode. It emerges from eclipse toward?the end of night passes over
North America and the transponder will then switch on, usually with a minute
or two remaining in the pass. At this time as far as I know there is not any
way to prevent?this as it appears to be due to a failing battery situation.
NateN5LEX
On Monday, August 24, 2020, 1:28 AM, John E. Amdor IV via AMSAT-BB
<amsat-bb@?????.???> wrote:
Today (8/24) at ~4:16 UTC I was attempting to uplink to AO-92 when Veronica
announced ?FOX-1 Delta, Safe Mode?. Does anyone know what put AO-92 in safe
mode, and will this happen every night?
KE0NEV
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Message: 10
Date: Mon, 24 Aug 2020 09:32:05 -0400
From: "Andrew Glasbrenner" <glasbrenner@??????????.???>
To: "'Don KB2YSI'" <kb2ysi@?????.???>, "'John E. Amdor IV'"
<jamdoriv@?????.???>
Cc: 'AMSAT BB' <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FOX-1D (AO-92) in safe mode
Message-ID: <00d801d67a1a$f5c6c070$e1544150$@??????????.???>
Content-Type: text/plain; charset="utf-8"
Hi Don,
All correct, except auto safe mode ends as soon as eclipse does, when the
bus voltage goes over 3.6. The batteries will charge then for the next 60
minutes or so until the next eclipse.
As we move to winter in the northern hemisphere, the end of the eclipse
should shift over the pole and to the beginning of the descending part of
the orbit, and this issue should change for at least the northern hemisphere
ops.
73, Drew KO4MA
AMSAT VP Operations
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Don KB2YSI via
AMSAT-BB
Sent: Monday, August 24, 2020 8:36 AM
To: John E. Amdor IV <jamdoriv@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FOX-1D (AO-92) in safe mode
>From my very limited knowledge, the batteries are dropping to a voltage
during eclipse that safe mode is triggered to prevent the batteries from
discharging too far and thus preventing damage. Once the satellite is back
into illumination it should return to normal operations once the batteries
have charged.
AGAIN, this is MY understanding of the situation, and in no way reflects an
officatial AMSAT response nor might be accurate.
On Mon, Aug 24, 2020 at 2:35 AM John E. Amdor IV via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Today (8/24) at ~4:16 UTC I was attempting to uplink to AO-92 when
> Veronica announced ?FOX-1 Delta, Safe Mode?. Does anyone know what put
> AO-92 in safe mode, and will this happen every night?
>
> KE0NEV
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
--
73,
Don KB2YSI
https://www.hamqth.com/kb2ysi
_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
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Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
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Subject: Digest Footer
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Sent via amsat-bb@?????.???.
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Not an AMSAT member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 352
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