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

EN71 May 21
by aa8ch＠aol.com 21 May '18

21 May '18

If the rain breaks I hope to activate EN71 this afternoon AO85 1900UTC, AO91 1935UTC, AO07 1952UTC. All QSOs will be uploaded to LOTW. Chris AA8CH

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Aug 2018 Trip to Santa Rosa Island CM93
by Ron Bondy 21 May '18

21 May '18

Hi Everyone, I am planning a trip to Santa Rosa Island CM93 this summer and have reservations booked for the ferry and the campground on the island. My wife and I will be flying to Seattle first to see our son in Vancouver, and doing some touring around Vancouver Island and then Olympia National Parkin Washington. I will activate grids as much as possible, but the grids below are the ones I think I am planning on at this time. After that we fly to Santa Barbara and will be on Santa Rosa Island CM93 Aug 20 / 21 / 22 (Mon, Tues, Wed). I will probably activate the CM93 / CM94 grid line from the island but at this point I don't know which passes will be from the grid line.I will focus on CM93 as my wife and I hike and do some bird watching. Apparently the island is very windy, so on Aug 20 and 21 I will also work some evening night passes when hopefully the winds will be quiet. I will activate on SO-50, AO-91 and AO-92. I'm just getting started on the linear birds and hope to be comfortable on FO-29 by Aug. Below are the dates and grids that I'm planning on at a minimum at this time. Note that I'm planning on a special side trip to CO50 the morning of Aug 13th if the road is decent. Patrick WD9EWK was there in 2010 and indicates it is a logging road not suitable for rental cars. I will probably have to decide this when I arrive in Port Hardy CO60. I'd love to activate CN69 but I don't see any easy way to do it given our other travel plans. I've broken activations down to morning and evening based on our current plans to drive between Seattle / Vancouver / Vancouver Island / Olympia National Park. We will fly from Seattle to Santa Barbara on Sat Aug 18th (all plane tickets are booked) and activate CM93 Aug 20/21/22. We arrive on the island at 3pm on the 20th and leave the island at 3pm on the 22nd. Morning EveningSun Aug 12 CO60Mon Aug 13 CO50 CN79Tue Aug 14 CN79 Wed Aug 15 CN87 Thur Aug 16 CN77,CN87 CN87 Mon Aug 20 CM93Tue Aug 21 CM93 CM93Wed Aug 22 CM93 Please email me at adodx at yahoo dot com if you have any questions or comments. Please note that the island does not have cell coverage so I won't be able to tweet specific pass information during my time on the island. If you are on the US east coast and are interested in working CM93 please send me an email 1 week prior to the trip when pass information is available and if we have a window on the FM birds or FO-29 I'll be glad to look for you specifically on a low easterly pass from Santa Rosa. I hope this email isn't too premature, but I've had a few people ask about the dates for CM93 so they can make sure they are home to get the credit for the grid. Looking forward to activating and handing out some new grids this summer. Cheers, Ron, AD0DX

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AO-91&92 Power Levels
by John Marranca, Jr 21 May '18

