July 2024 - AMSAT-BB - mailman.amsat.org

Re: SO-50 Key to Longivity?
by Paul Stoetzer 22 Jul '24

22 Jul '24

1. It's a microsat size satellite, so significantly larger than current cubesat form factors. 2. It's transmit power is just 250 mW and it transmits only while it receives a signal with a 67 Hz PL tone - there's no constant carrier or any telemetry transmissions. I'm not aware of any other payloads or signals coming from the satellite. Potentially there's not even any onboard computer drawing power. 3. Given its size, it has fairly large solar cells and likely has fairly large battery cells and given its transmit setup, the depth of discharge is likely quite low. NiCd batteries can last a real long time when the depth of discharge is kept quite low. 73, Paul, N8HM On Mon, Jul 22, 2024 at 12:05 PM JOHN GEIGER via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > > SO-50 will be 22 years old in December and seems to be still be going > strong, in sunlight and in eclipse. No other satellite launched since then > has lived near that long. So what is SO-50s key to long life? Is it how > the satellite was built? Something in its operation, like lower power on > transmit? Its orbital setup? > > Any ideas why it has lived so much longer than the recent crop of AMSATS? > > 73 John AF5CC > > Sent using Zoho Mail > > > > ----------------------------------------------------------- > > 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. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

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Re: SO-50 Key to Longivity?
by JOHN GEIGER 22 Jul '24

22 Jul '24

Unfortunately I don't know much about IO-117 so that is a question I can't answer. 73 John AF5CC Sent using {0} ---- On Mon, 22 Jul 2024 11:31:20 -0500 <crohtun(a)aim.com> wrote --- And what have we learned from IO-117 about radiation resistance, etc? Ray Crafton KN2K https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661 On Monday, July 22, 2024, 12:02 PM, JOHN GEIGER via AMSAT-BB <mailto:amsat-bb@amsat.org> wrote: SO-50 will be 22 years old in December and seems to be still be going strong, in sunlight and in eclipse. No other satellite launched since then has lived near that long. So what is SO-50s key to long life? Is it how the satellite was built? Something in its operation, like lower power on transmit? Its orbital setup? Any ideas why it has lived so much longer than the recent crop of AMSATS? 73 John AF5CC Sent using ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org

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Re: SO-50 Key to Longivity?
by JOHN GEIGER 22 Jul '24

22 Jul '24

That is an interesting idea and something I was wondering about, although I don't think that SO41 had a long lifespan, so it might have been built to different standards. 73 John AF5CC Sent using {0} ---- On Mon, 22 Jul 2024 11:35:14 -0500 Ignacio Granados Vega <ti3ies(a)gmail.com> wrote --- https://space.skyrocket.de/doc_sdat/saudisat-1.htm Maybe they put a little more research and money into the development and construction, I think that was reflected in a different quality in their circuits, which has caused their life to be prolonged. 73 TI3IES El lun, 22 jul 2024 a las 10:01, JOHN GEIGER via AMSAT-BB (<mailto:amsat-bb@amsat.org>) escribió: SO-50 will be 22 years old in December and seems to be still be going strong, in sunlight and in eclipse. No other satellite launched since then has lived near that long. So what is SO-50s key to long life? Is it how the satellite was built? Something in its operation, like lower power on transmit? Its orbital setup? Any ideas why it has lived so much longer than the recent crop of AMSATS? 73 John AF5CC Sent using ----------------------------------------------------------- Sent via AMSAT-BB(a)http://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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)http://amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org -- ========================================== Ignacio Granados Vega - TI3IES Cartago, Costa Rica ========================================== Cuidemos el medio ambiente. Por favor no imprima este correo si no es necesario.

