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CX2SA > SATDIG 21.10.18 17:19l 1012 Lines 39683 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. ANS-294 AMSAT News Service Weekly Bulletins (Frank Karnauskas)
2. Re: 2 meter interference from WiFi hub (Burns Fisher)
3. KR-400 transformer wiring (Hans BX2ABT)
4. Re: KR-400 transformer wiring (Glenn Little WB4UIV)
5. Re: KR-400 transformer wiring (H. Stephen Nipper)
6. Re: AlfaSpid issue (kb2mjeff@???.????
7. Re: 2 meter interference from WiFi hub (Burns Fisher)
----------------------------------------------------------------------
Message: 1
Date: Sat, 20 Oct 2018 22:25:21 -0700
From: "Frank Karnauskas" <n1uw@???????.???>
To: <amsat-bb@?????.???>
Subject: [amsat-bb] ANS-294 AMSAT News Service Weekly Bulletins
Message-ID: <001801d468fe$77563fb0$6602bf10$@???????.???>
Content-Type: text/plain; charset="iso-8859-1"
AMAT NEWS SERVICE
ANS-294
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:
* JY1SAT Pre-launch Integration Video
* Still More Amateur Radio Cubesats Ready for Launch
* ARISS Joins NASA On The Air for a Special SSTV Event October 27-29
* Astronauts Land Safely After Abort
* LUME-1 to Test Wildfire Sensing and New Modulation Techniques
* Final ARISS Proposal Webinar to be held Tuesday, October 23rd
* AMSAT/ARISS Fundrazr Hits $10,000 Mark
* Upcoming Satellite Operations
* ARISS News
* Shorts from All Over
SB SAT @ AMSAT $ANS-294.01
ANS-294 AMSAT News Service Weekly Bulletins
AMSAT News Service Bulletin 294.01
>From AMSAT HQ KENSINGTON, MD.
October 21, 2018
To All RADIO AMATEURS
BID: $ANS-294.01
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JY1SAT Pre-launch Integration Video
Wouter Weggelaar, PA3WEG posted a video showing flight preparations
for the JY1SAT cubesat, along with its other cubesat launch mates in
the QuadPack deployment system at Netherlands-based ISIS-Innovative
Solutions In Space:
https://www.youtube.com/watch?v=Y3qpUWM38FA&feature=youtu.be
JY1SAT is a one unit CubeSat, dedicated to the memory of His Majesty
the late King Hussein, the first founder of the HAM Radio in Jordan
and holder of call sign JY1. This will be Jordan's first satellite.
JY1SAT contains the AMSAT-UK FUNcube-6 communications transponder
with expanded capabilities to be able to transmit stored images
reflecting the Jordanian culture and its historical heritage, along
with a voice message recorded by the Crown Prince to be transmitted
in space to receivers around the world.
Frequencies for the JY1SAT FUNcube-6 transponder include:
* Uplink: 435.100 - 435.120 MHz CW, LSB
* Downlink: 145.855 - 145.875 MHz CW, USB
* Telemetry:145.840 MHz (FUNcube BPSK format; new Dashboard
software will be made available)
JYISAT will transmit pre-stored images of the Kingdom which have
been selected by a national competition. These images will be
downlinked using a SSDV digital format.
[ANS thanks Wouter Weggelaar, PA3WEG, AMSAT-UK for the above
information]
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Still More Amateur Radio Cubesats Ready for Launch
It would appear that the Falcon launch from Vandenberg AFB will be a
veritable feast of amateur radio satellites. The SpaceX Falcon-9
launch includes more than 40 cubesat passengers. Besides the JY1SAT,
this launch also includes ExseedSat-1 from India and AMSAT-NA's
Fox 1Cliff. Essential details for these fledgling birds are:
Exseedsat-1
Uplink: 435.340 MHz FM voice w/ 67 Hz CTCSS tone and APRS digipeater
Downlink: 145.900 MHZ FM voice, APRS digipeater, telemetry
Fox-1Cliff
Uplink: 435.300 MHz or 1267.300 MHz FM and 67Hz CTCSS tone
Downlink: 145.920 MHz FM (with Data Under Voice telemetry)
[ANS thanks AMSAT-NA for the above information]
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ARISS Joins NASA On-The-Air for a Special SSTV Event October 27-29
Amateur Radio On The International Space Station (ARISS) is planning
a very special Slow Scan TV event currently scheduled to start
October 27 about 1000 UTC. Helping to support the event will be
NASA's Space, Communication and Navigation (SCaN) Department.