21 May '18

Greetings all...it's been a long time since I have been active on the satellites. While I was married, I had a good station and could work nearly any satellite I could hear. After being limited to the FM birds, I had very limited success with SO-50, etc. But the Fox satellites have been simply awesome. I am having the time of my life working 91&92 with my UV5RA and 19" whip antenna. But only during the day. Do these satellites have a lower power at night/during eclipse?? John KB2HSH On Sun, May 20, 2018, 12:24 AM <amsat-bb-request(a)amsat.org> wrote: > Send AMSAT-BB mailing list submissions to > amsat-bb(a)amsat.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.amsat.org/mailman/listinfo/amsat-bb > or, via email, send a message with subject or body 'help' to > amsat-bb-request(a)amsat.org > > You can reach the person managing the list at > amsat-bb-owner(a)amsat.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of AMSAT-BB digest..." > > > Today's Topics: > > 1. Recording TX & RX from one or two radios? (Bill Acito) > 2. Upcoming ARISS Contact Schedule as of 2018-05-19 06:00 UTC > (aj9n(a)aol.com) > 3. urgent help from AMSAT members worldwide (Tanan Rangseeprom) > 4. Re: Recording TX & RX from one or two radios? (Bill Acito) > 5. Re: AMSAT-BB Digest, Vol 13, Issue 168 (Todd W Deckard) > 6. Re: Recording TX & RX from one or two radios? (Greene, Stephan A) > 7. LongJiang 1 & 2 to be launched towards the Moon (Nico Janssen) > 8. DSLWP Lunar Amateur Radio Mission to be Launched This Sunday > (???) > 9. DSLWP Live CD Download Link Update (???) > 10. AO-92 L/v active... (Andrew Glasbrenner) > 11. Re: AO-92 L/v active... (Paul Stoetzer) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 18 May 2018 20:32:46 +0000 > From: Bill Acito <w1pa(a)hotmail.com> > To: "amsat-bb(a)amsat.org" <amsat-bb(a)amsat.org> > Subject: [amsat-bb] Recording TX & RX from one or two radios? > Message-ID: > < > FR1P152MB0405D5D5ABFEB1ACC31926FF98900(a)FR1P152MB0405.LAMP152.PROD.OUTLOOK.COM > > > > Content-Type: text/plain; charset="utf-8" > > [[I haven't done this yet but I think others have and I plan to do it one > day: most recorders are stereo. Get a *channel* splitter (I bought one on > Amazon) and send radio audio to left channel, say, and an external mic to > right.]] > > I have been doing this for years. The key/trick is that you have to insert > a 40db pad on the rig audio side because the audio levels (mic vs rig) are > very different. Most audio recorders use a AGC of some sort, and with no > balancing L to R, the AGC will adjust for the stronger rig audio, and lower > its overall sensitivity so you won't hear the mic channel. Inserting the > 40db pad balances the left and right and will give you good audio on both > sides. > > Bill W1PA > > > ------------------------------ > > Message: 2 > Date: Sat, 19 May 2018 02:10:58 -0400 > From: aj9n(a)aol.com > To: amsat-bb(a)AMSAT.Org > Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2018-05-19 > 06:00 UTC > Message-ID: <1637705c9e3-c90-801c(a)webjas-vae114.srv.aolmail.net> > Content-Type: text/plain; charset=utf-8 > > Upcoming ARISS Contact Schedule as of 2018-05-19 06:00 UTC > > > > Quick list of scheduled contacts and events: > > ? > > > > Viktor Rydberg Gymnasium, Stockholm, Sweden, telebridge via K6DUE > > The ISS callsign is presently scheduled to be NA1SS > > The scheduled astronaut is Scott Tingle KG5NZA > > Contact is a go for: Tue 2018-05-22 08:53:38 UTC 33 deg (***) > > ? > > Janusz Kusoci?ski Primary School No. 71, Pozna?, Poland, telebridge via > W6SRJ > > The ISS callsign is presently scheduled to be NA1SS > > The scheduled astronaut is Ricky Arnold KE5DAU > > Contact is a go for: Wed 2018-05-23 11:06:52 UTC 66 deg > > Watch for live stream at https://ariss.pzk.org.pl/live/?? > > ? > > > > > ****************************************************************************** > > 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 145.8? 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(a)sbcglobal.net > > **************************************************************************** > ARISS congratulations the following mentors who have now mentored over 100 > schools:? > > Francesco IK?WGF 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?2018-05-19 06:00 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 1228. ?? > Each school counts as 1?event. > Total number of ARISS ISS to earth school contacts is 1177. ? > 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:? DP?ISS, IR?ISS, NA1SS, OR4ISS,?RS?ISS > > > **************************************************************************** > The successful school list has been updated as of 2018-05-16 07:00 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. 