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SO-50 Key to Longivity?
by JOHN GEIGER 22 Jul '24

22 Jul '24

SO-50 will be 22 years old in December and seems to be still be going strong, in sunlight and in eclipse. No other satellite launched since then has lived near that long. So what is SO-50s key to long life? Is it how the satellite was built? Something in its operation, like lower power on transmit? Its orbital setup? Any ideas why it has lived so much longer than the recent crop of AMSATS? 73 John AF5CC Sent using {0}

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ANS-203 AMSAT News Service Weekly Bulletins
by Paul Stoetzer 21 Jul '24

21 Jul '24

*AMSAT News Service* *ANS-203* *July 18, 2024* In this edition: - AMSAT Board of Directors Election Underway - AMSAT Mail Alias Service to End August 31, 2024 - Tevel Satellites Nearing Re-Entry - AMSAT-OSCAR 7 in Continuous Sunlight - Changes to AMSAT TLE Distribution for July 19, 2024 - ARISS News - Upcoming Satellite Operations - AMSAT Ambassador Activities - Satellite Shorts From All Over The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, 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 https://www.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.org You can sign up for free e-mail delivery of the AMSAT News Service Bulletins via the ANS List; to join this list see: https://mailman.amsat.org/postorius/lists/ans.amsat.org/ ------------------------------ Save the Date! Symposium 2024 Photo by Robert DuBois Mark your calendar now for the 2024 AMSAT Symposium, *October 25-27, 2024 *at the Doubletree by Hilton Tampa Rocky Point Waterfront in Tampa, Florida! Watch for announcements concerning further details as plans are formulated. ------------------------------ AMSAT Board of Directors Election Underway The nomination period for the 2024 AMSAT Board of Directors Election ended on June 15th. The following candidates have been duly nominated: - Mark Hammond, N8MH - Frank Karnauskas, N1UW - Bruce Paige, KK5DO - Paul Stoetzer, N8HM - Douglas Tabor, N6UA As three seats on the Board of Directors are up for election this year, the three candidates receiving the largest number of votes shall be declared elected to the seats. The two candidates receiving the next largest number of votes shall be declared First Alternate and Second Alternate, respectively. The voting process is now underway. AMSAT members can find candidate statements and electronic voting information on AMSAT's Wild Apricot Membership Portal <https://launch.amsat.org/2024-BoD-Election>. The voting period will conclude on September 15th and results will be announced no later than September 30th. *[ANS thanks Jeff Davis, KE9V, AMSAT Secretary for the above information]* ------------------------------ AMSAT Mail Alias Service to End August 31, 2024 A long-standing member service, the AMSAT Mail Alias Service is scheduled to end on August 31, 2024. A mail alias on AMSAT.ORG permitted people to send an email to members without knowing their actual internet email address. They just needed to know their amateur radio callsign. Unfortunately, the unchecked rise in domain name hacking and email account high-jacking has made it impossible to sustain this service at a cost-effective level. The number of callsign(a)amsat.org email accounts that had been hijacked and converted to zombie spam accounts over the years had led many internet service providers and gateway centers to ban all @ amsat.org email addresses, including those business accounts of AMSAT officers and officials. The tireless efforts of AMSAT’s all volunteer IT staff has worked for years to repair much of the damage, but AMSAT still get complaints from members who are not getting their personal emails, ANS bulletins or AMSAT-BB posts because of persistent delivery problems. It has come to the point where the AMSAT volunteer IT staff can no longer keep up with the maintenance requirements to keep the alias mail list clean and to work with email gateways to remove blocks. And, after considerable investigation into alternative paid email services, AMSAT leadership decided that the money required to keep an email alias system alive would be better spent on building and flying satellites for its members. Persons using the Mail Alias Service should begin to migrate to different email accounts so they do not lose receipt of personal emails, AMSAT News Service Weekly Bulletins, AMSAT-BB posts, or official messages from AMSAT itself. Members are especially asked to make sure they are NOT using a callsign(a)amsat.org as their registered email address in the AMSAT membership portal. Members can easily change their registered member email address by logging into the