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CX2SA > SATDIG 09.09.19 21:07l 1018 Lines 40970 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: rotor computer interface (Mike Sprenger)
2. Re: BugSat-1 (Tita) and its digipeater (Scott)
3. Re: rotor computer interface (Mike Seguin)
4. How to digipeat? (Hans BX2ABT)
5. Re: rotor computer interface (aj9n@???.????
6. Re: rotor computer interface (Smith Brewster)
7. Re: rotor computer interface (Bob Hammond)
8. Re: How to digipeat? (Scott)
9. ANS-251 AMSAT News Service Weekly Bulletins (Paul Stoetzer)
10. Re: How to digipeat? (bernd1peters@?????.????
----------------------------------------------------------------------
Message: 1
Date: Fri, 6 Sep 2019 19:40:59 -0400
From: Mike Sprenger <mikesprenger@?????.???>
To: Mike Seguin <n1jez@?????????????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] rotor computer interface
Message-ID:
<CAB4zG_KqKgKtRjxyFg8wa9it6p-7YAXPAiuwCmtYzkynWjrLMQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Mike,
I like building the controllers that you can build on an Arduino.
K3NG has provided the software, works great. I am not a software
developer, but I found it quite reasonable to review and adjust the
settings in the source code as appropriate for my station then compile and
load into the Arduino.
Wire it up per this article and works great: (Mine is set to emulate the
Yaesu GS232)
https://blog.radioartisan.com/yaesu-rotator-computer-serial-interface/
https://github.com/k3ng/k3ng_rotator_controller
Works great. ....The next one I build will be to rotate my HF Beam atop
the Yaesu G800.
Thanks,
Mike
W4UOO
On Fri, Sep 6, 2019 at 6:30 PM Mike Seguin via AMSAT-BB <amsat-bb@?????.???>
wrote:
> What are folks using now to control a G5400B rotor system with SatPC32?
>
> I have my trusty SatTracker 688 from WA8SME, but that is no longer
> available.
>
> --
>
> 73,
> Mike, N1JEZ
> "A closed mouth gathers no feet"
> _______________________________________________
> 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
>
--
Thanks,
Mike Sprenger
(37.9167N 81.1244W is the Summit)
------------------------------
Message: 2
Date: Sat, 7 Sep 2019 04:06:56 -0400
From: Scott <scott23192@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] BugSat-1 (Tita) and its digipeater
Message-ID:
<CAJCSnOa2VA3o7T+wSWPfdkt4qgCkeXWX6DABx=mMq_GZiXQO5Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
On the 0719 UTC pass tonight (07-Sept-2019) I cleanly decoded a number of
9k6 packets from BugSat-1, but had no luck getting digipeated with 9k6
packets uplinked on 437.445 transmitted to "CQ via LU7AA".
Could you please provide any additional information about the path required
for the satellite to accept uplink packets? I tried normal APRS-type
messages as well as a plain message with the payload " ?DX? " as indicated
in your previous reply below.
A tweet with several screen shots may be seen at:
https://twitter.com/scott23192/status/1170245596709576709
Thank you very much for any additional information about how the digipeater
can be accessed.
-Scott, K4KDR
===========================
On Fri, Sep 6, 2019 at 2:28 PM Amsat Argentina via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Hello Hans,
>
> Thanks for decoding TITA Tlm.
>
> Tita digi is active at 9K6 AFSK, call=LU7AA, also a ?DX? command should
> give stations heard.
>
> Passes & Frequencies at http://amsat.org.ar/pass?satx=tita Pwr is 2W.
>
> Good Luck !
>
> 73, LU7AA, AMSAT Argentina
> http://amsat.org.ar
>
------------------------------
Message: 3
Date: Sat, 7 Sep 2019 07:49:04 -0400
From: Mike Seguin <n1jez@?????????????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] rotor computer interface
Message-ID:
<715c4ace-c418-825b-dbd0-86cbcc763344@?????????????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Thanks all for the suggestions. I have some research to do. This is for
a friend who's getting in to satellites.
> What are folks using now to control a G5400B rotor system with SatPC32?
>
> I have my trusty SatTracker 688 from WA8SME, but that is no longer
> available.
