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CX2SA > SATDIG 20.03.16 05:05l 873 Lines 27734 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Terms (Arthur Feller, W4ART)
2. Upcoming ARISS Contact Schedule as of 2016-03-19 05:30 UTC
(AJ9N@xxx.xxxx
3. Re: Terms (skristof@xxxxxxx.xxxx
4. ADS-B (Thomas Doyle)
5. Re: ADS-B (Luc Leblanc)
6. Alinco 440 FM - FS, 10% to AMSAT (Chris Spacone)
7. Re: Optical shaft encoders (Alfa Spid RAS-HR & BIG RAS-HR)
(Clayton W5PFG)
8. SAT PC 32 AND YAESU FT-847 (jeffory broughton)
9. Re: ADS-B (Stefan Wagener)
10. Re: cheap radio (Joseph Armbruster)
11. ANS-080 AMSAT News Service Weekly Bulletins (Lee McLamb)
12. Two arrow antennas & tripod for sale (jeffory broughton)
13. Alaskan Arrow sold, thanks all. (jeffory broughton)
----------------------------------------------------------------------
Message: 1
Date: Fri, 18 Mar 2016 19:49:46 -0400
From: "Arthur Feller, W4ART" <afeller@xxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Terms
Message-ID: <08B4D80D-92A8-449F-92BE-F2E6916FE96C@xxxx.xxx>
Content-Type: text/plain; charset=utf-8
Hi!!
Seems that many folks need clarification of some common operational terms.
Here are definitions from the radio regulations (2012 edition).
RR 1.125 simplex operation: Operating method in which transmission is made
possible
alternately in each direction of a telecommunication channel, for example,
by means of manual
control2.
RR 1.126 duplex operation: Operating method in which transmission is possible
simultaneously in both directions of a telecommunication channel2.
RR 1.127 semi-duplex operation: A method which is simplex operation at one
end of the
circuit and duplex operation at the other.2
2 1.125.1, 1.126.1 and 1.127.1 In general, duplex operation and semi-duplex
operation require two frequencies
in radiocommunication; simplex operation may use either one or two.
I hope this helps.
73, art?..
W4ART Arlington VA
To thrive in life, you need three bones: a wish bone, a back bone, and a
funny bone.
- Reba McEntire
http://afeller.us <http://afeller.us/>
------------------------------
Message: 2
Date: Sat, 19 Mar 2016 02:07:38 -0400
From: AJ9N@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2016-03-19
05:30 UTC
Message-ID: <174617.6d209171.441e46a9@xxx.xxx>
Content-Type: text/plain; charset="ISO-8859-1"
Upcoming ARISS Contact Schedule as of 2016-03-19 05:30 UTC
Quick list of scheduled contacts and events:
Walter Jackson Elementary, Decatur, Alabama, direct via N8DEU
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Timothy Peake KG5BVI
Contact was successful: Fri 2016-03-18 13:53:49 UTC 69 deg (***)
****************************************************************************
**
The next window to submit a proposal for an upcoming contact is now open.
The window is open from 2016-02-15 to 2016-04-15 and would be for contacts
between 2017-01-01 and 2017-06-30.
Check out the ARISS website http://www.ariss.org/ or the ARRL website
http://www.arrl.org/hosting-an-ariss-contact for full details.
****************************************************************************
**
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.
****************************************************************************
***
All ARISS contacts are made via the Ericsson radio unless otherwise noted.
****************************************************************************
***
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
Satoshi 7M3TJZ with 116
Francesco IK?WGF with 116
****************************************************************************
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 2016-03-19 05:30 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 1037. (***)
Each school counts as 1 event.
Total number of ARISS ISS to earth school contacts is 1002. (***)
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is 47.
