| |
CX2SA > SATDIG 30.10.19 03:22l 983 Lines 30438 Bytes #999 (0) @ WW
BID : AMSATBB14390
Read: GUEST
Subj: AMSAT-BB-digest V14 390
Path: IW8PGT<I3XTY<I0OJJ<I0OJJ<EA2RCF<CX2SA
Sent: 191030/0108Z @:CX2SA.SAL.URY.SOAM #:16959 [Salto] FBB7.00e $:AMSATBB14390
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Grid Line Question (Brad Smith)
2. Secondary mission ideas (Andrew Glasbrenner)
3. Re: Secondary mission ideas (Scott)
4. Re: Secondary mission ideas (Robert Bruninga)
5. Upcoming ARISS Contact Schedule as of 2019-10-29 19:30 UTC
(aj9n@???.????
6. Re: Secondary mission ideas (KC9SGV)
7. Re: Secondary mission ideas (Ev Tupis)
8. Re: Secondary mission ideas (Leffke, Zachary)
9. Re: Secondary mission ideas (P. Suryono Adisoemarta)
----------------------------------------------------------------------
Message: 1
Date: Mon, 28 Oct 2019 21:09:20 +0000 (UTC)
From: Brad Smith <corlissbs@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Grid Line Question
Message-ID: <668041482.1457088.1572296960528@????.?????.???>
Content-Type: text/plain; charset=UTF-8
<Per ARRL VHF/UHF Century Club Award Rules, paragraphs 4(e) and 4(f)
stations who claim to operate from more than one grid locator simultaneously
need to be exactly on the line or grid corner and document with a picture
showing your equipment and a GPS displaying your location exactly on the
line or corner and a GPS error no more than 20 feet.?>
I use a Garmin Oregon 750T handheld GPS when roving. I am also a geocacher
and this GPS works very well for both activities. Check a grid line map on
the Internet and use your pointer to get the coordinates. Plug them into
your GPS and rove. Same for a four corner point. Other hikers handheld GPS
units will work, I am sure, but I am familiar with this one. The touch
screen is really helpful.
Brad KC9UQR
------------------------------
Message: 2
Date: Tue, 29 Oct 2019 14:00:37 -0400
From: "Andrew Glasbrenner" <glasbrenner@??????????.???>
To: <amsat-bb@?????.???>
Subject: [amsat-bb] Secondary mission ideas
Message-ID: <02a101d58e82$c4f1a0c0$4ed4e240$@??????????.???>
Content-Type: text/plain; charset="us-ascii"
I just had a super call with a university program flying a mission using
SDRs. We talked about licensing and coordination issues, and discussed ideas
for a secondary two-way mission that they want to do.
What would you like to see, repeater, transponder, BBS, digital voice,
digipeater? Downlink would be on 2m, and would probably be limited to
20-25khz wide. Other ideas? Something new and different? Let's have a
civilized discussion about what they could try, as they seem to be an eager
and capable bunch.
73, Drew KO4MA
------------------------------
Message: 3
Date: Tue, 29 Oct 2019 14:13:44 -0400
From: "Scott" <scott23192@?????.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <62A4F9FB3F8E406CB6A47EB5EB486A3F@???????>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Thanks for the info!
It might be helpful to know a few things:
-what is the expected duration of the mission?
(extreme short-term might make SSTV or FM/voice more attractive)
-what is the expected orbit?
(satellites that are only in-range of a small number of operators should
carry whatever is most useful to that group)
-is more than one capability possible?
(we're seeing some recent satellites with the capability of multiple
downlinks or the ability to switch between various modes)
Thanks!
-Scott, K4KDR
=========================================
-----Original Message-----
From: Andrew Glasbrenner via AMSAT-BB
Sent: Tuesday, October 29, 2019 2:00 PM
To: amsat-bb@?????.???
Subject: [amsat-bb] Secondary mission ideas
I just had a super call with a university program flying a mission using
SDRs. We talked about licensing and coordination issues, and discussed ideas
for a secondary two-way mission that they want to do.