>
> --
>
> 73,
> Mike, N1JEZ
> "A closed mouth gathers no feet"
------------------------------
Message: 4
Date: Sat, 7 Sep 2019 22:59:12 +0800
From: Hans BX2ABT <hans.bx2abt@???.?????.???>
To: AMSAT <amsat-bb@?????.???>
Subject: [amsat-bb] How to digipeat?
Message-ID: <87bdd7dd-5372-abdc-05b1-f94132a92a94@???.?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Hello all,
Apparently my mail about BugSat-1 raised some interest into that bird's
digipeater. But that still leaves me with the following question (and I
hope I don't sound too obtuse): how do you digipeat? I've tried to
understand it by googling it over the past year or so, but I still don't
get it much. Most tutorials explain about setting it up, but with HTs. I
am running a home station only, with the rig connected to a PC. From
what I understand you need to use the program UISS then.
I got as far as this: I installed UISS (under Wine) and got it connected
to Direwolf. Right now I can work the Falconsat-3 BBS using PacSat
Ground Station and while running that program I see the same messages
that Direwolf displays also appearing in UISS. So far, so good, but then
what? I press either F5, F6, or F7, but nothing happens. Yes, my rig
burps out some data for a split second, but I can't find myself back on
APRS.fi. So what am I doing wrong? Any parameters to adjust? Or are
digipeats not stored for the next iGate to put it on the internet?
Again, I hope I don't sound too witless, but I've never really
understood APRS, apart from terrestrial position reporting and even that
was kind of hard with all the paths and whatnot. Hope you nice people on
this list can drop some pointers. 73 de Hans
P.S. I've got some nasty local interference on 145.825 MHz and that
makes receiving the ISS and other birds almost impossible. I was lucky
to get two frames in from IO-86 the other day, because that was due
south, with the QRM coming from the north-east. Getting a signal up
shouldn't be much of a problem, though.
------------------------------
Message: 5
Date: Sat, 7 Sep 2019 15:54:43 +0000 (UTC)
From: aj9n@???.???
To: n1jez@?????????????????.???? amsat-bb@?????.???
Subject: Re: [amsat-bb] rotor computer interface
Message-ID: <17275969.2508318.1567871683677@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hi Mike,
Here are two more to consider.? One is the LVB Tracker box, but that one
seems to be hard to find if you want one that is already built.? The other
is the LabJack U12 (https://labjack.com/products/u12) or U3
(https://labjack.com/products/u3).? I think many folks do not realize that
these have been around a long time and are pretty foolproof.? For the
LabJacks, you will need to build up an interface card (cost is probably
under $20) to go between the LabJack and the rotor control box.? SatPC32 has
schematics for both (http://www.dk1tb.de/lj_piggyback.JPG
??http://www.dk1tb.de/lj_piggyback_u3.JPG).? The U12 (I have two U12s, but I
don't have the U3) and the LVB both work great with my G5400B and SatPC32 or
with Nova.? I have loaned out my spare U12/piggyback to the ARISS schools
that I mentor if they don't have something; they haven't broken it yet.
Good luck.
73,
Charlie Sufana AJ9NOne of the ARISS mentors
In a message dated 2019-09-06 18:30:14 Eastern Standard Time,
amsat-bb@?????.??? writes:
What are folks using now to control a G5400B rotor system with SatPC32?
I have my trusty SatTracker 688 from WA8SME, but that is no longer available.
--
73,Mike, N1JEZ"A closed mouth gathers no
feet"_______________________________________________Sent via
AMSAT-BB@?????.???. AMSAT-NA makes this open forum availableto all
interested persons worldwide without requiring membership. Opinions
expressedare 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: Sat, 7 Sep 2019 11:34:57 -0400
From: Smith Brewster <brews973@??.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] rotor computer interface
Message-ID: <483BFFC7-83FF-4546-938D-2E519778D5FC@??.???>
Content-Type: text/plain; charset=us-ascii
Sent from my iPad
> On Sep 7, 2019, at 7:49 AM, Mike Seguin via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
> Thanks all for the suggestions. I have some research to do. This is for a
friend who's getting in to satellites.
>
>> What are folks using now to control a G5400B rotor system with SatPC32?
>> I have my trusty SatTracker 688 from WA8SME, but that is no longer
>> available.