The Space Communications and Navigation (SCaN) program manages
NASA's three most important communications networks: The Space
Network (SN), Near Earth Network (NEN), and the Deep Space
Network (DSN).
Just as in past ARISS SSTV commemorations, twelve images will be
downlinked, but this time with six featuring the SCaN educational
activities while the other six images will commemorate major NASA
anniversaries, i.e., when NASA was established, astronauts first
landing on the moon, etc.
In addition to the fun of receiving these images, participants can
qualify for a special endorsement for the NASA On The Air (NOTA)
celebration event. To learn more about NOTA visit
https://nasaontheair.wordpress.com.
Once received, images can be posted and viewed at
http://www.spaceflightsoftware.com/ARISS_SSTV/index.php.
The transmissions are expected to be broadcast at the usual
frequency of 145.800 MHz using the PD-120 SSTV mode.
Please note that the event is dependent on other activities,
schedules and crew responsibilities on the ISS and are subject to
change at any time.
More information will follow soon, so please continue to check for
news and the most current information on the AMSAT.org and
ARISS.org websites, the AMSAT-BB@?????.???? the ARISS Facebook at
Amateur Radio On The International Space Station (ARISS) page and
ARISS Twitter @????????????.
[ANS thanks ARISS and NASA for the above information.]
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Astronauts Land Safely After Abort
American astronaut Nick Hague, KG5TMV and Russian cosmonaut
Alexey Ovchinin are resting comfortably in the city of Baikonur,
Kazakhstan, after an anomaly occurred shortly after their launch.
The Soyuz MS-10 spacecraft launched from the Baikonur Cosmodrome
in Kazakhstan to the International Space Station at 4:40 a.m. EDT
Thursday, October 11 (2:40 p.m. in Baikonur time) carrying Hague
and Ovchinin. Shortly after launch, there was an anomaly with the
booster, and the launch ascent was aborted, resulting in a
ballistic landing of the spacecraft.
Search and rescue teams deployed to the landing site, arriving on
location before the spacecraft landed. Hague and Ovchinin were
recovered from the capsule and were in good condition. The crew
landed south of the city of Zhezkazgan, Kazakhstan, and was
transported by helicopter to the nearby city. A Roscosmos plane
then flew the pair to Baikonur, where they were greeted on the
tarmac by their families, NASA Administrator Jim Bridenstine,
Roscosmos Director General Dmitry Rogozin, and other NASA and
Roscosmos officials.
Hague and Ovchinin were taken to a local hospital for precautionary
medical checks. They are scheduled to return to the Gagarin
Cosmonaut Training Center in Star City, Russia, outside of Moscow,
on Friday, Oct. 12. Hague is expected to fly home to Houston next
week. Full details at https://tinyurl.com/ans294-abort.
[ANS thanks NASA for the above information.]
--------------------------------------------------------------------
LUME-1 to Test Wildfire Sensing and New Modulation Techniques
A 2U CubeSat, LUME-1 is a technological and educational mission
funded by European Commission within the FIRE-RS project
(Interreg SUDOE). The main goal of the mission is to involve students
and researchers in the development of a bidirectional communication
system based on cubesats.
The system is an evolution of the Humsat system tested in previous
missions of the University of Vigo (Humsat-D, SERPENS). The system
will be used to demonstrate its application in the notification of
wildfire alarms from sensors installed on the forests. As an
additional goal, telecommunication engineering PhD students will test
a software defined radio platform that can be used for several
applications: low-data rate communication, reception of ADS-B
signals, characterization of interference sources? The software
defined radio will be used also to test new modulations and services
for the radio amateurs. Experiments and waveforms will be uploaded
during flight. Proposing to use a UHF downlink with GFSK at 1k2 to
9k6 data rates. Planning a Soyuz launch from Vostochny Cosmodrome on
December 25, 2018 into a 550km sun synchronized orbit.
[ANS thanks the IARU for the above information.]
--------------------------------------------------------------------
Final ARISS Proposal Webinar to be held Tuesday, October 23rd
The Amateur Radio on the International Space Station (ARISS) program
is seeking proposals from US schools, museums, science centers and
community youth organizations (working individually or together) to
host radio contacts with an orbiting crew member aboard the
International Space Station (ISS) between July 1 and
December 31, 2019.