What would you like to see, repeater, transponder, BBS, digital voice,
digipeater? Downlink would be on 2m, and would probably be limited to
20-25khz wide. Other ideas? Something new and different? Let's have a
civilized discussion about what they could try, as they seem to be an eager
and capable bunch.
73, Drew KO4MA
------------------------------
Message: 4
Date: Tue, 29 Oct 2019 14:14:57 -0400
From: Robert Bruninga <bruninga@????.???>
To: Andrew Glasbrenner <glasbrenner@??????????.???>
Cc: amsat bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <8500086978216403549c7ee200349238@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Voice mode but with embedded CALL and GRID data, so we can see who is
calling where., and maybe a few bits for Station type. (handheld,
portable, mobile, Oscar,etc)... Bob, WB4APR
-----------------Original Message------------------
From: Andrew Glasbrenner via AMSAT-BB
Sent: Tuesday, October 29, 2019 2:01 PM
Subject: [amsat-bb] Secondary mission ideas
I just had a super call with a university program flying a mission using
SDRs. We talked about licensing and coordination issues, and discussed
ideas for a secondary two-way mission that they want to do.
What would you like to see, repeater, transponder, BBS, digital voice,
digipeater? Downlink would be on 2m, and would probably be limited to
20-25khz wide. Other ideas? Something new and different? Let's have a
civilized discussion about what they could try, as they seem to be an
eager and capable bunch.
73, Drew KO4MA
------------------------------
Message: 5
Date: Tue, 29 Oct 2019 19:29:00 +0000 (UTC)
From: aj9n@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2019-10-29
19:30 UTC
Message-ID: <800685276.1804594.1572377340837@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Upcoming ARISS Contact Schedule as of 2019-10-29 19:30 UTC
?
Quick list of scheduled contacts and events:
?
Farmwell Station Middle School Space Dreamers, Ashburn, VA, direct via K4LRG
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Drew Morgan KI5AAA
Contact was successful: Tue 2019-10-29 15:01:27 UTC 44 deg (***)
?
Starting at about 14:15 UTC, watch for live stream at:
https://live.myvrspot.com/player?udi=bG91ZG91bg==&c=ZmFybWlzcw==
?
?
Private UKEB School, Izmir, Turkey, telebridge via K6DUE
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Luca Parmitano KF5KDP
Contact is go for: Tue 2019-11-05 12:34:49 UTC 67 deg
?
Istituto Comprensivo ?G.B. Perasso?, Milano, Italy and Istituto Comprensivo
Montignoso ? Scuola secondaria I grado ?G.B.Giorgini?, Montignoso, Italy,
telebridge via VK5ZAI
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Luca Parmitano KF5KDP
Contact is go for: Wed 2019-11-06 09:27:34 UTC 32 deg
?
?
?
?
The ARISS webpage is at https://www.ariss.org/ ???
Note that there are links to other ARISS websites from this site.
?
The main page for Applying to Host a Scheduled Contact may be found at
https://www.ariss.org/apply-to-host-an-ariss-contact.html ???
ARISS Contact Applications (United States)
?
?
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 8601 date and
time format YYYY-MM-DD HH:MM:SS
?
The complete schedule page has been updated as of?2019-10-29 19:30 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.
?
https://www.amsat.org/amsat/ariss/news/arissnews.rtf
https://www.amsat.org/amsat/ariss/news/arissnews.txt
?
?
The successful school list has been updated as of 2019-10-29 19:30 UTC. (***)
https://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
?
?
?
The ARISS webpage is at https://www.ariss.org/ ???
Note that there are links to other ARISS websites from this site.
?
The main page for Applying to Host a Scheduled Contact may be found at
https://www.ariss.org/apply-to-host-an-ariss-contact.html ???
?
ARISS Contact Applications (United States)
?
The ARISS webpage is at https://www.ariss.org/ ???
