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CX2SA > SATDIG 14.02.18 20:04l 990 Lines 32320 Bytes #999 (0) @ WW
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Sent: 180214/1800Z @:CX2SA.SAL.URY.SOAM #:35366 [Salto] FBB7.00e $:AMSATBB1369
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: FoxTelem on a Mac (Peter Green)
2. Upcoming ARISS contact with Los Angeles Academy Middle
School, Los Angeles, CA (n4csitwo@?????????.????
3. Re: FoxTelem on a Mac (JoAnne Maenpaa)
4. K4T EL84 trip planned July 6-8 (Matthew Stevens)
5. Re: Smartphone (compass) apps which show true north? (John Brier)
6. Re: Controller for SAT Antennas (Bob Freeman)
7. Re: Controller for SAT Antennas (Norm n3ykf)
8. Upcoming ARISS Contact Schedule as of 2018-02-14 05:30 UTC
(aj9n@???.????
9. DJ-G7T and full-duplex satellite operating - the 2018 sequel
(Patrick STODDARD (WD9EWK/VA7EWK))
10. FengMaNiu 1 (FMN 1) identified cross link? (christy hunter)
11. Re: FengMaNiu 1 (FMN 1) identified cross link? (Paul Stoetzer)
----------------------------------------------------------------------
Message: 1
Date: Tue, 13 Feb 2018 21:35:41 +0000
From: Peter Green <peteragreen@??.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] FoxTelem on a Mac
Message-ID: <CF6C2C14-64CB-491D-AEE6-0224BCCBF880@??.???>
Content-Type: text/plain; charset=us-ascii
My very grateful thanks to Burns Fisher for the offer of help, generously
giving his time and knowledge, up and running now, just need to perfect the
audio.
I am greatly encouraged by the great sense of community within the AMSAT
world.
73 Pete G0ABI
> On 12 Feb 2018, at 10:19, Peter Green <peteragreen@??.???> wrote:
>
> I am trying to run FoxTelem on a Mac without success currently. I would
very much like to contribute to the telemetry warehouse.
>
> Using an Icom 910 with iMac running Sierra.
>
> Is there anyone on the list that is achieving this successfully who could
give me a few pointers, perhaps of list would be best?
>
> Many thanks
> Pete G0ABI
------------------------------
Message: 2
Date: Tue, 13 Feb 2018 16:59:15 -0500
From: <n4csitwo@?????????.???>
To: <amsat-bb@?????.???>, "amsat-edu" <amsat-edu@?????.???>,
<ariss-press@?????.???>
Subject: [amsat-bb] Upcoming ARISS contact with Los Angeles Academy
Middle School, Los Angeles, CA
Message-ID: <E4AF6C2D32F341A8B7B9D74FCB9A14B0@???>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Los Angeles Academy Middle School, Los Angeles, CA on 15
Feb. The event is scheduled to begin at approximately 17:45 UTC. The
duration of the contact is approximately 9 minutes and 30 seconds. The
contact will be direct between NA1SS and W6RVD. The contact should be
audible over portions of the state of California and adjacent areas.
Interested parties are invited to listen in on the 145.80 MHz downlink. The
contact is expected to be conducted in English.
We at Los Angeles Academy Middle School are pleased and very grateful to
have this wonderful opportunity to speak live with an astronaut onboard the
International Space Station. To tell the truth, we are not only pleased but
quite ecstatic!
Our school serves low-income students in the Central Los Angeles area. The
ethnic makeup of our school is approximately 90% Latino, 9%
African-American, and 1% other. Many of our students originally spoke
Spanish as a first language, and we currently have about 350 English
Language Learners. Over 90% of our students are from economically
disadvantaged families. We currently have about 1250 students in attendance.
The children who will be asking the questions are represented by a widely
inclusive cross-section of our student population, and they are anxious to
participate and become a part of this deeply rich community of caring
individuals from the fields of science and technology. We hope, that
together with you, we might just change a few lives through this experience!