The proposal deadline is November 30, 2018. For proposal guidelines
and forms and more details, go to:
http://www.ariss.org/hosting-an-ariss-contact-in-the-us.html
The final Proposal webinars for guidance and getting questions
Answered will be offered October 23, 2018, at 8 pm Eastern Time.
Advance
registration is necessary. To sign up, go to
http://tinyurl.com/ANS-273-ARISSWebinar
[ANS thanks ARISS for the above information]
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AMSAT/ARISS Fundrazr Hits $10,000 Mark
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 $10,000 raised or about 7%
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
(Editor's Note: I have MY challenge coin. Do you have YOURS?)
[ANS thanks ARISS for the above information.
--------------------------------------------------------------------
Upcoming Satellite Operations
View the latest satellite operating announcements posted at:
https://www.amsat.org/satellite-info/upcoming-satellite-operations/
+ 3E, PANAMA (Special Event) ? Now through Oct 31, 2018
Members of the Radio Club de Panama and the GREMPA (an emergency
group) will activate the scout station 3E1JT from Panama between now
and Oct 31st. They will also participate during the Jamboree On
The Air [JOTA] (Oct 19-21st). Activity will be on all bands
using SSB including CW and the Satellites. QSL via HP1ALX
+ Eureka, Nanuvut (ER60, EQ79) ? Oct 17 ? Nov 10, 2018
Eureka ARC, VY0ERC, will be operational from October 17 until
Nov 10, 2018. Activity via FM satellites from ER60, EQ79 and
close grids is also scheduled. Watch for specific pass announcements
on their Twitter feed https://twitter.com/vy0erc
+ Huntsville to Switzerland, via Long Island (EM64, EM65, EM66, FN30,
JN36, JN47) ? Nov 1 ? Dec 7, 2018
Brennan, N4QX, fall ASMAT roving plans:
* EM64, EM65, and EM66 Nov 1-3
* FN30 November 16-17
* JN36 as HB9/N4QX & from 4U1ITU Nov 28 ? Dec 7 as work permits
* JN47 as HB9/N4QX & HB0/N4QX Dec 1-2
For now, FM only. Watch Twitter for pass announcements at
https://twitter.com/BrennanTPrice. QSLs *exclusively* via Logbook
of the World.
+ South Texas Grid Expedition (EL06, EL07, EL08, EL15, EL16, EL17,
EL18) ? November 11-15, 2018
Glenn, AA5PK, will be travelling through South Texas, November
11th-15th. Barring unforeseen circumstances, he will activate
EL06, EL07, EL08, EL15, EL16, EL17 and EL15. Glenn will be on
both FM and linear satellites and will post specific pass
announcements on Twitter, https://twitter.com/AA5PK. He will also
be position beaconing on APRS as AA5PK-9.
+ Bermuda (DXCC NA-005) ? Nov 12-14, 2018
Tom, N2YTF, will be operating as N2YTF/VP9/P from Bermuda, NA-005
vacation style Nov. 12, 13, 14; all FM passes (and perhaps a few
transponder birds). Tom will also be working HF QRP portable from
the beach. Tom is looking for a 2m SSB tropo path to some US super
station(s). If interested, contact him directly.
+ Key West, FL (EL94) ? Nov 27 ? Dec 1, 2018
Tanner, W9TWJ, will be vacationing in Key West, Florida from
Nov 27th to Dec 1, 2018. While there, he will work as many FM passes
as he can (holiday style). Keep an eye on his Twitter feed for
pass announcements at https://twitter.com/twjones85
+ RMS Queen Mary (DM03) ? Dec 15, 2018
Patrick , WD9EWK, will be part of a day of satellite operating from
a deck on the RMS Queen Mary, docked at Long Beach in southern
California, on Saturday December 15, 2018. Operations will be
portable, almost like a Field Day, and should include FM, SSB, and
possibly packet. All operations from the Queen Mary will be as W6RO,
the call sign for the wireless room on the ship operated by the
Associated Radio Amateurs of Long Beach. Depending on staffing in
the W6RO wireless room, there may also be HF activity during the
satellite operation. QSLing for the W6RO satellite activation will
be handled per the procedure on W6RO?s QRZ page
http://www.qrz.com/db/W6RO
[ANS thanks Robert Bankston, KE4AL for the above information.]
--------------------------------------------------------------------
ARISS News
+ Upcoming Contacts
Upcoming ARISS Contact Schedule as of 2018-10-18 19:00 UTC
Ashford School, Ashford, CT, direct via KZ1M
The ISS callsign is presently scheduled to be NA1SS.