portal and updating their profile. *[ANS thanks AMSAT for the above information]* ------------------------------ Tevel Satellites Nearing Re-Entry The Tevel series of satellites is approaching re-entry, with Tevel-5 already re-entering on July 18th. The Tevel mission consists of 8 satellites developed by the Herzliya Science Center in Israel, each carrying an FM transponder. The satellites were built by 8 schools in different parts of Israel and launched in January 2022 on the SpaceX Falcon 9 Transporter-3 mission. A number of other satellites with amateur radio payloads are also re-entering shortly. A list of satellites approaching re-entry can be found at http://lu7aa.org/decay.asp *[ANS thanks Herzliya Science Center, AMSAT Argentina, and LU7AA for the above information]* ------------------------------ *The 2024 Coins Are Here Now!Help Support GOLF and Fox Plus.**Join <https://www.amsat.org/join-the-amsat-presidents-club/> the AMSAT President’s Club today!* ------------------------------ AMSAT-OSCAR 7 in Continuous Sunlight AMSAT-OSCAR 7, soon to celebrate its 50th birthday on November 15, 2024, is now in a period of continuous sunlight through May 22, 2027. While in continuous sunlight, the satellite's internal timer is expected to switch between the two transponders - Mode A (29 MHz downlink and 145 MHz uplink) and Mode B (145 MHz downlink and 29 MHz uplink) every 24 hours. Post reports and check current status on the AMSAT Live OSCAR Satellite Status Page <https://www.amsat.org/status/>. After a few days in continuous sunlight, it should be possible to determine the actual or approximate time the satellite switches. *[ANS thanks AMSAT and EA1PA for the above information]* ------------------------------ Changes to AMSAT TLE Distribution for July 19, 2024 Two Line Elements or TLEs, often referred to as Keplerian elements or keps in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly updates are completely adequate for most amateur satellites. TLE bulletin files are updated Thursday evenings around 2300 UTC, or more frequently if new high interest satellites are launched. More information may be found at https://www.amsat.org/keplerian-elements-resources/ The following satellites have been removed from this week's AMSAT TLE distribution: MESAT1 remains on this distribution. No signals have been detected from any other amateur spacecraft launched as part of NASA's ELaNa 43 mission. ELaNa 43 OBJECT A NORAD Cat ID 60203 No amateur signal detected ELaNa 43 OBJECT B NORAD Cat ID 60204 No amateur signal detected ELaNa 43 OBJECT C NORAD Cat ID 60205 No amateur signal detected ELaNa 43 OBJECT D NORAD Cat ID 60206 No amateur signal detected ELaNa 43 OBJECT E NORAD Cat ID 60207 No amateur signal detected ELaNa 43 OBJECT F NORAD Cat ID 60208 No amateur signal detected ELaNa 43 OBJECT H NORAD Cat ID 60210 No amateur signal detected Zhou Enlai NORAD Cat ID 43156 Decayed from orbit on or about 17 July 2024 TEVEL-5 NORAD Cat ID 50998 Decayed from orbit on or about 18 July 2024 The following satellites have been added to this week's AMSAT TLE distribution: GRBBeta NORAD Cat ID 60236 IARU coordinated downlinks on 145.935 MHz, 436.785 MHz and 2405.000 MHz ROBUSTA-3A NORAD Cat ID 60241 IARU coordinated 9k6 GMSK with AX.25 downlink on 436.750 MHz Thanks to Nico PA0DLO for identifying the two new spacecraft. *[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements Manager, for the above information]* ------------------------------ *Need new satellite antennas? Purchase an M2 LEO-Pack from the **AMSAT Store! <https://amsat.org/product-category/hardware/>**When you purchase through **AMSAT, a portion of the proceeds goes towards **Keeping Amateur Radio in Space.* ------------------------------ ARISS News Amateurs and others around the world may listen in on contacts between amateurs operating in schools and allowing students to interact with astronauts and cosmonauts aboard the International Space Station. The downlink frequency on which to listen is 145.800 MHz worldwide. *Aznakaevsky district schools of the Republic of Tatarstan, Tatarstan Russia, direct via TBD* The ISS callsign is presently scheduled to be RSØISS The scheduled crewmember is Aleksandr Grebyonkin RZ3DSE The ARISS mentor is RV3DR Contact is go for Sat 2024-07-27 13:45 UTC *Arizona Science Center, Phoenix, AZ, telebridge via AB1OC* The ISS callsign is presently scheduled to be NA1SS The scheduled crewmember is Matthew Dominick KCØTOR The ARISS mentor is K4RGK Contact is go: Sat 2024-07-27 18:24:08 UTC 41 deg As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol. The crossband repeater continues to be active (145.990 MHz up {PL 67} & 437.800 MHz down), If any crewmember is so inclined, all