We have been working on this project for over a year, and it has truly
become a team effort involving students, parents, teachers, administrators,
and community members. And it is certainly a labor of love! We have a school
amateur radio club, W6RVD, which has talked to people as far away as Mexico,
Japan, and South America. The Hughes Amateur Radio Club, CSULA, ARISS, and
the California Science Center have all been working with us. Many of these
folks attended our Community Law Day to share the project. The event, as
well, was attended by our local congresswoman. Our radio club members,
additionally, have taken a field trip to JPL in Pasadena.
Again, thank you for your diligence and your efforts to touch young lives!
Participants will ask as many of the following questions as time allows:
1. How does Los Angeles look from the International Space Station?
2. What is it like inside the Soyuz Spacecraft?
3. When you fly over your own town or city, do you recognize it? Does it make
you feel a little homesick?
[IN SPANISH: Cuando vuelas sobre tu pueblo o ciudad, la puedes reconocer?
Extra?as tu hogar?]
4. Do you ever just look out the window, feeling amazed? If you can see out
the window right now, what do you see?
5. When plants grow in space, how are they affected by weightlessness?
6. My Birthday is coming up in a few days. How do you celebrate birthdays on
the International Space Station?
7. The youngest person in space was 25 years old. I am 13 years old. Could
someone like me ever go into space?
8. Do you ever listen to AM or FM broadcast stations from Earth in space? If
so, how do they sound?
9. Can humans really live on Mars? If so, what is necessary for them to do
so?
10. Do you think you?ll miss being in space when you come back to Earth?
11. When you look down on Earth, how do you feel? Are you optimistic for
humanity?
12. What was your favorite subject in school and did that help you to become
an astronaut?
13. Do you or any other astronauts ever sing or play a musical instrument in
the ISS? Do you ever sing together?
14. Can you talk to your family at home from the ISS? How do you do it?
[IN SPANISH: Puedes hablar con tu familia desde el ISS? Come lo haces?]
15. Where do you go if you want to be alone? Is there a place you can go?
16. If you couldn?t be an astronaut, what else would you like to do?
17. How has being in space changed who you are?
18. Can you take a picture of you talking to us? Is this possible?
19. What do you do to keep your life spiritually centered?
20. What celestial bodies are you studying and how?
21. Have you seen the new Star Wars movie? If you did, what did you think of
it?
22. What experiment in the International Space Station most interests you?
PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES:
Visit ARISS on Facebook. We can be found at Amateur Radio on the
International Space Station (ARISS).
To receive our Twitter updates, follow @????????????
Next planned event(s):
1. University of the Philippines Integrated School, Quezon City,
Philippines, direct via DX1ISS
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact is a go for: Sat 2018-02-17 10:23:00 UTC
2. "Galaxy - Children and Youth Center for Space Education", Kaluga,
Russia, direct via TBD
The ISS callsign is presently scheduled to be RS?ISS
The scheduled astronaut is Alexander Misurkin
Contact is a go for 2018-02-18 10:45 UTC
3. Agrupamento de Escolas do Fund?o, Fund?o, Portugal, direct via CS5DBB
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Scott Tingle KG5NZA
Contact is a go for: Wed 2018-02-21 09:38:11 UTC
4. Museum of Science & Technology - Danforth Middle School, Syracuse, NY,
direct via K2MST
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact is a go for: Fri 2018-02-23 14:08:52 UTC
About ARISS:
Amateur Radio on the International Space Station (ARISS) is a cooperative
venture of international amateur radio societies and the space agencies that
support the International Space Station (ISS). In the United States,
sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American
Radio Relay League (ARRL), the Center for the Advancement of Science in
Space (CASIS) and National Aeronautics and Space Administration (NASA).
The primary goal of ARISS is to promote exploration of science, technology,
engineering, and mathematics (STEM) topics by organizing scheduled contacts
via amateur radio between crew members aboard the ISS and students in
classrooms or informal education venues. With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in a
variety of public forums. Before and during these radio contacts, students,
teachers, parents, and communities learn about space, space technologies,
and amateur radio. For more informa
tion, see www.ariss.org, www.amsat.org, and www.arrl.org.
Thank you & 73,
David - AA4KN
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
------------------------------
Message: 3
Date: Tue, 13 Feb 2018 16:17:50 -0600
From: "JoAnne Maenpaa" <k9jkm@???????.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FoxTelem on a Mac
Message-ID: <002901d3a518$7cb06710$76113530$@???>
Content-Type: text/plain; charset="us-ascii"
> I am greatly encouraged by the great sense of community within the AMSAT
> world.