The scheduled astronaut is Serena Aunon-Chancellor KG5TMT.
Contact is a go for: Mon 2018-10-22 13:05:49 UTC @ 49 deg.
Integrierte Gesamtschule Osterholz-Scharmbeck, Osterholz ?
Scharmbeck, Germany and Gymnasium Soltau, Soltau, Germany, direct
via DN3HB and DN5ABG (Alexander Gerst KF5ONO).
Tue 2018-10-23 09:14:26 UTC @ 63 deg.
Martin-Andersen-Nex?-Gymnasium Dresden/DLR_School_Lab TU Dresden,
Dresden, Germany, and Liborius-Gymnasium Dessau, Dessau-Ro?lau,
Germany, direct via DL?TSD and DK?LG (Alexander Gerst KF5ONO).
Wed 2018-10-24 08:22:55 UTC @ 78 deg.
Delcastle Technical High School, Wilmington, DE direct via K2CCW
The ISS callsign is presently scheduled to be NA1SS.
The scheduled astronaut is Serena Aunon-Chancellor G5TMT.
Contact is a go for: Wed 2018-10-24 17:48:48 UTC @ 52 deg.
+ Completed Contacts Since October 7, 2018
2018-10-08 17:05 UTC between Serena Aunon-Chancellor KG5TMT using
ISS callsign NA1SS and Allen Park Elementary School, Lee County
School District, Ft. Myers, FL. Contact was direct via W?CTL.
ARISS Mentor was Ryan W4NTR.
2018-10-10 07:58 UTC between Sergei Propopev using ISS callsign
RS?ISS and About Gagarin from Space. Conducting a session of radio
amateur communication with students and postgraduate students of G.
Blagoveshchensk, Amur University. Contact was direct via R??J.
ARISS Mentor was Sergey RV3DR.
2018-10-12 10:40 UTC between Sergei Propopev using ISS
callsign RS?ISS and Kursk University. Contact was
direct. ARISS Mentor was Sergey RV3DR.
2018-10-16 10:28 UTC between Alexander Gerst KF5ONO using ISS
callsign DP?ISS and Ganerben-Gymnasium Kuenzelsau + Georg-Wagner-
Schule, Kuenzelsau, Germany. Contact was direct via DN6SP. ARISS
Mentor was Peter IN3GHZ.
2018-10-16 12:04 UTC between Alexander Gerst KF5ONO using ISS
callsign OR4ISS and Sint-Jozefcollege, Turnhout, Belgium. Contact
was direct via ON4NOK. ARISS Mentors were Stefan ON6TI and
Jan ON7UX.
Valley High School, Albuquerque, NM, direct via NM5HD
The ISS callsign was NA1SS.
The scheduled astronaut was Serena Aunon-Chancellor KG5TMT.
The contact was successful on Thu 2018-10-18.
+ ARISS congratulations the following mentors who have now
mentored over 100 schools:
Satoshi 7M3TJZ with 135
Francesco IK?WGF with 132
Gaston ON4WF with 123
Sergey RV3DR with 108
[ANS thanks ARISS, Charlie AJ9N and David AA4KN for the above
information]
--------------------------------------------------------------------
Shorts from All Over
+ Maintenance Window for AMSAT.org Domain
AMSAT's service provider has announced they will be doing some
maintenance on their systems that will require a reboot of the
server that hosts www.amsat.org.
The outage is expected to last a matter of minutes, and will happen
during one of three maintenance windows for October 25th - 27th from
0200 to 1400 UTC. Services on this machine include web and mail for
the amsat.org domain, the telemetry server and Echolink,
[ANS thanks AMSAT's IT Manager, Joe Fitzgerald, KM1P for the
above information]
+ ARISS-International Highlights
During the past week representatives from ARISS-International teams
from have been participating in a face to face meeting in Baltimore,
Maryland. Dave Jordan, AA4KN, ARISS PR has been posting on ARISS'
official Facebook page at Amateur Radio On The ISS (ARISS). Dave has
been documenting the week with photos and video clips at
https://tinyurl.com/ANS294-ARISS-Facebook
[ANS thanks Dave AA4KN for the above information]
+ AMSAT-UK Colloquium ARISS Talk on YouTube
Video of talk at AMSAT-UK Colloquium/RSGB Convention Milton Keynes
ARISS Report by Ciaran Morgan M0XTD and Eleanor Griffin M6NWZ given
Saturday, Oct 13, 2018 can be seen at either
https://www.youtube.com/watch?v=cgwnmx-gxOE or
https://youtu.be/cgwnmx-gxOE
[ANS thanks AMSAT-UK for the above information.]