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, Rhode Island, South Dakota,
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 2016-03-19 05:30 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. 46 on orbit
Tim Kopra KE5UDN
Timothy Peake KG5BVI
Yuri Malenchenko RK3DUP
****************************************************************************
73,
Charlie Sufana AJ9N
One of the ARISS operation team mentors
------------------------------
Message: 3
Date: Sat, 19 Mar 2016 08:22:41 -0400
From: skristof@xxxxxxx.xxx
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Terms
Message-ID: <e7d7b7d09500eaf32604388a37d8635d@xxxxxxx.xxx>
Content-Type: text/plain
So, I can't talk and listen at the same time, which is simplex, but the
guy at the other end of the satellite knows what he's doing and can talk
and listen at the same time, which is duplex, therefore we are doing
semi-duplex. I think that's what I said before, but I deleted that stuff
already.
Steve AI9IN
On 2016-03-18 19:49, Arthur Feller, W4ART wrote:
> Hi!!
>
> Seems that many folks need clarification of some common operational terms.
Here are definitions from the radio regulations (2012 edition).
>
> RR 1.125 simplex operation: Operating method in which transmission is made
possible
> alternately in each direction of a telecommunication channel, for example,
by means of manual
> control2.
>
> RR 1.126 duplex operation: Operating method in which transmission is
possible
> simultaneously in both directions of a telecommunication channel2.
>
> RR 1.127 semi-duplex operation: A method which is simplex operation at one
end of the
> circuit and duplex operation at the other.2
>
> 2 1.125.1, 1.126.1 and 1.127.1 In general, duplex operation and
semi-duplex operation require two frequencies
> in radiocommunication; simplex operation may use either one or two.
>
> I hope this helps.
>
> 73, art.....
> W4ART Arlington VA
>
> To thrive in life, you need three bones: a wish bone, a back bone, and a
funny bone.
> - Reba McEntire
>
> http://afeller.us [1] <http://afeller.us/ [2]>
>
> _______________________________________________
> 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 [3]
Links:
------
[1] http://afeller.us
[2] http://afeller.us/
[3] http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Sat, 19 Mar 2016 16:37:01 -0500
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] ADS-B
Message-ID:
<CAHnRQR+LLScGFma=Havst25__-N2awBcmPC2G4s6-Jd13X8pxQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Anyone have any experience receiving and decoding ADS-B signals from their
ground station. If so please give me a shout.
tnx & 73 W9KE Tom Doyle
--
Sent from my computer.
tom ...
------------------------------
Message: 5
Date: Sat, 19 Mar 2016 18:06:20 -0400
From: "Luc Leblanc" <lucleblanc6@xxxxxxxxx.xx>
To: AMSAT-BB@xxxxx.xxx
Subject: Re: [amsat-bb] ADS-B
Message-ID: <56EDCD5C.2820.1E6A56@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
I'm a tracking station for flighttracker24
https://www.flightradar24.com/45.45,-75.25/7
> Anyone have any experience receiving and decoding ADS-B signals from their
> ground station. If so please give me a shout.
>
> tnx & 73 W9KE Tom Doyle
>
> --
>
> Sent from my computer.
>
> tom ...
> _______________________________________________
> 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
Luc Leblanc VE2DWE
------------------------------
Message: 6
Date: Sat, 19 Mar 2016 15:06:38 -0700
From: "Chris Spacone" <cspacone@xxxxx.xx.xxx>
To: <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Alinco 440 FM - FS, 10% to AMSAT
Message-ID: <001701d1822b$9c980c70$d5c82550$@xxxxx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"
All,
Hopefully I'm not violating any rules regarding posting items for sale. I'm
cleaning out the garage and have an Alinco 435 for sale. The link points to
pictures on dropbox
(https://www.dropbox.com/sh/0j8r3xe5zlekrdr/AADbEZkWB3-r9VvjduFe1qJva?dl=0)
If you are interested please contact me off-list.
10% of sale goes to AMSAT!
Asking $200.00 plus shipping of your choice (example, USPS Priority, first
class, UPS Fedex) with payment via PayPal.
73,
Chris Spacone, KD6OUB
2516 Maricopa St.
Torrance, CA 90503
cspacone@xxxxx.xx.xxx <mailto:cspacone@xxxxx.xx.xxx>
------------------------------
Message: 7
Date: Sat, 19 Mar 2016 17:11:11 -0500
From: Clayton W5PFG <w5pfg@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Cc: Zach Leffke <zleffke@xx.xxx>
Subject: Re: [amsat-bb] Optical shaft encoders (Alfa Spid RAS-HR & BIG
RAS-HR)
Message-ID: <56EDCE7F.9010205@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Since my Alfa Spid RAS-HR after Christmas was installed, it requires
calibration to 0 azimuth and 0 elevations weekly. In a given week,
elevation and azimuth both tend to drift 10-15 degrees. It varies based
on the number of tracked satellites in the given period.