they have to do is pick up the microphone, raise the volume up, and talk on the crossband repeater. So give a listen, you just never 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. The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The latest list of frequencies in use can be found at https://www.ariss.org/contact-the-iss.html *[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors for the above information]* ------------------------------ Upcoming Satellite Operations A growing number of satellite rovers are currently engaged in sharing their grid square activations on https://hams.at. By visiting the website, you gain easy access to comprehensive information about the operators responsible for activating specific grid squares. Additionally, you have the ability to assess the match score between yourself and a particular rover for a given pass, while also being able to identify the upcoming satellite passes that are accessible from your location. *N8MR* will be in *EN57*, with roves to EN67 from Aug 2 thru Aug 10. Icom 9700, Arrow and Alaskan (IO-117) antennas. Listening for Europe on linear eastern passes, at least two of these on CW. Can operate CW for NA ops, if anyone wants it. I can rove to EN56, only if needed. Posting passes to http://hams.at <https://t.co/VDIY566ji4> a day in advance. All QSOs to LoTW as N8MR. *[ANS thanks Ian Parsons, K5ZM, AMSAT Rover Page Manager, for the above information]* ------------------------------ * Want to fly the colors on your own grid expedition?* Get an AMSAT car flag and other neat stuff from our Zazzle store <https://www.zazzle.com/store/amsat_gear>! 25% of the purchase price of each product goes towards Keeping Amateur Radio in Space ------------------------------ AMSAT Ambassador Activities AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events. AMSAT Ambassador Clint Bradford, K6LCS, says, "Think a 75-minute presentation on "working the easy satellites" would be appropriate for your club or event? Let me know by emailing me at k6lcsclint (at) gmail (dot) com or calling me at 909-999-SATS (7287)!" Clint has NEVER given the exact same show twice: EACH of the 150+ presentations so far has been customized/tailored to their audiences. Scheduled Events *2024 KARS / ARRL Idaho State Convention* *August 3, 2024* Post Falls, ID K7SYS *Huntsville Hamfest**August 17-18, 2024* Huntsville, AL AMSAT Booth and Forum N8DEU and W4FCL *Northeast HamXpostion**August 22-25, 2024* Best Western Royal Plaza Hotel & Trade Center 181 Boston Post Road W Marlborough, MA 01752 *Greater Louisville Hamfest**September 7, 2024* Shepherdsville, KY AMSAT Forum and Information Table W4FCL *Central Kentucky Hamfest**October 5, 2024* Lexington, KY AMSAT and Educational Satellites Forum and Information Table AI4SR and W4FCL *North Star Radio Convention**October 5, 2024* Hennepin Technical College (North Campus) Brooklyn Park, Minn. AMSAT Forum and Information Table KØJM and ADØHJ *2024 AMSAT Space Symposium and Annual General Meeting**October 25-27, 2024* Doubletree by Hilton Tampa Rocky Point Waterfront 3050 N Rocky Point Dr W Tampa, FL 33607 *Stone Mountain Hamfest, ARRL State Convention* *November 2-3, 2024* Stone Mountain, GA K4RGK *[ANS thanks Bo Lowrey, W4FCL, Director – AMSAT Ambassador Program, for the above information]* ------------------------------ Satellite Shorts from All Over + XW-2B has recently returned to reliable service. XW-2B has an inverting linear transponder with an uplink of 435.090-435.110 MHz and a downlink of 145.730-145.750 MHz. + The May/June 2024 issue of *The **AMSAT** Journal* is now available to members on AMSAT’s Member Portal at https://launch.amsat.org/The_AMSAT_Journal + SpaceX's Falcon 9 suffered a rare failure on July 11th when the upper stage “experienced an anomaly and was unable to complete its second burn," trapping 20 Starlink satellites in an unusably low orbit. More information at https://spacenews.com/starlink-satellites-lost-on-falcon-9-upper-stage-fail… (ANS thanks SpaceNews for the information) ------------------------------ Join AMSAT today at https://launch.amsat.org/ In addition to regular membership, AMSAT offers membership to: - Societies (a recognized group, clubs or organization). - 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 6 post-secondary years in this status. - Memberships are available for annual and lifetime terms. Contact info [at] amsat.org for additional membership information. *73 and remember to help Keep Amateur Radio in Space!* *This week's ANS Editor,* *Paul Stoetzer, N8HM* *n8hm [at] amsat.org <http://amsat.org>* *ANS is a service of AMSAT, the Radio Amateur Satellite Corporation, 712 H Street NE, Suite 1653, Washington, DC 20002*