>> -- 73,
>> Mike, N1JEZ
>> "A closed mouth gathers no feet"
> _______________________________________________
> 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: Sat, 7 Sep 2019 10:04:01 -0700
From: Bob Hammond <propgrinder@?????.???>
To: n1jez@?????????????????.???? amsat-bb@?????.???
Subject: Re: [amsat-bb] rotor computer interface
Message-ID:
<CAKoB7Oq0yujUaYwmU5soLOf7ajX0a=pk=4-T0YPjfTi5L0Q+uQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I use the FoxDelta ST2 and recommend it. It comes in kit form and was fun
to build.
http://www.foxdelta.com/products/st2-rs232.htm
On Fri, Sep 6, 2019 at 3:31 PM Mike Seguin via AMSAT-BB <amsat-bb@?????.???>
wrote:
> What are folks using now to control a G5400B rotor system with SatPC32?
>
> I have my trusty SatTracker 688 from WA8SME, but that is no longer
> available.
>
> --
>
> 73,
> Mike, N1JEZ
> "A closed mouth gathers no feet"
> _______________________________________________
> 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: Sat, 7 Sep 2019 16:35:34 -0400
From: Scott <scott23192@?????.???>
To: AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] How to digipeat?
Message-ID:
<CAJCSnOY2LNR2yVvsBmYnKJ6eTCRDN58wNhhxt=28za_gm4En=Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Hans!
Like any digital mode, 1200 or 9600 packet requires several things to work
together using the correct settings. This might run a little long, but
I'll be glad to outline them.
But first, one helpful thing to remember is that you want to treat the
uplink & downlink as completely separate affairs. Depending on the
satellite, the uplink and downlink might find you using different bands,
different radios, different antennas, different software... at a MINIMUM
you'll be using different RF frequencies even if it's a simplex packet
digipeater since the doppler compensation will be opposite for up -vs-
down. (caveat - on 2m normal FM you can get by with sitting on one freq)
To me it's always made sense to verify that you're 100% good to go on the
downlink, then set yourself up for the uplink.
So, if anyone wants to read on, here are the things to consider.
RF: you'll need to know what the uplink & downlink RF frequencies are and
if either is in the 70cm band, doppler compensation is mandatory. Here's a
tip: several of the newer sats are using NARROW-FM... even if you're
working on 2 meters, doppler compensation to/from a narrow-band satellite
radio is making a huge difference in my experience. CAT control your radio
if possible; if not, then pre-program 5 memory channels the way most people
have their FM radios setup for voice satellite work.
MOD/DEMOD: your radio needs to have a connection to your computer where
you run software set to decode the type of modulation in use by the
satellite. On Windows, the various UZ7HO Soundmodem versions provide
perhaps the easiest interface to work with. Direwolf is an option on
Windows, too, and by-the-way makes for a very easy to use iGate utility
running off to the side of your screen. On linux, Direwolf is the most
popular option to my knowledge. On either platform, of course we have to
find out from the satellite documentation what settings are required. A
critical note that often prevents success on rates above 1200 baud is that
beyond that speed we need more audio bandwidth than is normally available
for general listening. So, whether you're using a "real" radio or an SDR,
good rules of thumb are 3KHz of audio bandwidth for 1200 baud and 15KHz of
audio bandwidth for the higher rates. On modern radios, that means using a
connection to the radio's "DATA" port for rates above 1200. My TM-V71A,
for example, also has a menu option to switch between 1200 & 9600 - very
important!
USER INTERFACE: as you mentioned, the UISS software is a great tool to use
as the interface when sending/receiving the packet modes. It communicates
with UZ7HO Soundmodem or Direwolf to send/receive data to/from the
satellite. But what to transmit? We need that info from the satellite
documentation. The "TO" is most often "CQ", but read everything you can
find about the satellite in question to be sure. (hint: monitor the
downlink & see what others are using!) The "VIA" can be confusing because
many sats will respond to more than one name. It all comes down to the
documentation - historically the 1200 baud APRS sats will answer to "ARISS"
which is handy... you don't have to change all your settings between
satellites. FalconSat-3 is different; we use "PFS3-1" when transmitting to
FS-3. "If" there actually is an active digipeater on BugSat-1, the team
has instructed us to use "LU7AA" as the call sign to access that satellite.