54 on orbit > > Scott Tingle KG5NZA > > Norishige Kanai > > Anton Shkaplerov > > ? > > Exp. 55 on orbit > > Drew Feustel > > Oleg Artemyev > > Ricky Arnold KE5DAU > > **************************************************************************** > > 73, > Charlie?Sufana AJ9N > One of the ARISS operation team mentors > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > ? > > > > > > > ------------------------------ > > Message: 3 > Date: Sat, 19 May 2018 18:38:13 +0700 > From: Tanan Rangseeprom <nanrspm(a)gmail.com> > To: amsat-bb(a)amsat.org, Paul Stoetzer <n8hm(a)amsat.org>, Paul > Stoetzer > <prstoetzer(a)gmail.com> > Subject: [amsat-bb] urgent help from AMSAT members worldwide > Message-ID: > <CAMw-yOXvGQJ+UmQ2bSnModcNAtH86cFPicA= > W4x+pXfeF07wHg(a)mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Dear Paul Stoetzer, Executive Vice President of Radio Amateur Satellite > Corporation (AMSAT-NA) and member of AMSAT-BB > > The Radio Amateur Society of Thailand under patronage of His Majesty the > King (RAST) would like to thank you for the SatPC32 program along with the > Registration Code for the HS0AJ Ground Station. I and members of RAST along > with the team building the JAISAT-1 satellite used your program to control > the Rotor with a V/U antenna to work automatically in order to receive > signals from amateur radio satellites that passed over Thailand. We have > posted a video on YouTube of this, along with audio from an IC-9100 > transceiver, which you can view by using the link below or by searching > YouTube for the callsign HS0AJ. > > https://www.youtube.com/watch?v=ldjAA6e_Pjs > > We have made an application to the Thai regulator, the National > Broadcasting and Telecommunications Commission (NBTC) to set up ground > stations in different regions of Thailand in four locations, from North to > South and with the following callsigns: > > 1. GS station in the North of Thailand, using the callsign HS0AN > > 2. GS station in the South using the callsign HS0AS > > 3. GS Station in the Northeast of Thailand using the callsign HS0AO > > 4. GS station in the Central region of Thailand with the callsign HS0AL > > We intend to post videos from all of these stations on YouTube, similar to > those from HS0AJ, and we will establish ground stations all over the > country in order to receive signals from satellites and to enable amateur > radio operators and others in Thailand who are interested to access videos > from these stations on YouTube. > > However, now we are seeking urgent help from AMSAT members worldwide > because we are unable to contact the company Innovative Solutions In Space > (ISIS) with which RAST had signed a contract to buy components for a > U-class CubeSat but excluding the payload, being the Linear Transponder. > Since the beginning of this year up until now we have been unable to > contact ISIS, which is the reason for this appeal to you for urgent help in > the purchase of components for the Flight Model of the 1U CubeSat satellite > which is capable of carrying a payload of a Linear Transponder for RAST and > which has been assembled and has passed the testing phase. > > Can anyone please provide some recommendations to us regarding the assembly > of the satellite ? and as quickly as possible? RAST and its members are > lacking experience in satellite assembly and for the initial testing phase > and we are appealing for suggestions as to where we can find suppliers of > CubeSat components and as to who can test them and send the satellite out > into space? > > For your consideration, please find some YouTube links about testing and > building a Linear Transponder below: > > Thermal vacuum test > > https://www.youtube.com/watch?v=q8gebXAaj6M > > Vibration Test > > https://www.youtube.com/watch?v=6e02iOwZdM8 > > Design PCB > > https://www.youtube.com/watch?v=z61l6r1AtQo > > https://www.youtube.com/watch?v=lBwMD5y3nns > > https://www.youtube.com/watch?v=bSb86DushF8 > > https://www.youtube.com/watch?v=1fXePZ-L86M > > 3D of JAISAT-1 Satellites > > https://www.youtube.com/watch?v=TNqO_3Q9vxo > > JITTER OF LOCAL OSCILLATOR 190MHz and 390MHz > > https://www.youtube.com/watch?v=IrSpHzPD-Y8 > > > > Sincerely and with respect, > > Tanan Rangseeprom > > > ------------------------------ > > Message: 4 > Date: Fri, 18 May 2018 20:39:08 +0000 > From: Bill Acito <w1pa(a)hotmail.com> > To: "amsat-bb(a)amsat.org" <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] Recording TX & RX from one or two radios? > Message-ID: > < > FR1P152MB040554B0BCE53D859BF58B8398900(a)FR1P152MB0405.LAMP152.PROD.OUTLOOK.COM > > > > Content-Type: text/plain; charset="utf-8" > > > https://www.ebay.com/itm/Hosa-Stereo-1-8-3-5-mm-Male-to-Dual-Mono-1-8-Femal… > > You will likely have to build your own 40db pad ---? its two resisters. > > Bill > > > > ------------------------------ > > Message: 5 > Date: Sat, 19 May 2018 07:03:59 -0500 > From: Todd W Deckard <twdeckard(a)earthlink.net> > To: amsat-bb(a)amsat.org > Subject: Re: [amsat-bb] AMSAT-BB Digest, Vol 13, Issue 168 > Message-ID: <CF4FBC12-C73A-4A69-BFF8-5B21CAFDB4AD(a)earthlink.net> > Content-Type: text/plain; charset=utf-8 > > mailing list bounced my pedantic response due to attached image size ... > > here?s a link to a parallel thread that has the image of ISS altitude over > time. > > > http://forums.qrz.com/index.php?threads/need-help-with-ascending-node.54930… > > > > Sent from my iPhone > > > On May 19, 2018, at 6:43 AM, Todd W Deckard <twdeckard(a)earthlink.net> > wrote: > > > > As an aside, the ISS makes an adjustment approximately once a month. > They operate at a higher altitude now that the shuttle is no longer used > for resupply. Here is a plot from heavens-above. > > > > <image1.png> > > > > > > I have observed that if you are using an Arduino or another processor > with single precision math, the computed results age very quickly for any > LEO and practically I must update every few days. > > > > if you are using a more respectable math engine and are only concerned > about the orbital elements; the error in the satellite position is > approximately a kilometer at the epoch of the TLE. Then the simplified > perturbation model (SPG4) used by the common software we use loses about > 1-2km a day. > > > > all of this is a bit pedantic if you are hand pointing an antenna in the > noble tradition ... > > > > best > > Todd > > Sent from my iPhone > > > >> On May 18, 2018, at 9:51 PM, amsat-bb-request(a)amsat.org wrote: > >> > >> Send AMSAT-BB mailing list submissions to > >> amsat-bb(a)amsat.org > >> > >> To subscribe or unsubscribe via the World Wide Web, visit > >> http://www.amsat.org/mailman/listinfo/amsat-bb > >> or, via email, send a message with subject or body 'help' to > >> amsat-bb-request(a)amsat.org > >> > >> You can reach the person managing the list at > >> amsat-bb-owner(a)amsat.org > >> > >> When replying, please edit your Subject line so it is more specific > >> than "Re: Contents of AMSAT-BB digest..." > >> Today's Topics: > >> > >> 1. Re: when are TLE's too old to use? (Gregory Beat) > >> 2. Re: Recording TX & RX from one or two radios? (Mark D. Johns) > >> 3. Re: when are TLE's too old to use? (skristof(a)etczone.com) > >> 4. FUNcube-1 mode change (Jim Heck) > >> 5. Falconsat With Wisp and Kenwood TS-200 Internal TNC > >> (Vincenzo Mone) > >> 6. Falconsat With Wisp and Kenwood TS-200 Internal TNC > >> (Vincenzo Mone) > >> 7. Falconsat With Wisp and Kenwood TS-200 Internal TNC > >> (Vincenzo Mone) > >> 8. Re: Recording TX & RX from one or two radios? > >> (skristof(a)etczone.com) > >> 9. Re: Recording TX & RX from one or two radios? (Ken M) > >> 10. Re: Recording TX & RX from one or two radios? (John Brier) > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> <mime-attachment> > >> _______________________________________________ > >> Sent via amsat-bb(a)amsat.org. > >> 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 > > > ------------------------------ > > Message: 6 > Date: Sat, 19 May 2018 14:32:09 +0000 > From: "Greene, Stephan A" <stephan.a.greene(a)vencore.com> > To: John Brier <johnbrier(a)gmail.com>, Steve Kristoff > <skristof(a)etczone.com> > Cc: AMSAT BB <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] Recording TX & RX from one or two radios? > Message-ID: > > <905C3C6D2F7CC24386DD63AD6DE8D841EEFD29DF(a)DC7SWEXP002.corp.adroot.internal > > > > Content-Type: text/plain; charset="us-ascii" > > I think you want a "DJ splitter" cable. Typically a stereo (TRS) plug > and two separate MONO output jacks, one for the left and one for the > right channel. DJ's use one to monitor a track they are playing on one > channel while cueing up a 2nd track in their headphones; the DJ software > is configured to output to one track or the other. Use when you have a > laptop or tablet with one audio output and don't want to or can't use a > mixer or 2nd (USB?) audio device. Usually well-made because DJs hate > equipment failures mid-gig. (and we hams hate equipment failures in > mid-pass!) I have a Griffin DJ Cable and will have to test this myself. > Native Instruments (Traktor) and other DJ equipment vendors sell these. > $10-$12 give or take. > > The use in this thread is to combine 2 signals into one input jack, > while keeping them on separate tracks. Play the recording back in > software like Audacity as suggested by others. > > I agree the easiest approach is wire a cheap electret mic for local > (Uplink) audio. If you tap audio from your uplink radio mic input, you > may need to pad down the audio level to the recorder and take steps to > isolate the recording line from the radio input. > > The other "splitter" cable described connects left and right channels in > parallel and is intended . Usually called a headphone audio splitter. > You may get a mess unless you wire the plugs from your downlink and > local audio to put signals on just one channel. More trouble than it > is worth IMO. YMMV. > > 73 Steve KS1G > > -----Original Message----- > From: John Brier [mailto:[email protected]] > Sent: Friday, May 18, 2018 10:52 PM > To: Steve Kristoff > Cc: AMSAT BB > Subject: Re: [amsat-bb] Recording TX & RX from one or two radios? > > Probably because I used the wrong term. It is a breakout cable. Here is > what I have. Haven't used it yet, but it should work. > > <url removed for berevity> > > 73, John Brier KG4AKV > > > > > > ------------------------------ > > Message: 7 > Date: Sat, 19 May 2018 17:25:11 +0200 > From: Nico Janssen <hamsat(a)xs4all.nl> > To: AMSAT <amsat-bb(a)amsat.org> > Subject: [amsat-bb] LongJiang 1 & 2 to be launched towards the Moon > Message-ID: <7385fa9f-4792-b2b7-4407-fc67e77df7ab(a)xs4all.nl> > Content-Type: text/plain; charset=utf-8; format=flowed > > All, > > The two Chinese microsats LongJiang 1 & 2 are to be launched > towards the Moon from Xichang on 2018-05-20 around 21:00 UTC. > They carry radio amateur payloads with 2 m uplinks and 70 cm > downlinks. Amateurs will be able to receive telemetry downlinks > but will also be allowed to send telecommands for taking and > downlinking pictures. There are also plans to enable FreeDV digital > voice communications through these spacecraft. > > The two LongJiang satellites are planned to perform formation > flying in a high elliptical orbit around the Moon (300 x 9000 km). > After launch it will take about 4 and a half days to reach the Moon. > This GMAT script should work well for the first days after launch: > https://hamsat1.home.xs4all.nl/LongJiang_NYC.script > The groundstation used in this script is a random location in New > York City. You can change this to your location by updating the > values under the GroundStation tab in GMAT. > > 73, > Nico PA0DLO > > > > > ------------------------------ > > Message: 8 > Date: Sun, 20 May 2018 02:01:24 +0800 (CST) > From: ??? <wmc_jx(a)163.com> > To: "amsat-bb(a)amsat.org" <amsat-bb(a)amsat.org> > Subject: [amsat-bb] DSLWP Lunar Amateur Radio Mission to be Launched > This Sunday > Message-ID: <287a0b20.349.163799035a7.Coremail.wmc_jx(a)163.com> > Content-Type: text/plain; charset=GBK > > Dear OMs, > > > > DSLWP is a lunar formation flying mission led by Harbin Institute of > Technology for low frequency radio astronomy, amateur radio and education. > It consists of a pair of 47 kg microsatellites, to be launched into a lunar > transfer orbit UTC this Sunday evening, and finally enter a 300 x 9000km > lunar elliptical orbit. Onboard each satellite, there are two VHF/UHF SDR > transceivers to provide beacon, telemetry, telecommand, digital image > downlink and a GMSK-JT4 repeater. Onboard transmitting power is about 2 W. > > > > The first launch window will open at about 21:30 May 20th UTC. The > transmitters will be