This is the best ham club I've ever belonged to :-)
--
73 de JoAnne K9JKM
k9jkm@?????.???
------------------------------
Message: 4
Date: Tue, 13 Feb 2018 18:50:39 -0500
From: Matthew Stevens <matthew@?????????.???>
To: amsat-bb <amsat-bb@?????.???>
Subject: [amsat-bb] K4T EL84 trip planned July 6-8
Message-ID:
<CAN8zKtQcJBZW70-dLGpw_HrDX41zG+smD2GRU3o4p4yb+9MwjA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Now that we've got our plans finalized, I figured it would be good to
get this one on everybody's radar a few months ahead of time.
This coming July (6-8) myself, Robert KE4AL, and Rich, N4ESS will be
staging a multi day trip (using the callsign K4T) to the last
remaining Florida grid we've never activated: EL84. This trip has been
about 2 years in the making, and we hope to make it a good one.
Primary focus for myself will be 6m, with an emphasis on the digital
modes as band openings during peak Es season allow. Robert's focus
will be satellites, and Rich will be operating HF (primarily CW) for
the International Grid Chase. We will be arriving on Garden key
mid-morning on the 6th, and leaving about the same time on the 8th.
This will give us 2 full days (and nights) to operate as much as
possible.
Robert and I can both easily work horizon to horizon on FM and linear
sats, and will have 2 full sat stations along. Between the two of us,
it should be possible to cover a large number (if not most) of the
passes that will occur while on the island. We want to give everybody
within range the opportunity to work EL84! QSLs will be via LOTW, with
paper cards upon request.
We are working on a couple of options to allow communications via
twitter, email, and text message while on the island for sked
purposes. This should be a great help for 6m, and could possibly allow
for some tight satellite skeds into EU and South America.
Over the next few months, we'll be working on ironing out all possible
kinks in our stations, and do our best to make this trip a success for
everyone needing the grid! Pass schedules and plans will be updated
here, on twitter, and submitted to the AMSAT Upcoming Ops page as we
approach time for the trip.
In the meantime, you can follow our team on twitter at
https://twitter.com/k4t_el84. We'll post updated plans and info there.
Be sure and follow us, as that will be one of our primary channels for
communications while on the island!
73,
- Matthew nj4y
------------------------------
Message: 5
Date: Tue, 13 Feb 2018 22:13:10 -0500
From: John Brier <johnbrier@?????.???>
To: Mike Diehl <diehl.mike.a@?????.???>
Cc: AMSAT BB <AMSAT-BB@?????.???>, Philip Jenkins
<n4hf.philip@?????.???>
Subject: Re: [amsat-bb] Smartphone (compass) apps which show true
north?
Message-ID:
<CALn0fKNfBGPEL7WBcaMbdvyEYJRms57yZGPVh4EpHCFnARTEUA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I say you get a real compass and at least use it to verify the phone.
My android phones have never been that great with cardinal directions.
In fact, today it had north and south completely reversed. Hadn't seen
that in a while, but it happens.
73, John Brier KG4AKV
On Tue, Feb 13, 2018 at 4:22 PM, Mike Diehl <diehl.mike.a@?????.???> wrote:
> First result on a google search for ?android true north? is
https://play.google.com/store/apps/details?id=com.q9tech.tool.compass&hl=en
>
> As far as iOS users go, the stock compass app has a true north option.
>
> 73,
> Mike Diehl
> W8LID
>
>
>> On Feb 13, 2018, at 15:31, KA9QJG <KA9QJG@???????.???> wrote:
>>
>> I use this on My android phone AndroiTS GPS Test
>>
https://play.google.com/store/apps/details?id=com.androits.gps.test.pro&hl=e
>> n
>>
>> I Used the Free ver It worked great on top of my roof setting up my
beam
>> ants
>>
>> 73 De Don KA9QJG
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Philip
>> Jenkins
>> Sent: Tuesday, February 13, 2018 1:55 PM
>> To: AMSAT BB
>> Subject: [amsat-bb] Smartphone (compass) apps which show true north?