Not only is this issue annoying to a manned station, it makes remote
operation of my station especially annoying.
Finally, as others have mentioned, there is a potentially dangerous
situation that has occurred more than once. While I have feed line and
rotor loops for approximately 720 degrees of rotation, it is not a
parameter I would like to utilize. I would prefer to stay somewhere in
the range of 540 degrees to be safe and not stretch any cabling. On
more than one occasion, the MD-01 controller decided it lost its mind
and was continuing to turn far past the command that had been sent to
it. Fortunately on these occasions, I was watching the rotor interface
closely and was able to manually send a stop command. Thanks to Zach
Leffke, I will now refer to this Alfa Spid RAS-HR & MD-01 feature as
undocumented "runaway feedback" mode.
I'm using shielded #18 wire running approximately 50' from the rotor
sensor output to the controller. There are 6 conductors in the same
bundle which I'm breaking out for the 2 rotors (az & el.) Had there
been better documentation (any,) I might have used two separate,
shielded 3 conductor cables.
As others have stated, the Alfa Spid RAS-HR (or it's big brother) have
been very reliable minus this strange anomaly.
One course of action in my shack recently has been to bypass SatPC32's
spid.exe and utilize PstRotator. It has some added benefit to allow me
to use greater than 450 degrees of azimuth rotation. It also allows me
to set fixed limits on az and el rotation capabilities of the Alfa Spid.
However, it will not prevent the runaway feedback.
73
Clayton
W5PFG
On 3/16/2016 13:10, Robert McGwier wrote:
> I would like to consider adding optical shaft encoders to augment or
> replace the hall effect sensors in use on an Alfa Spid az/el installation.
> We have the high resolution sensors and are experiencing some annoying
> anomalies that have been very difficult to trace and are detrimental to
> autonomous operation at our ground station at Virginia Tech.
>
> Any information or help would be appreciated.
>
> 73s
> Bob
> N4HY
> _______________________________________________
> 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: 8
Date: Sat, 19 Mar 2016 18:22:43 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] SAT PC 32 AND YAESU FT-847
Message-ID:
<CACm2je19ky4Qdqez8COLf=udqYGx3KSyzOsEryDdntaLA7AuPA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
If I turn the vfo knob on the ft847 too fast , it will change modes from
lsb to usb on the radio.if I turn off cat cotrol
And turn it on again it cures the problem.
I have two ft 847 radios,it have tried both of them with the same results.
What am I doing wrong ?
Jeff
WB8RJY
------------------------------
Message: 9
Date: Sat, 19 Mar 2016 18:23:31 -0500
From: Stefan Wagener <wageners@xxxxx.xxx>
To: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
Cc: AMSAT BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] ADS-B
Message-ID:
<CAKu8kHA2QoXOZZ5mDV6YkdDiWq_2GvuwsKPpLP2VCMTwSwnpZw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi Tom,
what do you need to know? I am running F-CYQK1 .... 24/7,
Stefan
On Sat, Mar 19, 2016 at 5:06 PM, Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
wrote:
> I'm a tracking station for flighttracker24
>
> https://www.flightradar24.com/45.45,-75.25/7
>
> > Anyone have any experience receiving and decoding ADS-B signals from
> their
> > ground station. If so please give me a shout.
> >
> > tnx & 73 W9KE Tom Doyle
> >
> > --
> >
> > Sent from my computer.
> >
> > tom ...
> > _______________________________________________
> > 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
>
>
>
> Luc Leblanc VE2DWE
>
>
>
>
>
>
>
> _______________________________________________
> 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: Sat, 19 Mar 2016 21:05:59 -0400
From: Joseph Armbruster <josepharmbruster@xxxxx.xxx>
To: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] cheap radio
Message-ID:
<CADkz4c_1HWD0e_SK7ZngGFTbds-btbkWNx-HGNd6GGYoeci73g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
You can find them on amazon for slightly cheaper. And... if you're a
prime member, free shipping!