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Re: TEVEL-5 and TEVEL-6 off the list
by David Spoelstra 20 Jul '24

20 Jul '24

Sorry to hear that. They were great birds. I made hundreds of contacts on them. -David On Fri, Jul 19, 2024, 2:30 PM david.greenberg--- via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > Hello All, > > It looks like TEVEL-5 and 6 were removed from the Keplerian elements > lists. I guess that this means a re-entry. > > > > 73, > > > > David 4X1DG > > > > ----------------------------------------------------------- > > 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. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

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Demo passes for "Moon Day" at the Frontiers of Flight Museum, Dallas Texas
by Thomas Schuessler 20 Jul '24

20 Jul '24

Hi all, Below are some passes for Saturday July 20, 2024 that we will try to work as part of the "Moon Day" public STEM event at the Frontiers of Flight Museum in Dallas Texas. Please look out for myself, N5HYP, or Virginia Smith, NVF and give us a call. Hopefully we will have some museum visitors in tow to show them how this Amateur Radio satellite thing works. Sorry but the times are in Central DST, USA time, not UTC. This is the chart I will be posting so did not want to confuse folks not used to UTC. AOS - LOS DURAO-91 11:28 11:37 13 216 - 321 Tevel-7 11:32 11:37 06 053 -139 SO-121 12:27 12:36 69 008 –197 Tevel-7 13:01 13:07 19 351- 218 SO-50 14:21 14:33 75 203 - 031 See you on the Birds tomorrow morning.73Tom, N5HYP

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Re: UVSQ-transponder question
by Thomas Schuessler 20 Jul '24

20 Jul '24

Lilacsat-2 is so random. The DF2ET page showed it to be timed as active a week ago Saturday but it was not. Tom, N5HYP On Wednesday, July 17, 2024 at 11:58:28 AM CDT, JOHN GEIGER via AMSAT-BB <amsat-bb(a)amsat.org> wrote: Thanks for the information and the DF2ET is a useful webpage. I didn't know that Lilacsat-2 had a timer on it, but it doesn't look like it has been active for a while either according to the AMSAT Active page. 73 John AF5CC Sent using Zoho Mail ---- On Wed, 17 Jul 2024 11:54:03 -0500 Ignacio Granados Vega via AMSAT-BB <amsat-bb(a)amsat.org> wrote --- Hello John. You can have updates here. https://twitter.com/uvsqsat https://www.df2et.de/tevel/ 73 -TI3IES El mié, 17 jul 2024 a las 10:38, JOHN GEIGER via AMSAT-BB (<amsat-bb(a)amsat.org>) escribió: Is the FM transponder ever turned on on UVSQ any longer, and if it is, how can I find the schedule? They used to post activations on this list but I haven't seen any emails about it for some time. 73 John AF5CC Sent using Zoho Mail ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org -- ========================================== Ignacio Granados Vega - TI3IES Cartago, Costa Rica========================================== Cuidemos el medio ambiente. Por favor no imprima este correo si no es necesario. ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org ----------------------------------------------------------- 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. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org

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TEVEL-7
by david.greenberg 19 Jul '24

19 Jul '24

Hello All,TEVEL-7 FM transponder has been activated, starting from today 19.07.24 20:25U for 72 hours.This is probably the last transponder operation of the TEVEL satellites. We need the beacon transmissions for some student projects.73,David 4X1DGנשלח מה-Galaxy שלי

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Re: TEVEL-5 and TEVEL-6 off the list
by Joseph Fitzgerald (KM1P) 19 Jul '24

19 Jul '24

TEVEL 5 and 6 had perigees well under 200 km associated with their last published TLE sets, so they are almost certainly part of our atmosphere at this point. The remaining TEVEL satellites are a little higher, they will remain in orbit for another 2 weeks or so. See for example TEVEL-3: https://celestrak.org/NORAD/elements/graph-altitude.php?CATNR=50988 Joe Fitzgerald (KM1P) AMSAT Orbital Elements Manager

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