Note that there are links to other ARISS websites from this site.
?
?
ARISS Contact Applications (United States)
?
Message to US Educators?
Amateur Radio on the International Space Station?
Contact Opportunity?
?
Call for Proposals?
New Proposal Window is October 1, 2019 to November 30, 2019?
?
The Amateur Radio on the International Space Station (ARISS) Program is
seeking formal and informal education institutions and organizations,
individually or working together, to host an Amateur Radio contact with a
crew member on board the ISS.? ARISS anticipates that the contact would be
held between July 1, 2020 and December 31, 2020. Crew scheduling and ISS
orbits will determine the exact contact dates. To maximize these radio
contact opportunities, ARISS is looking for organizations that will draw
large numbers of participants and integrate the contact into a
well-developed education plan.?
?
The deadline to submit a proposal is November 30, 2019.? Proposal
information and documents can be found at https://www.ariss.org.?
?
The Opportunity?
?
Crew members aboard the International Space Station will participate in
scheduled Amateur Radio contacts. These radio contacts are approximately 10
minutes in length and allow students to interact with the astronauts through
a question-and-answer session.?
?
An ARISS contact is a voice-only communication opportunity via Amateur Radio
between astronauts and cosmonauts aboard the space station and classrooms
and communities. ARISS contacts afford education audiences the opportunity
to learn firsthand from astronauts what it is like to live and work in space
and to learn about space research conducted on the ISS. Students also will
have an opportunity to learn about satellite communication, wireless
technology, and radio science. Because of the nature of human spaceflight
and the complexity of scheduling activities aboard the ISS, organizations
must demonstrate flexibility to accommodate changes in dates and times of
the radio contact.?
?
Amateur Radio organizations around the world with the support of NASA and
space agencies in Russia, Canada, Japan and Europe present educational
organizations with this opportunity. The ham radio organizations' volunteer
efforts provide the equipment and operational support to enable
communication between crew on the ISS and students around the world using
Amateur Radio.??
?
More Information
?
For proposal information and more details such as expectations, proposal
guidelines and proposal form, and dates and times of Information Webinars,
go to https://www.ariss.org .
?
Please direct any questions to?ariss.us.education@?????.????
?
******************************************************************************
******************************************************************************
****************
ARISS Contact Applications (Europe, Africa and the Middle East)
?
Schools and Youth organizations in Europe, Africa and the Middle East
interested in setting up an ARISS radio contact with an astronaut on board
the International Space Station are invited to submit an application from
September to October and from February to April.
Please refer to details and the application form at
www.ariss-eu.org/school-contacts.? Applications should be addressed by email
to:? school.selection.manager@????????.???
?
ARISS Contact Applications (Canada, Central and South America, Asia and
Australia and Russia)
?
Organizations outside the United States can apply for an ARISS contact by
filling out an application.? Please direct questions to the appropriate
regional representative listed below. If your country is not specifically
listed, send your questions to the nearest ARISS Region listed. If you are
unsure which address to use, please send your question to the ARISS-Canada
representative; they will forward your question to the appropriate
coordinator.
?
For the application, go to:? https://www.ariss.org/ariss-application.html.
ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to:
ve3tbd@?????.???
ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to:
ariss@???????.???? Japan Amateur Radio League (JARL) https://www.jarl.org/
ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/
?
?
******************************************************************************
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@?????.??? or aj9n@???.???.
?
Listen for the ISS on the downlink of 145.8? MHz.
?
******************************************************************************
*
?
All ARISS contacts are made via the Kenwood 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 https://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??
Please note that the HamTV system has been brought back to earth for
troubleshooting.? Please monitor ARISS-EU or ARISS-ON for the very latest
news on the troubleshooting efforts.?
?
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@?????????.???
?
?
The HamTV webpage:? https://www.amsat-on.be/hamtv-summary/
?
?
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:
?
Satoshi 7M3TJZ with 136
Francesco IK?WGF with 135
Sergey RV3DR with 127
Gaston ON4WF with 123
?
