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

Extra Extra New Items in AMSAT Store
by Bruce 07 Jun '18

07 Jun '18

Extra, Extra, you can read all about it. The AMSAT Store has three new items. New for 2018 is the AMSAT Hat. Now available in sizes Small (which fits small/medium sized heads) and Large (which fits large/xlarge size heads). We also have the new for 2018 T-Shirts in multiple sizes and the 2018 Golf Shirt in multiple sizes. I have only loaded a small amount of each as Martha has not unpacked all the boxes. As soon as we get an accurate count for each size, I will update as necessary. 73...bruce -- Bruce Paige, KK5DO AMSAT Director Contests and Awards AMSAT Board Member 2016-2018 ARRL Awards Field Checker (WAS, 5BWAS, VUCC), VE Houston AMSAT Net - Wed 0100z on Echolink - Conference *AMSAT* Also live streaming MP3 at http://www.amsatnet.com Podcast at http://www.amsatnet.com/podcast.xml or iTunes Latest satellite news on the ARRL Audio News http://www.arrl.org AMSAT on Twitter http://www.twitter.com/amsat

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Upcoming ARISS Contact Schedule as of 2018-06-07 23:30 UTC
by aj9n＠aol.com 07 Jun '18

07 Jun '18

Upcoming ARISS Contact Schedule as of 2018-06-07 23:30 UTC Quick list of scheduled contacts and events: ****************************************************************************** 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: Francesco IKØWGF with 132 Satoshi 7M3TJZ with 129 Gaston ON4WF with 123 Sergey RV3DR with 103 **************************************************************************** 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 2018-06-07 23:30 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 1231. Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1180. 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: 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: DPØISS, IRØISS, NA1SS, OR4ISS, RSØISS **************************************************************************** The successful school list has been updated as of 2018-05-31 23:00 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. 55 on orbit Drew Feustel Oleg Artemyev Ricky Arnold KE5DAU **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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Re: [amsat-bb] Unsuccessful Uplinks - AO-92
by John Belstner 07 Jun '18

07 Jun '18

I have been been quite successful on SO-50, AO-85, AO-91 and AO-92 with 5W from my TH-D72A (full duplex) and Arrow antenna; even at low elevations. I think you will find that poor operating behavior from others on the bird is the primary reason for not being able to get through on any given pass. John - W9EN

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AO-92 Mode L plans for Field Day?
by Greg D 07 Jun '18

07 Jun '18

Hi folks, Have plans been made for AO-92 during the Field Day window? I'm wondering if it will be in Mode L or not... Thanks, Greg KO6TH

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Re: [amsat-bb] DSLWP UHF Test Plan 7 Jun & 8 Jun
by W M WILLOUGHBY 07 Jun '18

07 Jun '18

I have put together a how-to guide for decoding DSLWP GMSK telemetry. It is available here: https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxyZWR3… 73, Red KC4LE

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Re: [amsat-bb] Unsuccessful Uplinks - AO-92
by k6vug＠sbcglobal.net 07 Jun '18

07 Jun '18

Drew KO4MA, is absolutely right, operating full duplex is the best way to work these satellites. Having said that, I was stumped once when I heard the AO-92 downlink "full quieting" for the entire pass but could not get into the uplink. Strangely enough, I heard only 2 stations calling and no one responding. It was pretty frustrating, making me doubt everything I had learned so far. Then one day, I found out (right here on this BBS) that the satellite switches to L/V mode, then it all made sense. Now I always check the current status page at AMSAT.ORG especially when operating AO-92. I also learned about why it difficult to get into AO-85 with a HT. Keep reading, you'll learn a lot here from the gurus... trust me :) Good luck on the next pass... 73!Umeshk6vug ------------------------------ Message: 12 Date: Wed, 6 Jun 2018 20:25:49 -0400 From: "Andrew Glasbrenner" <glasbrenner(a)mindspring.com> To: "'Hugo Dominguez, Jr.'" <hugois(a)gmail.com>, <amsat-bb(a)amsat.org> Subject: Re: [amsat-bb] Unsuccessful Uplinks - AO-92 Message-ID: <002c01d3fdf6$16120c20$42362460$(a)mindspring.com> Content-Type: text/plain; charset="UTF-8" You've discovered one of the reasons full duplex is best on the FM sats...you have no idea if you are getting through, because you can't hear while transmitting. Got another radio so you can work full duplex? 73, Drew KO4MA -----Original Message----- From: AMSAT-BB <amsat-bb-bounces(a)amsat.org> On Behalf Of Hugo Dominguez, Jr. Sent: Wednesday, June 06, 2018 7:41 PM To: amsat-bb(a)amsat.org Subject: [amsat-bb] Unsuccessful Uplinks - AO-92 I?ve just started playing with talking on satellites. I?m able to hear all the satellites (AO-85, AO-91, AO-92 and SO-50) that I have programmed on my Kenwood TH-D74, which I use with my Elk dual band periodic log antenna. However no one can hear me or responds to me. I?ve only been successful with my uplink (being heard) on AO-91 on several passes. I triple checked my frequencies on my radio and the 67 Hz tone and they are set as follows: Sat. Xmit Tone SO-50 145.850 67.0 Hz AO-85 435.170 67.0 Hz AO-91 435.250 67.0 HZ AO-92 435.350 67.0 Hz These are the frequencies used when the bird is at its peak. I adjust for doppler on 440 by starting out 10 khz less, e.g AO-85 435.160, 435.165, 435.170, 435.175, 435.180. Any ideas if something has changed from what is published or am I missing something? Like I said, i?ve been able to communicate on AO-91. ? Hugo Dominguez, Jr. ------------------------------