(I've tried BugSat-1 twice now but at the time of this post, have not had
any success) As for the payload text to transmit, UISS helps a lot (for
APRS sats) by guiding us into sending properly formatted 'TEXT',
'POSITION', and 'MESSAGE' type APRS packets. Monitoring the downlink and
seeing what message types others are having success with is helpful here.
Heck, everything I do on the sats is a copy-cat of the operating techniques
used by the operators that you see post repeatedly here, on Twitter,
QRZ.com, and elsewhere. A huge 'thank-you' to all who share how-to info!
So, aside from individual considerations that are unique to particular
satellites (FS-3 is cross-band full-duplex, for example), that is an
overview. If anyone has read this far, you have my sympathy. I just
wanted to spell out what is common knowledge to most here on the chance
that one item might ring a bell and answer a question for you. If the ISS
or either of the PSAT digipeaters would come back online, that would make
it a lot easier to practice with these modes. As of the date I'm typing
this, all we have active over my location in the U.S. are AISAT-1 (1200
narrow-FM) & FS-3 (9600).
Good luck!
-Scott, K4KDR
===========================
On Sat, Sep 7, 2019 at 11:01 AM Hans BX2ABT via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Hello all,
>
> Apparently my mail about BugSat-1 raised some interest into that bird's
> digipeater. But that still leaves me with the following question (and I
> hope I don't sound too obtuse): how do you digipeat? I've tried to
> understand it by googling it over the past year or so, but I still don't
> get it much. Most tutorials explain about setting it up, but with HTs. I
> am running a home station only, with the rig connected to a PC. From
> what I understand you need to use the program UISS then.
>
> I got as far as this: I installed UISS (under Wine) and got it connected
> to Direwolf. Right now I can work the Falconsat-3 BBS using PacSat
> Ground Station and while running that program I see the same messages
> that Direwolf displays also appearing in UISS. So far, so good, but then
> what? I press either F5, F6, or F7, but nothing happens. Yes, my rig
> burps out some data for a split second, but I can't find myself back on
> APRS.fi. So what am I doing wrong? Any parameters to adjust? Or are
> digipeats not stored for the next iGate to put it on the internet?
>
> Again, I hope I don't sound too witless, but I've never really
> understood APRS, apart from terrestrial position reporting and even that
> was kind of hard with all the paths and whatnot. Hope you nice people on
> this list can drop some pointers. 73 de Hans
>
> P.S. I've got some nasty local interference on 145.825 MHz and that
> makes receiving the ISS and other birds almost impossible. I was lucky
> to get two frames in from IO-86 the other day, because that was due
> south, with the QRM coming from the north-east. Getting a signal up
> shouldn't be much of a problem, though.
>
------------------------------
Message: 9
Date: Sat, 7 Sep 2019 17:00:11 -0700
From: Paul Stoetzer <n8hm@????.???>
To: ans@?????.???? AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] ANS-251 AMSAT News Service Weekly Bulletins
Message-ID:
<CABzOSOp6VriMgWPfrGF1cG=TMVZDJtynY0Cbq+A-c2=U5K-Zqg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
AMSAT NEWS SERVICE
ANS-251
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:
* AMSAT Board of Directors Election Ballots Due September 15
* 2019 AMSAT Space Symposium Preliminary Schedule Now Available
* 2019 AMSAT Symposium Early-Bird Registration Ends September 15
* DM02 Satellite Expedition Sunday, September 22 - N6O/MM
* VUCC Awards & Endorsements for August 2019
* How to Support AMSAT
* Upcoming Satellite Operations
* Satellite Shorts from All Over
SB SAT @ AMSAT $ANS-251.01
ANS-251 AMSAT News Service Weekly Bulletins
AMSAT News Service Bulletin 251.01
>From AMSAT HQ KENSINGTON, MD.
September 8, 2019
To All RADIO AMATEURS
BID: $ANS-251.01
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Don't miss the 50th Anniversary AMSAT Space Symposium
October 18-20 in Arlington, VA.
https://www.amsat.org/amsat-symposium/
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---------------------------------------------------------------------
AMSAT Board of Directors Election Ballots Due September 15
Votes must be received no later than Sunday, September 15, 2019 in
order to be counted in the 2019 AMSAT Board of Directors Election.
AMSAT members should have received ballots by mail. Members who have
not yet received their ballot must contact ElectionBuddy via email to
amsat@?????????????.???