****************************************************************************
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.
?
?
?
Total number of ARISS ISS to earth school events is 1355. (***)
Each school counts as 1 event.??????????????????????????????????
Total number of ARISS ISS to earth school contacts is 1294. (***)
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.
https://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:
South Dakota, Wyoming, American?Samoa, Guam, Northern Marianas Islands, and
the Virgin Islands.
?
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
?
QSL information may be found at:
https://www.ariss.org/qsl-cards.html
?
ISS callsigns: DP?ISS, IR?ISS, NA1SS, OR4ISS, RS?ISS
?
****************************************************************************
Frequency chart for packet, voice, and crossband repeater modes showing
Doppler correction? as of 2005-07-29 04:00 UTC
https://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction.
rtf
Check out the Zoho reports of the ARISS contacts
?
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
?
Exp. 59 on orbit
Christina Koch
?
Exp. 60 on orbit
Luca Parmitano KF5KDP
Alexander Skvortsov
Drew Morgan KI5AAA
?
Exp. 61 on orbit
Oleg Skripochka
Jessica Meir
?
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
?
------------------------------
Message: 6
Date: Tue, 29 Oct 2019 14:08:11 -0500
From: KC9SGV <kc9sgv@?????.???>
To: Robert Bruninga <bruninga@????.???>
Cc: amsat bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <9FEDE522-0EF5-4131-A240-F82E36FF618B@?????.???>
Content-Type: text/plain; charset=us-ascii
Something new then.
Voice mode sounds good.
But allow VARA SAT OFDM up and down into a Winlink RMS.
VARA SAT is slowed down with increased latency, to enable the sat delay ARQ.
They have this on QO-100 already.
Should be a challenge with Doppler.
Bernard,
KC9SGV.
Sent from my iPad
> On Oct 29, 2019, at 1:14 PM, Robert Bruninga via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> Voice mode but with embedded CALL and GRID data, so we can see who is
> calling where., and maybe a few bits for Station type. (handheld,
> portable, mobile, Oscar,etc)... Bob, WB4APR
>
> -----------------Original Message------------------
> From: Andrew Glasbrenner via AMSAT-BB
> Sent: Tuesday, October 29, 2019 2:01 PM
> Subject: [amsat-bb] Secondary mission ideas
>
> I just had a super call with a university program flying a mission using
> SDRs. We talked about licensing and coordination issues, and discussed
> ideas for a secondary two-way mission that they want to do.
>
> What would you like to see, repeater, transponder, BBS, digital voice,
> digipeater? Downlink would be on 2m, and would probably be limited to
> 20-25khz wide. Other ideas? Something new and different? Let's have a
> civilized discussion about what they could try, as they seem to be an
> eager and capable bunch.
>
> 73, Drew KO4MA
> _______________________________________________
> 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: Tue, 29 Oct 2019 22:13:18 +0000 (UTC)
From: Ev Tupis <w2ev@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <553468602.1896402.1572387198797@????.?????.???>
Content-Type: text/plain; charset=UTF-8
How interesting!
In very general terms: QSO Robot
Ground stations TX to the satellite using CW or PSK31 (so multiple uplink
signals can spread out through a 3 kHz uplink passband.
The satellite responds back on a single frequency.
This happens all the time on HF where DX stations listen from 14.300 to
14.310 while responding on a single frequency like 14.290.
Concept presented. Details can be worked out later.
By the way...the now concluded PropNET Project used this concept for a
decade...quite successfully.
Cheers,Ev, W2EV
On Tuesday, October 29, 2019, 2:04:08 PM EDT, Andrew Glasbrenner via
AMSAT-BB <amsat-bb@?????.???> wrote:
I just had a super call with a university program flying a mission using
SDRs. We talked about licensing and coordination issues, and discussed ideas
for a secondary two-way mission that they want to do.