Joe
On Fri, Mar 18, 2016 at 1:42 PM, Bob- W7LRD <w7lrd@xxxxxxx.xxx> wrote:
> found this on Ebay-Patrick will know if it works well on satellites. I got
one just because it's so cheap.
>
http://www.ebay.com/itm/111917016904?_trksid=p2057872.m2749.l2649&ssPageName=S
TRK%3AMEBIDX%3AIT
> 73 Bob w7LRD
> _______________________________________________
> 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: 11
Date: Sat, 19 Mar 2016 22:07:29 -0400
From: Lee McLamb <ku4os@xxx.xx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ANS-080 AMSAT News Service Weekly Bulletins
Message-ID: <56EE05E1.8090405@xxx.xx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
AMSAT NEWS SERVICE
ANS-080
The AMSAT News Service bulletins are a free, weekly news and infor-
mation 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://www.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.org.
In this edition:
* AMSAT Forum Speakers at Dayton
* Just-Launched ISS Expedition 47/48 Crew Increment Includes Two Radio
Amateurs
* UK Student Balloon Crosses Pacific
SB SAT @ AMSAT $ANS-080.01
ANS-080 AMSAT News Service Weekly Bulletins
AMSAT News Service Bulletin 080.01
From AMSAT HQ Kensington, MD.
March 20, 2016
To All RADIO AMATEURS
BID: $ANS-080.01
AMSAT Forum Speakers at Dayton
The AMSAT forum will be Saturday morning from 11:15 a.m. through 1:30 p.m.
in Forum Room 5. See the commercial vendor layout map in the Hamvention
program or the Hamvention website for the location of Forum Room 5 (same
as the last few years).
The following speakers will be presenting at the AMSAT Forum:
Moderator: Mark Hammond, N8MH
"AMSAT Status Report" Barry Baines, WD4ASW, AMSAT-NA President, will
highlight recent activities within AMSAT and discuss some of our
challenges, accomplishments, projects, and any late breaking news.
"AMSAT-NA Satellite Program" Jerry Buxton, N0JY, AMSAT-NA Engineering Vice
President, will review the upcoming launches of four Fox spacecraft and
exciting new engineering developments.
"AMSAT's HEO and GSO Plans" Bob McGwier, N4HY, AMSAT-NA Director, will
discuss AMSAT-NA opportunities for High Earth Orbit and Geo-Synchronous
Orbit satellites.
"AMSAT Satellite Operations" Drew Glasbrenner, KO4MA, AMSAT-NA Operations
Vice President, will survey the current operational amateur satellites, as
well as those planned for launch in the next year.
"ARISS Report 2016" Frank Bauer, KA3HDO, AMSAT-NA Vice President for Human
Spaceflight, will discuss ARISS developments & operation on the
International Space Station.
"Teaching STEM Using the Fox Satellites? Joe Spier, K6WAO, AMSAT-NA
Educational Relations Vice President, will explain how the Fox MEMS
gyroscopes, radiation experiments, and cameras will be used to teach
Science, Technology, Engineering, and Math (STEM).
[ANS thanks Steve, N9IP, for the above information]
---------------------------------------------------------------------
Just-Launched ISS Expedition 47/48 Crew Increment Includes Two Radio
Amateurs
The Expedition 47/48 crew increment of Astronaut Jeff Williams, KD5TVQ, and
Cosmonauts Oleg Skripochka, RN3FU, and Alexey Ovchinin, is on its way to
the
International Space Station (ISS). Their Soyuz TMA-20M launched from the
Baikonur Cosmodrome in Kazakhstan on March 18 at 2126 UTC. The trio now is
safely in orbit.
?During their 6-month mission, the expedition crew members will facilitate
approximately 250 research investigations and technology demonstrations not
possible on Earth,? NASA said. ?Science conducted also will enable
future long-
duration human and robotic exploration into deep space and on the agency?s
journey to Mars.?