+ RymanSat-00 Team Statement
The RymanSat team announced that RSP-00 was released from the ISS
on October 6th. Although its ground station has been attempting
communication with the satellite, they still have not been able to
receive any signals from it. They have not received transmissions
that are supposedly transmitted for 30 minutes after release, and
it is most likely that the satellite is currently out of service.
The report that they will continue our efforts to communicate with
the satellite. Further information is available at
https://rymansat.com/en.
[ANS thanks the RymanSat project for the above information.]
+ EQUiSat Optical Beacon CubeSat Update
Michael Umbricht, W9GYR reported on October 1 that the first packet
was received since SatNOGS reported a reception on Sept. 29. The
batteries had been struggling with a lack of sunlight and it was the
second recent dropout in communications and was longer than the first.
"Any reports of radio reception during this time would be greatly
appreciated and will help us understand the health of the spacecraft.
We expect that daytime passes will have a stronger signal and it
might even go to sleep at night. After the next long "winter" in
November the satellite will then get the largest boost in solar
energy that it has ever seen when the orbit lines up with the
Earth's solstice.
It is 435.550 MHz with a 12.5 kHz narrow 4FSK channel. The Doppler
shift is +/- 10 kHz max. If the radio is too cold I estimate it
could have a 0.5 to 1 kHz error in transmission frequency."
The very next day, Scott Chapman, K4KDR reported strong signals from
EQUISat. View his SDR screen capture at
https://tinyurl.com/equisat-update-pg8.
[ANS thanks Michael, W9GYR and Scott, K4KDR for the above
information.]
+TJREVERB scheduled for Launch November 17, 2018
NASA has announced that its NG-10 mission is scheduled for a
November 17th launch from the Wallops Flight Facility in Virginia.
Included among its nine CubeSat missions is TJREVERB from the
Thomas Jefferson High School for Science and Technology. The 2U
satellite will operate as an APRS relay. Stay tuned for more
information as the launch date approaches.
[ANS thanks NASA for the above information.]
+Microwave Update 2018 Papers Available for Download
Microwave Update (MUD) recently completed its annual meeting
October 12-13 in Dayton, Ohio.
A PDF of the MUD 2018 proceedings is now available:
MUD2018_Proceedings The table of contents is indexed in the
PDF. If you are prompted to log into Dropbox there should be an
option to continue without logon.
Microwave Update (MUD) is an international
conference dedicated to microwave equipment
design, construction, and operation. It is focused
on, but not limited to, amateur radio on the
microwave bands.
[ANS thanks Microwave Update for the above information.]
+ Cubesat Developers Workshop 2019 Call for Papers
The Cubesat Developers Workshop is scheduled for April 23-25, 2019
at Cal Poly Performing Arts Center in San Luis Obispo, CA. The
deadline for abstract and poster submissions is January 4th, 2019.
For more information see http://www.cubesat.org/workshop-information.
[ANS thanks Cubesat.org for the above information.]
+ Dreaming of Flying a Satellite into Space but Not Sure How?
Wonder no more! The ESA Education Office and ESA's Systems and
Concurrent Engineering Section are looking for university students
to participate in the second edition of ESA Academy's Concurrent
Engineering Workshop dedicated to CubeSats. The four-day workshop
will be organized between 15 January 15-18, 2019 at the Training
and Learning Facility in ESEC-Galaxia, Belgium. More information
available at:
http://www.esa.int/Our_Activities/Space_Engineering_Technology/CDF.
[ANS thanks the European Space Agency for the above information.]
--------------------------------------------------------------------
In addition to regular membership, AMSAT offers membership in the
President's Club. Members of the President's Club, as sustaining
donors to AMSAT Project Funds, will be eligible to receive
additional benefits. Application forms are available from the
AMSAT office.
Primary and secondary school students are eligible for membership at
one-half the standard yearly rate. Post-secondary school students
enrolled in at least half time status shall be eligible for the
student rate for a maximum of six post-secondary years in this
status.
Contact Martha at the AMSAT office for additional student
membership information.