[ANS thanks AMSAT for the above information.]
---------------------------------------------------------------------
2019 AMSAT Space Symposium Preliminary Schedule Now Available
A preliminary schedule of events for the 2019 AMSAT Space Symposium
has been posted to the AMSAT website.
It can be accessed at https://www.amsat.org/symposium-schedule/
[ANS thanks the 2019 AMSAT Symposium Team for the above information.]
---------------------------------------------------------------------
2019 AMSAT Symposium Early-Bird Registration Ends September 15
An early-bird registration rate for the 37th Annual AMSAT Space
Symposium and General Meeting, Friday through Sunday, October 18-20,
2019, in Arlington, Virginia, is available through September 15, 2019
per the following schedule:
Early Registration Through September 15, 2019 ......... $60
Registration September 16, 2019 ? October 11, 2019 .... $65
Registration at the Door .............................. $70
You can complete your registration on-line via the AMSAT Store:
https://www.amsat.org/product-category/amsat-symposium/
This year, all registrants will receive a digital copy of the Proceed-
ings on a thumb drive. Attendees may purchase a hard copy for $25.00.
Non-attendees may put their name on a waiting list for a hard copy, if
there are any left over. The digital version of the Proceedings will
be made available on the online store shortly after the Symposium
concludes.
Student Registration is 50% off and does not include the Proceedings.
[ANS thanks the 2019 AMSAT Symposium Team for the above information.]
---------------------------------------------------------------------
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Symposium Papers Due September 23rd!
Final copies of papers must be submitted by September 23rd for
inclusion in the printed proceedings.
Abstracts and papers should be sent to Dan Schultz
at n8fgv(at)amsat.org
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---------------------------------------------------------------------
DM02 Satellite Expedition Sunday, September 22 - N6O/MM
Alex, N7AGF, and Ron, AD0DX, are planning to activate DM02 on Sunday,
September 22, 2019 on FM and Linear satellites.
It's a 5 or 6 hour boat trip to anchor off San Clemente Island. We
will be on the water for 22 hours and operating around 10 hours
beginning around 3:00 AM PDT (1000Z) on Sunday, September 22
The cost of the boat is $2500 and we would appreciate contributions
to help offset this cost. In the 24 hours after posting to Twitter we
have received around $1300 which Alex and I are very thankful for. The
island has Verizon and AT&T and Alex has a Garmin InReach so we
should be able to tweet passes. The plan is to make as many passes as
possible once we start operating around 3:00 AM PDT. We may skip some
of the low western passes.
We will be using N6O/mm and we have a qrz.com page with all the
details: https://www.qrz.com/db/N6O
If you need the grid please give us a call!
Of course this is dependent on the weather, but the captain says it
has been a good September so far. If you are able to contribute
financially we really appreciate the help to offset some of our
costs. Details to contribute are on the N6O QRZ.com webpage.
[ANS thanks Ron, AD0DX, and Alex, N7AGF, for the above information.]
---------------------------------------------------------------------
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2019 marks AMSAT?s 50th Anniversary
of Keeping Amateur Radio in Space.
To help celebrate, we are sponsoring the
AMSAT 50th Anniversary Awards Program.
Full details are available at
https://www.amsat.org/amsat-50th-anniversary-awards-program/
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---------------------------------------------------------------------
VUCC Awards & Endorsements for August 2019
Here are the endorsements and new VUCC Satellite Awards issued by the
ARRL for the period August 1, 2019 through September 1, 2019. Congrat-
ulations to all those who made the list this month!
CALL 01Aug 01Sep
K8YSE 1884 1926
KO4MA 1673 1694
WA4NVM 1536 1544
N8RO 1068 1070
K8TL 982 1012
N6UK 626 675
N9IP 625 635
KE4AL 556 602
NS3L 505 526
W7QL 401 451
K9UO 425 450
PV8DX 360 373
AC9E 300 352
AD0HJ 282 300
PS8ET 275 274
N7EGY 200 250
W0NBC 106 137
KC9UQR 113 132
AI9IN 100 125
N7AME 100 125
N4QX 100 106
AA0MZ New 102
KI0G New 102
DL4ZAB New 101
KD8RTT New 101
WD9EWK (DM54) New 101
W7BMD New 100
If you find errors or omissions. please contact me off-list at
<mycall>@<??????>.com and I'll revise the announcement. This list was
developed by comparing the ARRL .pdf listings for the two months.