Williams, Skripochka, and Ovchinin will join Expedition 47 Commander Tim
Kopra,
KE5UDN, European Space Agency astronaut Tim Peake, KG5BVI/GB1SS, and
cosmonaut
Yuri Malenchenko, RK3DUP. Williams will take command of the station on
June 4
for Expedition 48. The three will return to Earth in early September.
This mission marks Williams? fourth spaceflight and will be his third long-
duration stay on the orbiting laboratory ? a first for an American. It?s
also
his first time back to the ISS since its completion in 2011. By the time
his
duty tour ends in September, Williams will become the new American
record holder
for cumulative days in space ? 534 ? surpassing Expedition 46 Commander
Scott
Kelly, who wrapped up his 1-year mission on March 1.
[ANS thanks ARRL for the above information]
---------------------------------------------------------------------
UK Student Balloon Crosses Pacific
On Thursday, March 17 the UBSEDS14 balloon, launched by University of
Bristol
students, had successfully crossed the Pacific and was above Arizona,
having
traveled over 24,500 km since launch. By March 19 the balloon had
crossed the
United States and was headed out across the Atlantic Ocean.
The University of Bristol Students for the Exploration and Development
of Space
(UBSEDS) launched their balloon on Monday, March 8. Powered by a single AA
Lithium Energiser Battery (LR91) the balloon has been transmitting about
5dBm of
Contestia 16/1000 on 434.600 MHz USB at 4 minute intervals as well as APRS
during its flight at an altitude of about 11,000m.
The balloon uses the error-correcting Contestia 16/1000 mode on 434.6MHz
USB.
The transmission power on this band was measured to be +5dBm on a
similar board,
which is well below the +10dBm limit for ISM band operation. Each packet
was
preceded by 10 seconds of 1Hz pips for manual alignment and a RSID tone for
automatic alignment with suitable software (dl-fldigi for example). For
many
countries the balloon transmits APRS packets on local frequencies. In
particular
this is 144.8MHz in Europe, 144.66MHz in Japan and 144.39MHz in North
America.
The balloon has a diameter of 1.5m and the payload weighs just 21.3 grams.
Despite the weight constraints the team have managed to employ
sophisticated
Geofencing technology to prevent the balloon transmitting when over certain
countries and also to select different APRS frequencies depending on the
territory being overflown.
UBSEDS14 information is available at
http://www.bristol-seds.co.uk/hab/flight/2016/03/07/ubseds14.html
UBSEDS14 balloon launch
http://www.southgatearc.org/news/2016/march/ubseds14_balloon_launches_today.ht
m
One of the students involved in the project is Richard Meadows M0SBU. He
took
the amateur radio courses run by the Chelmsford Amateur Radio Society
(CARS) at
Danbury in Essex. Further information on the courses is available from
the CARS
Training Manager
Email: training2016 at g0mwt.org.uk
Web: http://g0mwt.org.uk/training
[ANS thanks AMSAT-UK 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 addi-
tional 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 stu-
dent rate for a maximum of 6 post-secondary years in this status.
Contact Martha at the AMSAT Office for additional student membership
information.
73,
This week's ANS Editor,
Lee McLamb, KU4OS
ku4os at amsat dot org
------------------------------
Message: 12
Date: Sat, 19 Mar 2016 22:13:27 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Two arrow antennas & tripod for sale
Message-ID:
<CACm2je2sy+dL7RztRRvRH9prR6hOgcJgpeB+apO3WnTbvF4JpA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
146/437-10 arrow with duplexer.
146/437 Alaskan arrow ,no duplexer
Almost no use, in
Excellent condition. $100 ea.$7 ship ea.
Also Argus ALL ALUMINUM camera
Tripod.No CHINESE junk. $25.
$10 SHIP .WB8RJY
jeff broughton
------------------------------
Message: 13
Date: Sat, 19 Mar 2016 22:59:05 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Alaskan Arrow sold, thanks all.
Message-ID:
<CACm2je1Bzj7EmVpfLSvsVi6G2p6mzVazvtM2jtPXTGMCOrtT3g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
jeff broughton
------------------------------
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 11, Issue 86
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