73,
This week's ANS Editor,
Frank Karnauskas, N1UW
n1uw at amsat dot org
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!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Sun, 21 Oct 2018 09:08:11 -0400
From: Burns Fisher <burns@??????.??>
To: n0jy@?????.???
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] 2 meter interference from WiFi hub
Message-ID:
<CABX7KxVsTi6oGjGT3c2+gQhW_xOD3aiiT=0KugOs-==gmjgfVA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks, Jerry. This one is clearly mine. I unplug it...the frequency
comes back. I thought it might be beating two different channels, and I
guess that's possible but the WiFi channels are 5MHz apart, although they
do overlap. For now, I'll just turn it off when trying to use AO-91 :-)
On Sun, Oct 21, 2018 at 12:57 AM Jerry Buxton <n0jy@?????.???> wrote:
> On 10/20/2018 18:57, Burns Fisher wrote:
> > So the question is: I want to replace this with another WiFi hub. Does
> > anyone have good or bad recommendations for a hub that does not generate
> a
> > lot of RF? (When you google Wi-Fi and RF interference, you mainly get
> other
> > things that interfere with Wi-Fi :-))
> I have an older router that caused me some problems, but it's not made
> any longer so you don't have to worry about not buying one. I solved
> that problem by moving it out of the attic, to a downstairs bedroom
> farther away.
>
> But just FYI for possible future problems, I do still pick up
> interference from a neighbor that gets in the way of AO-73 and AO-92 at
> the lower end of their passband/Doppler shift. So it may not always be
> your own!
>
> Jerry Buxton, N?JY
>
> _______________________________________________
> 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: 3
Date: Sun, 21 Oct 2018 21:12:26 +0800
From: Hans BX2ABT <hans.bx2abt@???.?????.???>
To: M5AKA via AMSAT-BB <amsat-bb@?????.???>
Subject: [amsat-bb] KR-400 transformer wiring
Message-ID: <fed2f3af-069d-c96f-e6cb-a880b24628c4@???.?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
I got this old KR-400 azimuth rotor as a gift, but is wired for 220V and
I need to run it off of 110V. The transformer's wiring now looks like this:
???? |? 220V? |
???? |??????? |
|~~~~|~~~~|?? |~~~~|~~~~|
5??? 1??? 3?? 6??? 2??? 4
|????????????????? |
|__________________|
If the drawing is messed up, here is the gist of it: The primary
consists of two (parallel/separate) windings, one with odd, one with
even numbering (3-5 and 4-6) with the center of the winding named 1 and
2. Currently 2 and 5 are shorted and 220V comes in at 1 and 6. So
current flows from 1 to 5 to 2 to 6 and vice versa.
To rewire to 110V I guess I just use any of the combination 1-3, 1-5,
2-4 or 2-6. But I am just curious why the 220V wiring was done over two
coils, not one? Was this factory standard or has my unit been modified
with a different transformer?
Once I get the control unit powered up it time to test the rotator and
see if it needs any maintenance (probably will, because it hasn't been
used for a long while).
------------------------------
Message: 4
Date: Sun, 21 Oct 2018 10:38:24 -0400
From: Glenn Little WB4UIV <glennmaillist@?????????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] KR-400 transformer wiring
Message-ID: <73573b8d-fc26-76e2-aa56-d3264f7001f3@?????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
The transformer has two primary windings so that the two windings can be
placed in series for 220 and in parallel for 110 VAC.
It looks like your transformer is set with taps to finely adjust the
input voltage to match your mains supply.
None of the online schematics, that I can find, show how the primary is
wired for 110/220 VAC.
Search for your rotor on line for further information.
73
Glenn
WB4UIV
On 10/21/2018 9:12 AM, Hans BX2ABT wrote:
> I got this old KR-400 azimuth rotor as a gift, but is wired for 220V
> and I need to run it off of 110V. The transformer's wiring now looks
> like this:
>
>
> ???? |? 220V? |
> ???? |??????? |
> |~~~~|~~~~|?? |~~~~|~~~~|
> 5??? 1??? 3?? 6??? 2??? 4
> |????????????????? |
> |__________________|
>
>
> If the drawing is messed up, here is the gist of it: The primary
> consists of two (parallel/separate) windings, one with odd, one with
> even numbering (3-5 and 4-6) with the center of the winding named 1
> and 2. Currently 2 and 5 are shorted and 220V comes in at 1 and 6. So
> current flows from 1 to 5 to 2 to 6 and vice versa.