It's a visual comparison so omissions are possible. Apologies if your
call was not mentioned. Thanks to all those who are roving to grids
that are rarely on the birds. They are doing most of the work!
[ANS thanks Ron Parsons, W5RKN, for the above information.]
---------------------------------------------------------------------
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Purchase AMSAT gear on our Zazzle storefront.
25% of the purchase price of each product goes
towards Keeping Amateur Radio in Space
https://www.zazzle.com/amsat_gear
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---------------------------------------------------------------------
How to Support AMSAT
AMSAT relies on the support of our members and the amateur radio
community to Keep Amateur Radio in Space.
How can you help?
* Join AMSAT
Both you and AMSAT will benefit when you join. You get the AMSAT
Journal bimonthly and support from AMSAT Ambassadors. Member dues
and donations provide AMSAT?s primary support.
Join today at
https://www.amsat.org/product-category/amsat-membership/
* Become a Life Member
Becoming a Life Member has never been easier. Now you can become a
Life Member with 12 monthly payments of $74 through our online
store.
See https://www.amsat.org/product/lifetime-membership/ for details.
* Donate to AMSAT
Make a one time or recurring donation to AMSAT today. Even as little
as one dollar a month can make a difference!
Donate today at https://www.amsat.org/donate/
* Purchase AMSAT gear on our Zazzle storefront.
AMSAT receives 25% of the price of each sale on AMSAT logo
merchandise from our Zazzle storefront located at
https://www.zazzle.com/amsat_gear
* Support AMSAT when you make purchases from Amazon! So far, AMSAT
has received $4,194.21 from AmazonSmile. Search for "Radio Amateur
Satellite Corporation"
https://smile.amazon.com/ref=smi_ext_twt_dshb_smi
* Volunteer for AMSAT
AMSAT relies on volunteers for nearly all of our activities. If you
have an idea for how to help, please let us know, Details on
volunteering can be found at
https://www.amsat.org/volunteer-for-amsat/
[ANS thanks the AMSAT office for the above information.]
---------------------------------------------------------------------
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
AMSAT and ARISS are currently supporting a FundRazr campaign
to raise $150,000 for critical radio infrastructure upgrades
on ISS. The upgrades are necessary to enable students to
continue to talk to astronauts in space via Amateur Radio.
We have reached a great milestone with $33,580 raised
or about 17% towards our goal. This would not have been
possible without your outstanding generosity!!
For more information and to DONATE TODAY visit:
https://fundrazr.com/arissnextgen?ref=ab_e7Htwa_ab_47IcJ9
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
---------------------------------------------------------------------
Upcoming Satellite Operations
+Canyon Tour (DM35, DM36, DM37, DM45, DM46) September 7-16, 2019
RJ, WY7AA, will be traveling from WY to Vegas and then off to the
Grand Canyon and Bryce Canyon and back to Vegas. He will certainly be
activating DM35,36,37,45, and 46, and who knows what else he will
throw in on his way there and back. Watch RJ?s Twitter feed for
details. https://twitter.com/WY7AA
+AM1SAT (All Grids in Spain) September 9-15, 2019
AMSAT-EA will be transmitting its special call AM1SAT via all active
satellites from September 9th to September 15th as part of the V
RadioHam Fair IberRadio 2019 activities. IberRadio is the biggest
event for the ham community in Southwest Europe and will open doors
September 14th and 15th . Learn more about IberRadio at
http://www.iberradio.es.
AM1SAT call sign will be active from a minimum of 14 different grids
during that time to help satellite operators to collect as much EA
locators as possible.