What would you like to see, repeater, transponder, BBS, digital voice,
digipeater? Downlink would be on 2m, and would probably be limited to
20-25khz wide. Other ideas? Something new and different? Let's have a
civilized discussion about what they could try, as they seem to be an eager
and capable bunch.
73, Drew KO4MA
_______________________________________________
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: 8
Date: Wed, 30 Oct 2019 00:14:22 +0000
From: "Leffke, Zachary" <zleffke@??.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID:
<BN8PR05MB606814C2768BCDC6DD8903D1DF600@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="us-ascii"
Idea 1: Crosslinks
Something (anything) with crosslinks...... Big goal would be to go for DX
records via intentional crosslinks for voice/packet/telemetry/(maybe even
telecommand) relay.
If there is a tunable uplink frontend, (and its allowed from a regulatory
perspective, so maybe fixed downlink freq, tunable uplink freq)....You
mentioned 2m down, so my guess is UHF up? Idea would be to relay
voice/packet/maybe TLM from birds with a UHF downlink....Maybe go as far as
regenerative transponder instead of bent pipe....easy enough for FM on a
'single frequency' (in quotes because Doppler...) could be trickier if
single sideband relay and there are multiple signals in the passband. So
maybe regenerative for FM relay and/or packet relay, bent pipe for sideband
relay.
......and if its tunable, it could be changed around 'seasonally' as orbits
change and the chances of a relay increase or decrease for a particular
bird. Another fun application could be helping 'hurt' birds.....maybe
something up there is still transmitting, but the finals on the PA are
blown......if you could get a receiver close in.....maybe it could hear it
and relay the data.......
Same idea for birds with hurting RX if they could tune their 2m downlink
around (but that's probably a tougher sell from a regulatory point of view).
Imagine if they could TX at UHF (I know they can't, just an analogy
here...). Tune to 435.300 MHz......get in 'close' to Fox-1C, and relay a
couple of command station commands via a bent pipe transponder.. might be an
interesting experiment and stimulate some kind of response from Fox-1C (Just
an example, I know the up/down freqs are inverted for 1C, but it gets the
idea across)......basically: Drew's house------(UHF up)----->(UHF RX) Their
bird, bent pipe (VHF TX)---> (VHF RX) Hurt Bird.
When 1E launches (VHF Up, UHF Down).....could make for some fancy
fun.........relay the 1200 bps tlm via their bird......or make voice
contacts back and forth between the pair of bent pipe transponders.....or
maybe do both at the same time.........Depending on orbits and such, this
could make tuning for Doppler fun with multiple hops and different bands in
the mix.......sometimes you might have to tune UP on the downlink.
Idea 2: How 'utilized' are the Amateur Satellite Service bands?
Different idea could be spectrum mapping.......depending on the type of SDR,
if they can receive the full 3 MHz of 435-438 MHz band....do some
FFT/averaging magic, store off FFT 'snapshots', and then later downlink the
snapshots. Idea would be to develop a 'heatmap' of the use of the 435-438
MHz band. Doesn't have to be hyper-precise geolocation or anything that
crazy to still to be useful......as long as they manage a reasonably
accurate timestamp for when the FFT was taken (preferably in UTC, or at
least something that can be mapped to UTC) they could figure out where the
bird was from TLEs later. If they happen to be flying a GPS, even better.
Global heatmap of the 435-438 MHz band might be good info for groups like
IARU for coordination purposes.
Idea 3: Simple software defined transponder
Do thing like the SDX from ARISSat-1 days. Basically a 'plain old' bent
pipe transponder, but with things like power normalization from uplink to
downlink so everyone gets an equal share of downlink power (LEILA). If a
'violator' exceeds uplink limits for too long, send them some CW on their
equivalent downlink freq telling them to turn down the juice. Another one I
would love is FM up, SSB down.......would let me use my TH-F6A for QSOs (or
any other HT that can TX FM, and receive all-mode). Another mode under this
category could be a basic APRS digipeater. The novelty is not doing the
basic things individually, it would be being able to change modes from one
to the next to the next with the same software radio running different
waveforms (one day they're making heatmaps, the next they are an APRS
repeater, the next they are an FM repeater, the next they are an SSB
transponder with power normalization, etc. etc. etc. ).