>>
>> I'd rather not wade through the process of downloading and installing the
>> various multitudes of compass apps to see which of them can indicate true
>> north (handy for doing satellite demos when you're not at home, and don't
>> know or don't have the magnetic declination of that location).
>>
>> My phone doesn't seem to have a magnetometer anyway (from the error
messages
>> I'm getting when I've tried a few compass apps).
>>
>> Do any of these apps use GPS to show true north, and not just magnetic
north
>> (or both)?
>>
>> Philip N4HF
>>
>> P.S. I have an Android phone and tablet, but I'm sure iPhone users could
>> find this info useful as well.
>> _______________________________________________
>>
>>
>> _______________________________________________
>> 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Tue, 13 Feb 2018 22:22:00 -0500
From: Bob Freeman <uwaveguy@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Controller for SAT Antennas
Message-ID:
<CAHcBMeQMCg9SNJhm8iY9sea7kHM6WTRz_Hk1+CjbNfgMHyDsFw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Here is a link for the Arduino Sketch we have been using for a stepper
system. Good success has been reported by several users:
http://ki4sbl.dodropin.org/CNCTRK/Arduino/RAZEL-duino_2016-05-28.ino
Change the scale factors and max velocity to match your steppers.
See the credits in the notes for the original work by Tom, W9KE.
Any errors on the above link are all my fault!!
Have fun!
Bob
KI4SBL
------------------------------
Message: 7
Date: Tue, 13 Feb 2018 23:28:20 -0500
From: Norm n3ykf <normanlizeth@?????.???>
To: Gerald Witalec <jplanner@?????????.???>
Cc: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Controller for SAT Antennas
Message-ID:
<CAJUhCTMew85CijQNyXQdp3HwgPANes_NFhNW0pvuzX5BdXL-0w@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Anthony Good has code prepared that will do this. Only down side is
that the newer versions only run on a mega.
As others have pointed out, google is your friend, although this is a
good place to start: https://blog.radioartisan.com/
Norm n3ykf
On Mon, Feb 12, 2018 at 6:45 PM, Gerald Witalec <jplanner@?????????.???>
wrote:
> Hi everyone,
> Is anyone using Arduno Uno with stepper motors and HRD to control the
AZ/El antennas for the Sats?
> Jerry...W8RQM
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Wed, 14 Feb 2018 00:23:00 -0500
From: aj9n@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2018-02-14
05:30 UTC
Message-ID: <16192c418c7-c90-e0e2@?????????????.???.???????.???>
Content-Type: text/plain; charset=utf-8
Upcoming ARISS Contact Schedule as of 2018-02-14 05:30 UTC
Quick list of scheduled contacts and events:
?
Vilniaus Jono Basanaviciaus Gymnasium together with Vilniaus Jono
Basanaviciaus Progymnasium, Vilnius, Lithuania, direct via LY1BWB
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Joe Acaba KE5DAR
Contact is a go for: Wed 2018-02-14 12:37:44 UTC 49 deg
?
Los Angeles Academy Middle School, Los Angeles, CA, direct via W6RVD
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Joe Acaba KE5DAR (***)
Contact is a go for: Thu 2018-02-15 17:45:19 UTC 80 deg (***)
University of the Philippines Integrated School, Quezon City, Philippines,
direct via DX1ISS
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact is a go for: Sat 2018-02-17 10:23:00 UTC 70 deg
"Galaxy - Children and Youth Center for Space Education", Kaluga, Russia,
direct via TBD
The ISS callsign is presently scheduled to be RS?ISS
The scheduled astronaut is Alexander Misurkin
Contact is a go for 2018-02-18 10:45 UTC
Agrupamento de Escolas do Fund?o, Fund?o, Portugal, direct via CS5DBB
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Scott Tingle KG5NZA
Contact is a go for: Wed 2018-02-21 09:38:11 UTC 33 deg
Museum of Science & Technology - Danforth Middle School, Syracuse, NY,
direct via K2MST
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Mark Vande Hei KG5GNP
Contact is a go for: Fri 2018-02-23 14:08:52 UTC 28 deg
?
School in Kursk, Russia, direct via TBD (***)
The ISS callsign is presently scheduled to be RS?ISS (***)
The scheduled astronaut is TBD (***)
Contact is a go for Sat 2018-02-24 08:45 UTC (***)
Watch for possible time update (***)
?