As part of this activity and in order to promote the participation,
AMSAT-EA is sponsoring the AM1SAT Special Award in two categories:
SILVER and GOLD
More info available at https://www.amsat-ea.org/
+DN11/DN12 + DN03 - September 17, 2019
Casey, KI7UNJ, is heading to the DN11/DN12 line, September 17th. Look
for him on SO-50, AO-92, and AO-91, between 1657z and 1812z. On the
way back, Casey will make a quick stop in DN03 to catch the 2043z
PO-101 pass. Watch Casey?s Twitter feed for further updates
https://twitter.com/KI7UNJ
+DM02 - September 22, 2019
Ron, AD0DX, and Alex, N7AGF, are chartering a boat to the ultra-rare
DM02 grid square. They will use the special event call sign November 6
Ocean/Maritime Mobile. Expected window of operation is from 1000z to
1900z, Sunday, September 22nd. More information is available on QRZ
https://www.qrz.com/db/N6O to include how you can help support this
monumental operation. Ron and Alex are expected to have cellular
service out there, so keep an eye on their Twitter feeds
https://twitter.com/ad0dx and https://twitter.com/N7AGF
Remember to check out W3ZM On the Road for additional upcoming
activations!
https://www.amsat.org/events/was-w3zm/
[ANS thanks Robert Bankston, KE4AL, 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/
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
--------------------------------------------------------------------
Satellite Shorts from All Over
+AMSAT Argentina reports that the digipeater on BugSat-1 / Tita is
active at 9K6 AFSK, call=LU7AA, also a ?DX? command should give
stations heard.
Passes & Frequencies at http://amsat.org.ar/pass?satx=tita Pwr is 2W.
(Via LU7AA, AMSAT Argentina)
+A Japanese cargo spacecraft loaded with more than four tons of
supplies,spare parts and experiment hardware is scheduled to launch
from theTanegashima Space Center in southern Japan to the Inter-
national Space Station at 5:33 p.m. EDT Tuesday, Sept. 10 (6:33 a.m.
Sept. 11 in Japan). Live coverage of the launch and capture will air
on NASA Television and the agency?s website.
(Via NASA, https://tinyurl.com/ANS-251-NASA)
+Having trouble uploading satellite QSOs to ARRL's Logboook of the
World? See AMSAT's guide at https://tinyurl.com/ANS-251-LoTW
+Looking for information about satellite frequencies or operating
status? The AMSAT website has you covered!
https://www.amsat.org/two-way-satellites/
+It's going to be an exciting fall for Amateur Radio in Space! The
50th Anniversary Space Symposium will take place in October and the
launches of both RadFxSat-2 / Fox-1E and HuskySat-1 carrying an AMSAT
V/u transponder are expected to occur.
---------------------------------------------------------------------
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,
Paul Stoetzer, N8HM
n8hm at amsat dot org
------------------------------
Message: 10
Date: Sat, 7 Sep 2019 22:07:25 -0700
From: <bernd1peters@?????.???>
To: "'Scott'" <scott23192@?????.???>, <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] How to digipeat?
Message-ID: <116e01d56603$4e57ce50$eb076af0$@?????.???>
Content-Type: text/plain; charset="us-ascii"
Hi Scott,
On behalf of all Newbies, thank you for your reply. Thank you for spending a
significant amount of time to detail what is essential information to help
fellow Hams.
73,
Bernd - KB7AK
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Scott via AMSAT-BB
Sent: Saturday, September 7, 2019 1:36 PM
To: AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] How to digipeat?
Hi Hans!
Like any digital mode, 1200 or 9600 packet requires several things to work
together using the correct settings. This might run a little long, but I'll
be glad to outline them.
But first, one helpful thing to remember is that you want to treat the
uplink & downlink as completely separate affairs. Depending on the
satellite, the uplink and downlink might find you using different bands,
different radios, different antennas, different software... at a MINIMUM
you'll be using different RF frequencies even if it's a simplex packet
digipeater since the doppler compensation will be opposite for up -vs- down.
(caveat - on 2m normal FM you can get by with sitting on one freq) To me
it's always made sense to verify that you're 100% good to go on the
downlink, then set yourself up for the uplink.
So, if anyone wants to read on, here are the things to consider.
RF: you'll need to know what the uplink & downlink RF frequencies are and
if either is in the 70cm band, doppler compensation is mandatory. Here's a
tip: several of the newer sats are using NARROW-FM... even if you're working
on 2 meters, doppler compensation to/from a narrow-band satellite radio is
making a huge difference in my experience. CAT control your radio if
possible; if not, then pre-program 5 memory channels the way most people
have their FM radios setup for voice satellite work.
MOD/DEMOD: your radio needs to have a connection to your computer where you
run software set to decode the type of modulation in use by the satellite.