>
> To rewire to 110V I guess I just use any of the combination 1-3, 1-5,
> 2-4 or 2-6. But I am just curious why the 220V wiring was done over
> two coils, not one? Was this factory standard or has my unit been
> modified with a different transformer?
>
> Once I get the control unit powered up it time to test the rotator and
> see if it needs any maintenance (probably will, because it hasn't been
> used for a long while).
>
> _______________________________________________
> 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
--
-----------------------------------------------------------------------
Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@????.??? AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
------------------------------
Message: 5
Date: Sun, 21 Oct 2018 08:49:36 -0600
From: "H. Stephen Nipper" <stephennipper@?????.???>
To: Glenn Little WB4UIV <glennmaillist@?????????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] KR-400 transformer wiring
Message-ID:
<CAPf7+3rO7Hf+=wx7H1BkSdDG8RD68qCL0Pac23oNOh0sVpd7dg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The manual I found online stated that they used a different transformer for
120 or 220 volts. To check the operating voltage on the back of the
controller and to return it to factory to get the right voltage transformer.
Check with Yaesu and see if they can offer any help.
On Sun, Oct 21, 2018, 8:40 AM Glenn Little WB4UIV <
glennmaillist@?????????.???> wrote:
> The transformer has two primary windings so that the two windings can be
> placed in series for 220 and in parallel for 110 VAC.
> It looks like your transformer is set with taps to finely adjust the
> input voltage to match your mains supply.
>
> None of the online schematics, that I can find, show how the primary is
> wired for 110/220 VAC.
>
> Search for your rotor on line for further information.
>
> 73
> Glenn
> WB4UIV
>
> On 10/21/2018 9:12 AM, Hans BX2ABT wrote:
> > I got this old KR-400 azimuth rotor as a gift, but is wired for 220V
> > and I need to run it off of 110V. The transformer's wiring now looks
> > like this:
> >
> >
> > | 220V |
> > | |
> > |~~~~|~~~~| |~~~~|~~~~|
> > 5 1 3 6 2 4
> > | |
> > |__________________|
> >
> >
> > If the drawing is messed up, here is the gist of it: The primary
> > consists of two (parallel/separate) windings, one with odd, one with
> > even numbering (3-5 and 4-6) with the center of the winding named 1
> > and 2. Currently 2 and 5 are shorted and 220V comes in at 1 and 6. So
> > current flows from 1 to 5 to 2 to 6 and vice versa.
> >
> > To rewire to 110V I guess I just use any of the combination 1-3, 1-5,
> > 2-4 or 2-6. But I am just curious why the 220V wiring was done over
> > two coils, not one? Was this factory standard or has my unit been
> > modified with a different transformer?
> >
> > Once I get the control unit powered up it time to test the rotator and
> > see if it needs any maintenance (probably will, because it hasn't been
> > used for a long while).
> >
> > _______________________________________________
> > 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
>
> --
> -----------------------------------------------------------------------
> Glenn Little ARRL Technical Specialist QCWA LM 28417
> Amateur Callsign: WB4UIV wb4uiv@????.??? AMSAT LM 2178
> QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
> "It is not the class of license that the Amateur holds but the class
> of the Amateur that holds the license"
>
> _______________________________________________
> 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: Sun, 21 Oct 2018 11:08:17 -0400
From: <kb2mjeff@???.???>
To: "Amsat" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AlfaSpid issue
Message-ID: <CBCA4EE951B64490AA0941FD0EDE0317@???????>
Content-Type: text/plain; charset="UTF-8"
After going over the schematic (Thanks Dimitry) I see nothing wrong with the
hardware, in fact I wonder if there was ever a hardware issue. I used the EL
cable to move the antennas CCW about 1.5 turns. When I fired it up after
replacing the relays it was stuck in CW on. I had to do this in an odd way ,
by resetting the el down 20 degrees at a time to bring the antennas back to
north. Now I get no tactile(relay click on CCW AND EL up with the cables
disconnected. All 4 relays seem good, this to me appears to be in the ROT2
firmware. Jerking around with the buttons in the setup routines in a meaning
less way will get all for relays to click, but when I go to operational mode
I?m back to CCW and EL only. Monday I?m going to try and contact someone who
represents this company in the US. Anyone have a contact for AlfaSpid in the
US? It seems there are lots of issues with this controller...
73 Jeff kb2m
I had similar problems to this over the last 18 months with the SPID ROT2
controller.
It was replaced 3 times and showed the same issue as you have intermittently
over this time. I am using MacDoppler and my supplier and the manufacturer
were convinced it was software.