******************************************************************************
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?
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@?????????.???
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:?
Francesco IK?WGF with 132
Satoshi 7M3TJZ with 128
Gaston ON4WF with 123
Sergey RV3DR with 100
****************************************************************************
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 8601 date and
time format? YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of?2018-02-14 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
http://www.amsat.org/amsat/ariss/news/arissnews.txt
Total number?of ARISS ISS to earth school events is 1206.
Each school counts as 1?event.
Total number of ARISS ISS to earth school contacts is 1155.
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, 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 2018-02-06 05:00 UTC.
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
Frequency? chart for packet, voice, and crossband repeater modes showing
Doppler? correction? as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Listing?of ARISS related magazine articles as of 2006-07-10 03:30 UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf
Check out the Zoho reports of the ARISS?contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 53 on orbit
Mark Vande Hei KG5GNP
Alexander Misurkin
Joe Acaba KE5DAR
?
Exp. 54 on orbit
Scott Tingle KG5NZA
Norishige Kanai
Alexander Skvortsov
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
?
?
?
?
?
?
?
?
?
?
?
?
------------------------------
Message: 9
Date: Wed, 14 Feb 2018 15:58:19 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@??????.???>
To: AMSAT <amsat-bb@?????.???>
Subject: [amsat-bb] DJ-G7T and full-duplex satellite operating - the
2018 sequel
Message-ID:
<CAN6TEUeApLRKYo6m54QfUY7p-Vj4OUGfFJ0WqWLSKVTvYBTkGg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi!
After dusting off my old Alinco DJ-G7T for use with AO-92's L/V
configuration, I have been using it for AO-92's U/V mode and on
other satellites. I wanted to see how it would do with U/V
satellites in particular, given how it performed with V/U
satellites like AO-27 and AO-51 when I bought the radio in 2009.
I have also seen some recent comments online stating that this
radio is good for satellite work. It can be, but only in certain
situations.
Back in 2009, I was able to make the DJ-G7T work full-duplex with
AO-51, with a post titled "DJ-G7T and full-duplex satellite
operating":
http://amsat.org/pipermail/amsat-bb/2009-May/019177.html
I turned off the extended (non-ham) receive coverage in my DJ-G7T,
and it worked. I remember that, even at the city park I used for
much of my operating then, the radio would be very sensitive to
other signals way outside the 70cm band when working the U/V FM
satellites of that time. I never was able to work SO-50 full-duplex
then, with its weaker downlink compared to AO-51 and AO-27. After
almost 9 years, nothing has changed there. I just tried to work
SO-50 this morning with the DJ-G7T and Elk log periodic, yet I
never even heard the downlink once during a 39-degree pass. The
downlink VFO's S-meter was pegged for most of the pass, probably
from some other RF the radio was receiving. Even using the clock-
shift menu setting didn't improve things. I won't bother using my
DJ-G7T with SO-50 in the future, unless I have another radio for
the downlink.
In the past couple of years, we have had some U/V FM satellites
(AO-85, AO-91, AO-92) that we never had back in 2009. Simply switching
the uplink and downlink bands has been a cure for receiver desense in
other radios like the Icom IC-W32 or Wouxun KG-UV9D when trying to work
full-duplex, but it's not so simple with the DJ-G7T. Depending on the
pass and the antenna I'm using, I can still have receiver desense on
2m while transmitting on 70cm to any of these satellites. When I am
able to overcome the receiver desense on 2m, the DJ-G7T works fine for
the U/V FM satellites. This normally means I am using my Elk, and not
other antennas like the MFJ-1717 long duckie I have used with a few
other HTs. For higher passes, I am able to use the DJ-G7T with the
MFJ-1717 and hear myself while transmitting through AO-91 or AO-92,
but not near AOS or LOS when the receiver desense covers up the
downlink.