On Windows, the various UZ7HO Soundmodem versions provide perhaps the
easiest interface to work with. Direwolf is an option on Windows, too, and
by-the-way makes for a very easy to use iGate utility running off to the
side of your screen. On linux, Direwolf is the most popular option to my
knowledge. On either platform, of course we have to find out from the
satellite documentation what settings are required. A critical note that
often prevents success on rates above 1200 baud is that beyond that speed we
need more audio bandwidth than is normally available for general listening.
So, whether you're using a "real" radio or an SDR, good rules of thumb are
3KHz of audio bandwidth for 1200 baud and 15KHz of audio bandwidth for the
higher rates. On modern radios, that means using a connection to the
radio's "DATA" port for rates above 1200. My TM-V71A, for example, also has
a menu option to switch between 1200 & 9600 - very important!
USER INTERFACE: as you mentioned, the UISS software is a great tool to use
as the interface when sending/receiving the packet modes. It communicates
with UZ7HO Soundmodem or Direwolf to send/receive data to/from the
satellite. But what to transmit? We need that info from the satellite
documentation. The "TO" is most often "CQ", but read everything you can
find about the satellite in question to be sure. (hint: monitor the downlink
& see what others are using!) The "VIA" can be confusing because many sats
will respond to more than one name. It all comes down to the documentation
- historically the 1200 baud APRS sats will answer to "ARISS"
which is handy... you don't have to change all your settings between
satellites. FalconSat-3 is different; we use "PFS3-1" when transmitting to
FS-3. "If" there actually is an active digipeater on BugSat-1, the team has
instructed us to use "LU7AA" as the call sign to access that satellite.
(I've tried BugSat-1 twice now but at the time of this post, have not had
any success) As for the payload text to transmit, UISS helps a lot (for
APRS sats) by guiding us into sending properly formatted 'TEXT', 'POSITION',
and 'MESSAGE' type APRS packets. Monitoring the downlink and seeing what
message types others are having success with is helpful here.
Heck, everything I do on the sats is a copy-cat of the operating techniques
used by the operators that you see post repeatedly here, on Twitter,
QRZ.com, and elsewhere. A huge 'thank-you' to all who share how-to info!
So, aside from individual considerations that are unique to particular
satellites (FS-3 is cross-band full-duplex, for example), that is an
overview. If anyone has read this far, you have my sympathy. I just wanted
to spell out what is common knowledge to most here on the chance that one
item might ring a bell and answer a question for you. If the ISS or either
of the PSAT digipeaters would come back online, that would make it a lot
easier to practice with these modes. As of the date I'm typing this, all we
have active over my location in the U.S. are AISAT-1 (1200
narrow-FM) & FS-3 (9600).
Good luck!
-Scott, K4KDR
===========================
On Sat, Sep 7, 2019 at 11:01 AM Hans BX2ABT via AMSAT-BB
<amsat-bb@?????.???>
wrote:
> Hello all,
>
> Apparently my mail about BugSat-1 raised some interest into that
> bird's digipeater. But that still leaves me with the following
> question (and I hope I don't sound too obtuse): how do you digipeat?
> I've tried to understand it by googling it over the past year or so,
> but I still don't get it much. Most tutorials explain about setting it
> up, but with HTs. I am running a home station only, with the rig
> connected to a PC. From what I understand you need to use the program UISS
then.
>
> I got as far as this: I installed UISS (under Wine) and got it
> connected to Direwolf. Right now I can work the Falconsat-3 BBS using
> PacSat Ground Station and while running that program I see the same
> messages that Direwolf displays also appearing in UISS. So far, so
> good, but then what? I press either F5, F6, or F7, but nothing
> happens. Yes, my rig burps out some data for a split second, but I
> can't find myself back on APRS.fi. So what am I doing wrong? Any
> parameters to adjust? Or are digipeats not stored for the next iGate to
put it on the internet?
>
> Again, I hope I don't sound too witless, but I've never really
> understood APRS, apart from terrestrial position reporting and even
> that was kind of hard with all the paths and whatnot. Hope you nice
> people on this list can drop some pointers. 73 de Hans
>
> P.S. I've got some nasty local interference on 145.825 MHz and that
> makes receiving the ISS and other birds almost impossible. I was lucky
> to get two frames in from IO-86 the other day, because that was due
> south, with the QRM coming from the north-east. Getting a signal up
> shouldn't be much of a problem, though.
>
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------------------------------
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 342
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