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Re: [amsat-bb] Unsuccessful Uplinks - AO-92
by k6vug＠sbcglobal.net 07 Jun '18

07 Jun '18

Hugo, you wrote, "perform doppler shift by starting 10 kHz below and work your way up", but this should not be generalized because the Doppler correction is opposite for the Receiver and the Transmitter. (1) At the Receiver - - when the transmitter (bird) is coming towards you, its frequency appears higher than its real frequency - when the transmitter (bird) is going away from you, its frequency appears lower than its real frequency (2) So, ideally, the Transmitter, has to compensate the opposite way, to be received at the correct frequency. (3) But since the satellite does not use Doppler corrections, the ground station has to provide the correction for both RX as well as TX. If you like, you can read the amazing article "The One True Rule For Doppler Correction", published by AMSAT in 1994. The key words are "AT THE SATELLITE". Also, just watch the frequencies shown by any satellite tracking program like SatPC32 or HRD Sat Tracker, and you'll see what is really going on. Happy bird hunting...! 73! Umesh, K6VUG ------------------------------ Message: 4 Date: Wed, 6 Jun 2018 21:50:20 -0700 From: "Hugo Dominguez, Jr." <hugois(a)gmail.com> To: Daniel Wight <kd7lee(a)gmail.com> Cc: amsat-bb(a)amsat.org Subject: Re: [amsat-bb] Unsuccessful Uplinks - AO-92 Message-ID: <00C95211-D98E-4656-A393-D425DA744CF2(a)gmail.com> Content-Type: text/plain; charset=utf-8 Thanks. All the web pages I read said to perform doppler shift by starting 10 kHz below and work your way up. Even this amsat website has instructions to do it how I am doing it: https://amsat-uk.org/2018/01/26/ao-92-open-for-amateur-radio-use/ I also just noticed that there is a schedule for the L-band for uplink which i?m interpreting that UHF won?t work when the bird is setup for the L-band for uplink. Maybe I was trying to make contact when it was on the L band. ? Hugo Dominguez, Jr.

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May/June 2018 Apogee View Posted
by Paul Stoetzer 07 Jun '18

07 Jun '18

The May/June 2018 edition of Apogee View, an update on AMSAT's activities from AMSAT President Joe Spier, K6WAO, has been posted to the AMSAT website. https://www.amsat.org/apogeeview/ 73, Paul Stoetzer, N8HM Executive Vice President Radio Amateur Satellite Corporation (AMSAT)

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East Coast Roving Announcement 10-12 June
by Robert Bankston 07 Jun '18

07 Jun '18

Heading out from EM71 to FM16 Sunday, 10 June, activating grids EM73/EM74, EM84/EM94, EM95/FM05, and FM06 along the way, These will be single FM pass activations. Monday, 11 June, I will activate FM17, FM27, and FM26. I will be on multiple passes from each location, with a focus on FM birds and FO-29. Tuesday, 12 June, I will start off on the FM15/FM25 grid line, and then head back home through FM03/FM04, EM93/EM94, and EM83 with a single pass at each point. All QSOs will be uploaded to LOTW, upon my return. If you need a paper card, my QSL information is good on QRZ. Full schedule available at: https://twitter.com/KE4ALabama/status/1004730959105789952 You can follow me on my roving trip at http://aprs.fi/KE4AL-9 I will post updates on Twitter. My account is open to the public and can be viewed at https://twitter.com/KE4ALabama Thanks and 73,Robert | KE4AL

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EL58 trip starts today
by Clayton W5PFG 07 Jun '18

07 Jun '18

AC0RA and I are in Louisiana and are hoping to be on the air from EL58 after 2300 UTC today, possibly sooner. We should operate until about 2000 UTC Saturday. 73 Clayton W5PFG 73 Clayton W5PFG

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