Good Stuff!
-Zach, KJ4QLP
--
Research Associate
Aerospace & Ocean Systems Lab
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Ev Tupis via AMSAT-BB
Sent: Tuesday, October 29, 2019 6:13 PM
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Secondary mission ideas
How interesting!
In very general terms: QSO Robot
Ground stations TX to the satellite using CW or PSK31 (so multiple uplink
signals can spread out through a 3 kHz uplink passband.
The satellite responds back on a single frequency.
This happens all the time on HF where DX stations listen from 14.300 to
14.310 while responding on a single frequency like 14.290.
Concept presented. Details can be worked out later.
By the way...the now concluded PropNET Project used this concept for a
decade...quite successfully.
Cheers,Ev, W2EV
On Tuesday, October 29, 2019, 2:04:08 PM EDT, Andrew Glasbrenner via
AMSAT-BB <amsat-bb@?????.???> wrote:
I just had a super call with a university program flying a mission using
SDRs. We talked about licensing and coordination issues, and discussed ideas
for a secondary two-way mission that they want to do.
What would you like to see, repeater, transponder, BBS, digital voice,
digipeater? Downlink would be on 2m, and would probably be limited to
20-25khz wide. Other ideas? Something new and different? Let's have a
civilized discussion about what they could try, as they seem to be an eager
and capable bunch.
73, Drew KO4MA
_______________________________________________
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
_______________________________________________
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: 9
Date: Wed, 30 Oct 2019 00:58:35 +0000 (UTC)
From: "P. Suryono Adisoemarta" <yono_adisoemarta@?????.???>
To: amsat-bb@?????.???? Andrew Glasbrenner
<glasbrenner@??????????.???>
Subject: Re: [amsat-bb] Secondary mission ideas
Message-ID: <793356168.1941181.1572397115876@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Thanks for the opportunity to share, as we (AMSAT-ID) had a discussion 2
days ago on ideas for the next amateur payload, as a continuation of the
current IO-86 payload on LAPAN A2/ORARI satellite.
Based on the IO-86 utilization that FM voice repeater has the most
participants (typically 15-20 callsigns can he heard in each pass, that
sometimes make it like "a zoo"), then SSTV (we had several hundred scouts
receiving images on the last JOTA), continued with APRS and CW, we are
thinking of:- Regular (analog) FM repeater, but superimposed with telemetry
data (but not DUV as the DUV audio has shown to be a hindrance on portable
operators using HT that is typical in Indonesia).With this plan the typical
portable operators using HT can still have regular QSO as easy as currently
on IO-86 while users with SDR receiver can extract telemetry information
while various QSO are on going.
Additionally we plan to add a very tight bandpass filter on the front-end,
to minimize effect of out-of-band signals making the radio sometimes deaf,
and RSSI detector to block high-power users.
73 de Yono - YD0NXXAMSAT-ID Technical Team
On Wednesday, October 30, 2019, 01:04:09 AM GMT+7, Andrew Glasbrenner
via AMSAT-BB <amsat-bb@?????.???> wrote:
I just had a super call with a university program flying a mission using
SDRs. We talked about licensing and coordination issues, and discussed ideas
for a secondary two-way mission that they want to do.
What would you like to see, repeater, transponder, BBS, digital voice,
digipeater? Downlink would be on 2m, and would probably be limited to
20-25khz wide. Other ideas? Something new and different? Let's have a
civilized discussion about what they could try, as they seem to be an eager
and capable bunch.
73, Drew KO4MA
_______________________________________________
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
------------------------------
Subject: Digest Footer
_______________________________________________
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 member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 14, Issue 390
*****************************************
Read previous mail | Read next mail
| |