On returning to the manufacturer and taking the trouble to get my concerns
and issues translated into Polish. I track numerous satellites, some one
after another and listed all of this. So I returned the controller and rotor
to Poland (at their expense) but they only tracked the ISS over a couple of
days and found nothing wrong. Not wanting to continue with the ROT2 as I was
convinced this was the issue I upgraded to their MD02 controller. Although
this has its own quirks I have not suffered from the same relay related
issue since.
There are also several YouTube videos of the problem that yours is
exhibiting https://youtu.be/GWbhez5vadM
Sorry I haven?t got the cure.
Best 73
Pete G0ABI
On 20 Oct 2018, at 23:37, kb2mjeff@???.??? wrote:
Here I go answering my own questions. I think I found part of my problem.
The buttons don't
line up in the case very well and caused the rotor to hung up turning in
one direction. That was problem number two, I fixed problem number one the
bad relay that started all of this.To fix this temporality I have the board
out of the case to test and what is now happening is that I still can't
turn CCW. All buttons work ok except for the CCW button. I tried a reset
thinking that I'm over some set location in the firmware that I cant go CCW,
but the reset doesn't work. I replaced all 4 relays. With the rotor
completely disconnected I can get a relay click for every rotational control
button except CCW, it has to be a glitch in the firmware I can't clear, as I
replaced all four relays. And no I really don't want to spend the $900 for
the green heron controller. Any other ideas?
Thanks for your help...
73 Jeff kb2m
-----Original Message----- From: kb2mjeff@???.???
Sent: Saturday, October 20, 2018 3:37 PM
To: Amsat
Subject: [amsat-bb] AlfaSpid issue
I?m back at my winter home in Florida and decided today, to work on my
AlfaSpid rotor control box issue. I replaced two relays to fix the Elevation
issue but in testing it before I replaced the other two relays I?m now
having a problem with the azimuth that?s been working 100% until this point.
When I turn on the rotor control the elevation now seems to work ok, but now
the azimuth immediately goes into a clockwise rotation. No matter what I do
to the controller, upon startup it starts turning CW, only way to stop is to
power it down The azimuth was working fine this morning when a worked a
couple of sat passes. Anyone have any ideas? Does anyone know where I can
send this to have it fixed? I have no schematic, or even simple instructions
on how to reset, etc.
73
---
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------------------------------
Message: 7
Date: Sun, 21 Oct 2018 11:08:16 -0400
From: Burns Fisher <burns@??????.??>
To: n0jy@?????.???
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] 2 meter interference from WiFi hub
Message-ID:
<CABX7KxWVvoouK9vGn9XLYsbx7zz3LdcDuUR59Gmay0iPsUO9-w@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Turns out it was NOT the hub. It was the camera I had plugged into it with
CAT5. The camera is looking at my antennas so I can see where they are
rotating, but the wire runs a ways. Probably radiates nicely, and
conveniently right in the 2 meter band. More fooling around required...
On Sun, Oct 21, 2018 at 9:08 AM Burns Fisher <burns@??????.??> wrote:
> Thanks, Jerry. This one is clearly mine. I unplug it...the frequency
> comes back. I thought it might be beating two different channels, and I
> guess that's possible but the WiFi channels are 5MHz apart, although they
> do overlap. For now, I'll just turn it off when trying to use AO-91 :-)
>
> On Sun, Oct 21, 2018 at 12:57 AM Jerry Buxton <n0jy@?????.???> wrote:
>
>> On 10/20/2018 18:57, Burns Fisher wrote:
>> > So the question is: I want to replace this with another WiFi hub. Does
>> > anyone have good or bad recommendations for a hub that does not
>> generate a
>> > lot of RF? (When you google Wi-Fi and RF interference, you mainly get
>> other
>> > things that interfere with Wi-Fi :-))
>> I have an older router that caused me some problems, but it's not made
>> any longer so you don't have to worry about not buying one. I solved
>> that problem by moving it out of the attic, to a downstairs bedroom
>> farther away.
>>
>> But just FYI for possible future problems, I do still pick up
>> interference from a neighbor that gets in the way of AO-73 and AO-92 at
>> the lower end of their passband/Doppler shift. So it may not always be
>> your own!
>>
>> Jerry Buxton, N?JY
>>
>> _______________________________________________
>> 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
>>
>
------------------------------
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!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 13, Issue 346
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