If I am only receiving the 2m downlinks from the 3 current Fox-1
satellites, and not trying to transmit to the satellite, the DJ-G7T can
be a good receiver. All of this is dependent on the surrounding RF that
the DJ-G7T might pick up, of course. What works in one location, may
not work the same in another location. I demonstrated this with two
videos I recently posted on YouTube. Here is an AO-91 pass from 6
February:
https://www.youtube.com/watch?v=jSK_v3L_RHk
And an AO-92 pass, earlier on the same day:
https://www.youtube.com/watch?v=E3nfO4tKEAI
I have also posted some audio recordings and pictures of the DJ-G7T used
with these two antennas on AO-91 and AO-92 passes in my Dropbox space.
Go to http://dropbox.wd9ewk.net/ and look for the "DJ-G7T" folder. In
there, I have subfolders for different passes I have worked with this
radio. Some of the U/V passes were worked with the Elk as the antenna,
and some with the MFJ-1717.
As an uplink radio, the DJ-G7T has performed well with the U/V FM
satellites and for AO-92's L-band uplink. I had to increase the mic
gain from 3 to 4 (maximum), and I have only received good reports on
my transmitted audio. My signals may be down a bit on 1.2 GHz if my
tuning isn't keeping up with the Doppler and AO-92's uplink AFC is
having to work, but I have been getting through with this HT (1W on
1.2 GHz) and an old 5-band Yagi mounted on the antenna connector.
I have not tried using this radio for the uplink with SO-50, but I
am confident that using a DJ-G7T with a different radio for the
downlink would also be acceptable for SO-50.
I went back and read through the QST review of this radio from April
2010. The review mentioned trying this radio on AO-27. The reviewer
mentioned hearing slight interference when working full-duplex. That
must have been done from a very RF-quiet location, and on a very high
pass. When I heard any non-ham intermod on 70cm, that would tend to
cover up the downlinks from AO-27 or AO-51.
I have liked my DJ-G7T for non-satellite uses, as it is a neat little
radio which includes 1.2 GHz. This HT, along with the 5-element Yagi I
have had for a long time, has been my uplink setup for AO-92's L/V
configuration over the past couple of weekends. For satellite use, I
think it would be great as an uplink radio for the 3 bands, and might
be useful for full-duplex operation on the U/V satellites, but comes
up way short with the only V/U FM satellite we currently have (SO-50).
I don't have an antenna that would let me see if the DJ-G7T could work
AO-92's L/V configuration full-duplex, but that would be interesting
to see. I won't sell my DJ-G7T, and will continue to recommend the
TH-D72 for anyone looking for an HT currently in production to work
V/U and U/V FM satellites full-duplex. Otherwise, there are many HTs
that can work V/U and U/V FM satellites that have been out of
production, or there is always the option of using two radios.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @?????? or http://twitter.com/WD9EWK
------------------------------
Message: 10
Date: Wed, 14 Feb 2018 09:50:49 -0800
From: christy hunter <cchunter3@??????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] FengMaNiu 1 (FMN 1) identified cross link?
Message-ID: <73c949db-c98a-5db3-7c52-c10d3c0dd0c2@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
during coinciding coverage with AO-92 can FMN-1 downlink Tx cross link
to AO-92 uplink?
?signals can access AO-92 without a tone when it is open.
has anyone heard this?
73
Christy KB6LTY
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Message: 11
Date: Wed, 14 Feb 2018 12:55:18 -0500
From: Paul Stoetzer <n8hm@????.???>
To: christy hunter <cchunter3@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FengMaNiu 1 (FMN 1) identified cross link?
Message-ID:
<CABzOSOp9viJDhyPja1yfCnC8qg9HH4HO4EQNdCFYKi4L-=C0Hg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
It's certainly possible, but the orbits are nearly six hours apart, so
I wouldn't think there's many times that they are in range of each
other, except maybe over the poles.
73,
Paul, N8HM
On Wed, Feb 14, 2018 at 12:50 PM, christy hunter
<cchunter3@??????????.???> wrote:
> during coinciding coverage with AO-92 can FMN-1 downlink Tx cross link to
> AO-92 uplink?
> signals can access AO-92 without a tone when it is open.
> has anyone heard this?
> 73
> Christy KB6LTY
>
>
>
> ---
> This email has been checked for viruses by AVG.
> http://www.avg.com
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Sent via amsat-bb@?????.???.
AMSAT-NA makes this open forum available to all interested persons worldwide
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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!
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End of AMSAT-BB Digest, Vol 13, Issue 69
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