activated soon after separation. Satellite A will > transmit 500 baud GMSK with 1/4 turbo code on 435.425 MHz and 250 baud GMSK > with 1/2 turbo code and precoder on 436.425 MHz, and satellite B will > transmit 500 baud GMSK with 1/4 turbo code on 435.400 MHz and 250 baud GMSK > with 1/2 turbo code and precoder on 436.400 MHz, in every 5 minutes by > default. Each transmittion will last about 16 seconds. Radio amateurs in > South America will have the earliest chance to receive the signals from the > satellites, then North America, Oceania, Asia, Europe and Africa. > > > > Harbin Institute of Technology Amateur Radio Club expects radio amateurs > to join in this mission. We will prepare different QSL cards for different > flight phase for amateurs successfully made QSO or received telemetry. > Awards will also be given to the first 10 amateurs in each continent who > successfully decoded the signals from the satellites, received the most > number of packets, or received an image. Your participation will also help > the team to get a better knowledge of the status of the satellites. > > > > An open source decoding software based on GNU Radio to work with RTL-SDR > and USRP is provided. Not difficult to change the grc files to support > other SDR receivers. A small proxy software will send the decoded data to a > server for real-time display. > > > > Thank you very much and fingers crossed for a successful launch! > > > > Best Regards, > > > > Wei Mingchuan BG2BHC > > > > Links: > > IARU frequency coordination page: > http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=530 > > Link budgets: http://lilacsat.hit.edu.cn/wp/?page_id=676 > > Decoder (GNU Radio OOT module): https://github.com/bg2bhc/gr-dslwp > > Decoder (Linux Live CD): https://1drv.ms/u/s!Av6J6WjI3UbMhHm8gwMr4Z_keqWH > > TLE: http://lilacsat.hit.edu.cn/tle/dslwp.txt > > DSLWP-A Telemetry Display: > http://lilacsat.hit.edu.cn/dashboard/pages_en/telemetry-a.html > > DSLWP-B Telemetry Display: > http://lilacsat.hit.edu.cn/dashboard/pages_en/telemetry-b.html > > > > > -- > > WEI Mingchuan > > > Research Center of Satellite Technology > Harbin Institute of Technology > mobile: +86-189-4501-5242 > e-mail: wmc_jx(a)163.com; bg2bhc(a)gmail.com > > ------------------------------ > > Message: 9 > Date: Sun, 20 May 2018 08:31:49 +0800 (CST) > From: ??? <wmc_jx(a)163.com> > To: "amsat-bb(a)amsat.org" <amsat-bb(a)amsat.org> > Subject: [amsat-bb] DSLWP Live CD Download Link Update > Message-ID: <7dea7110.12b3.1637af5a825.Coremail.wmc_jx(a)163.com> > Content-Type: text/plain; charset=GBK > > Hi OMs, > > > If the One Drive link for DSLWP does not work, please have a try with > this: > https://drive.google.com/file/d/16YQ3XvQ9hLp6ckpwFj4OkxO2ONzJ8ZSw/view?usp=… > > > 73! > > > Wei BG2BHC > > > > > -- > > WEI Mingchuan > > > Research Center of Satellite Technology > Harbin Institute of Technology > mobile: +86-189-4501-5242 > e-mail: wmc_jx(a)163.com; bg2bhc(a)gmail.com > > ------------------------------ > > Message: 10 > Date: Sat, 19 May 2018 22:43:39 -0400 > From: Andrew Glasbrenner <glasbrenner(a)mindspring.com> > To: amsat-bb(a)amsat.org > Subject: [amsat-bb] AO-92 L/v active... > Message-ID: <A8AE8B1B-C33F-47E9-A08C-F9C6A8ED42CB(a)mindspring.com> > Content-Type: text/plain; charset=us-ascii > > Commanded on at 0235Z 20MAY and will remain active for ~24 hours. Enjoy! > > 73, Drew KO4MA > > > ------------------------------ > > Message: 11 > Date: Sun, 20 May 2018 00:21:01 -0400 > From: Paul Stoetzer <n8hm(a)arrl.net> > To: Andrew Glasbrenner <glasbrenner(a)mindspring.com> > Cc: amsat-bb(a)amsat.org > Subject: Re: [amsat-bb] AO-92 L/v active... > Message-ID: > <CABzOSOpwCDUB7hjkxX= > Me+vAnCuh-x93sPXdaXRTiy+b6_FEKQ(a)mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > If anyone at Hamvention wants to see portable L-band ops, stop by the demo > area outside Building 1 for an 87 degree pass of AO-92 at 11:36am tomorrow. > > 73, > > Paul, N8HM > > On Sat, May 19, 2018 at 22:43 Andrew Glasbrenner < > glasbrenner(a)mindspring.com> > wrote: > > > Commanded on at 0235Z 20MAY and will remain active for ~24 hours. Enjoy! > > > > 73, Drew KO4MA > > _______________________________________________ > > Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. > 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 169 > ***************************************** >

