December 2018 - AMSAT-BB - mailman.amsat.org

VHF/UHF/SHF Antenna book recommendations?
by Bob Hammond 12 Dec '18

12 Dec '18

Any recommendations on a good book for VHF/UHF/SHF antenna theory, construction, design? Hopefully including polarity switches.....or is it really necessary? Bob WL7CQX

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Fox in a Box Question
by Doug Phelps 11 Dec '18

11 Dec '18

I had no problem replicating the Fox in a Box. My 3B+ runs around 70% CPU when decoding white noise. I am having trouble receiving the satellites because of the Spike in the center of the passband as well as images to the side. Is there anyway to compensate for the offset voltage in LINUX that will run on the P! 3B+? Programs like HDSDR allow you to do the correction within the program but I cannot find where to do it in Fox Telem. There is a Funcube control program for Windows but I have not found one for the PI. According to the Fauncube site, alignment is required every time you loose power to the PI. Also, I presume that the internet interface for the leader board is not supported? When I click on leaderboard, I get a message that it is not supported but when I acknowledge the pop up, the web brouser launches. It does not seem to have this problem when sending or receiving data to the server. Is this normal. I you would like to call me, my number is 847-514-8566. Thank you for all of the work you put into the Fox in a Box. If I can fix the DC offset problems, I plan to deploy one to Denver, CO and another to McAllen TX. Sent with [ProtonMail](https://protonmail.com) Secure Email.

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AO-73 Telemeter
by Greg 11 Dec '18

11 Dec '18

I copied my first telemetry from FunCube 1 back in 2016 and copied it for several months, on and off. Then I got interested in other things and didn't copy it for a while. Now I am back and have an anomaly that I would like to have some advice on. For the last few months I have not been very successful in copying telemetry. I seem to be getting good signals with a M2 2MCP22 controlled in AZ and EL. I use an Icom IC-910H for the receiver. I could not get dashboard to reliably auto tune. I use HRD Satellite to tune the rig for doppler set to 145.935. If I set the rig to USB, I don't copy anything. So just playing around I tried CW and can hear the data but still not copy. Then I tried adjusting the RIT and I stated copying. I only adjusted the RIT -0.65. Should I go back to USB and adjust the frequency to find the signal? Has the satellite changed from 145.935 or is it something here? Thanks for your input! 73 Greg W4GHW

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AO-73 Telemetry
by Greg Walls 11 Dec '18

11 Dec '18

I copied my first telemetry from FunCube 1 back in 2016 and copied it for several months, on and off. Then I got interested in other things and didn't copy it for a while. Now I am back and have an anomaly that I would like to have some advice on. For the last few months I have not been very successful in copying telemetry. I seem to be getting good signals with a M2 2MCP22 controlled in AZ and EL. I use an Icom IC-910H for the receiver. I could not get dashboard to reliably auto tune. I use HRD Satellite to tune the rig for doppler set to 145.935. If I set the rig to USB, I don't copy anything. So just playing around I tried CW and can hear the data but still not copy. Then I tried adjusting the RIT and I stated copying. I only adjusted the RIT -0.65. Should I go back to USB and adjust the frequency to find the signal? Has the satellite changed from 145.935 or is it something here? Thanks for your input! 73 Greg W4GHW

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AO-95 Audio2
by Pedro Converso 11 Dec '18

11 Dec '18

AO-95 Audio Orb.116 13:16 UTC over Buenos Aires, S9+10 FT-897+5elem.Yagi (3TLMs) including DUV http://amsat.org.ar/1812111316.wav 73, LU7ABF, Pedro

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AO-95 Audio1
by Pedro Converso 10 Dec '18

10 Dec '18

Over Buenos Aires 3 TLMs: http://amsat.org.ar/1812110230.wav 73, LU7ABF, Pedro

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Upcoming ARISS Contact Schedule as of 2018-12-11 02:30 UTC
by aj9n＠aol.com 10 Dec '18

10 Dec '18

Upcoming ARISS Contact Schedule as of 2018-12-11 02:30 UTC Quick list of scheduled contacts and events: Collège Léonce Bourliaguet, Thiviers, France, direct via F5KEM The ISS callsign is presently scheduled to be OR4ISS The scheduled astronaut is Serena Aunon-Chancellor KG5TMT Contact was successful: Mon 2018-12-10 13:12:07 UTC 59 deg (***) ARISS Contact Applications (United States) The ARISS-US program’s education proposal window open Oct. 1 - Nov. 30, 2018 has now closed. The next window should go open in the spring of 2019. The ARISS webpage is at http://www.ariss.org/ Note that there are links to other ARISS websites from this site. ARISS Contact Applications (Europe, Africa and the Middle East) Schools and Youth organizations in Europe, Africa and the Middle East interested in setting up an ARISS radio contact with an astronaut on board the International Space Station are invited to submit an application from September to October and from February to April. Please refer to details and the application form at www.ariss-eu.org/school-contacts. Applications should be addressed by email to: school.selection.manager(a)ariss-eu.org ARISS Contact Applications (Canada, Central and South America, Asia and Australia and Russia) Organizations outside the United States can apply for an ARISS contact by filling out an application. Please direct questions to the appropriate regional representative listed below. If your country is not specifically listed, send your questions to the nearest ARISS Region listed. If you are unsure which address to use, please send your question to the ARISS-Canada representative; they will forward your question to the appropriate coordinator. For the application, click here. ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD ARISS-Japan, Asia, Pacific and Australia: Keigo Komuro, JA1KAB, Japan Amateur Radio League (JARL) ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) ****************************************************************************** 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(a)amsat.org or aj9n(a)aol.com. Listen for the ISS on the downlink of 145.8Ø 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(a)sbcglobal.net **************************************************************************** ARISS congratulations the following mentors who have now mentored over 100 schools: Satoshi 7M3TJZ with 135 Francesco IKØWGF with 132 Gaston ON4WF with 123 Sergey RV3DR with 108 **************************************************************************** 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 2018-12-11 02:30 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 1284. (***) Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1227. (***) 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: 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: DPØISS, IRØISS, NA1SS, OR4ISS, RSØISS **************************************************************************** The successful school list has been updated as of 2018-12-11 02:30 UTC. (***) http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf Frequency chart for packet, voice, and crossband repeater modes showing Doppler correction as of 2005-07-29 04:00 UTC http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction .rtf Listing of ARISS related magazine articles as of 2006-07-10 03:30 UTC. http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf Check out the Zoho reports of the ARISS contacts https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415 **************************************************************************** Exp. 56 on orbit Serena Aunon-Chancellor KG5TMT Alexander Gerst KF5ONO Sergei Propopev Exp. 58 on orbit Oleg Konenenko David St-Jacques KG5FYI Anne McClain **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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Skeds - KL7, DE ID ME NV RI SD VT
by M Thomas 10 Dec '18

10 Dec '18

Hello I am looking for skeds for the following states, please. Thanks to Gabe, I crossed off KH6 last night. FM or linear Thanks!!! Mark N9UM EN52

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FoxTelem Program & RTL820T Dongles
by Bob KD7YZ 10 Dec '18

10 Dec '18

After reading the manual from FoxTelem, I decided to thy the 192KHz wide suggestion they made ... the intent being to use SDR-Console/Satellite and the RTL820T Dongle. SDRC/Satellite is unable to auto-switch to the next in a list of Sats so making a bandwidth big enough to take in the lower end of one to the upper end of the others means, technically, 'set and forget' . I never did understand though where the Find-Sat "switch" was. I was hoping a strong signal somewhere in the bandwidth, which I could see was wide enough to cover the 4, would be enough to make the FoxTelem program seek out the Sat and decode it. I'd hoped to be able to activate the programs overnight and collect from 85 91 92 95 . It didn't work out. Though in testing, I could visually see the Telem/Signal come up. So is anyone using this combo willing to give me some pointers? Thanks -- 73 Bob KD7YZ AMSAT LM #901

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Tracking objects from the SSO-A launch
by Nico Janssen 10 Dec '18

10 Dec '18

All, Separations between the objects from the SSO-A launch are remarkably small, some no more than 1 or 2 s. And not all TLE sets have been published yet. So identifying objects is hard for the time being. But for tracking purposes I have some suggestions. For JY1Sat use object 43759, for ITASat 1 use object 43760, for Fox 1Cliff use object 43767 and for Move 2 use object 43761. These should work well for now. But note that these assignments may change later on. 73, Nico PA0DLO

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