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Re: [amsat-bb] Question about PSAT
by Robert Bruninga 21 May '18

21 May '18

> > > Seems like the PSAT telemetry 00011100 means the Digipeater is off. > Yes, I just checked on the downlink page: http://www1.findu.com/cgi-bin/pcsat.cgi and you can see that the telemetry serial number is only getting up to around 45 or so before it resets. So apparently it is not in good sun position and is resetting at each eclipse. Bob, WB4APR

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Satellite Lab Job opening
by Robert Bruninga 21 May '18

21 May '18

The engineer/technician job at the Naval Academy small satelilte lab is open. We build cubesats and develop good labs for the students. A ham with satellite experience would be an excellent match. Bob, WB4APR

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Advanced notice of Nayif1 Data Warehouse Outage
by David Johnson 21 May '18

21 May '18

Hi, I am planning to move the web application and database to a new server in the next few days. I will provide timings later, but as always, the Dashboards will pick up again once hey detect the warehouse connection has resumed. 73 Dave, G4DPZ

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AlfaSpid help
by John Fickes 21 May '18

21 May '18

I want to thank everyone for their help. I did finally figure it out and to make a long story short it is a allen head screw. I got a inspection L.E.D light down in the hole so I could see better and my allen wrench barely reached it but I did get it out. So I'm on the way now. Thank You ALL John W0JW 73

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help with WRAPS (XBee version)
by Ron VE8RT 20 May '18

20 May '18

It might be in the documentation on the CD, being so close to having my WRAPS working I'd rather not mess anything up at this point. The mechanical construction is done, although I have the box turned on edge so the PC board will mount sideways, I can work with that. The elevation and azimuth motions are centered up and move quietly and freely (about 22mA each motor operating continuously with no load at 9V). The XBee modules files have been uploaded, but I haven't taken mounted one on the WRAPS board yet, as I haven't done any further configuration to the modules. Are there changes that need to be made to the XBee module files before installing them on the WRAPS board? Are there things I should check or look for before final assembly and testing? Thanks Ron VE8RT -- Ron VE8RT <ve8rt(a)yknwt.ca>

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FUNcube-1 mode change
by Graham Shirville 20 May '18

20 May '18

Hi All, FUNcube-1 is now operating in autonomous mode until Friday evening (UTC). The transponder will be on in eclipse and switch to high power telemetry only when in sunlight. 73 Graham G3VZV

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fox telem server down?
by Kevin Schuchmann 20 May '18

20 May '18

Data is backing up in the queue, server down? Kevin WA7FWF

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