December 2022 - AMSAT-BB - mailman.amsat.org

ANS-009 AMSAT News Service Weekly Bulletins
by Paul Stoetzer 16 Oct '23

16 Oct '23

AMSAT NEWS SERVICE ANS-009 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 http://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/ In this edition: * The ARRL Foundation Grants an Award for the ARISS *STAR* Keith Pugh Memoriam Project * EASAT-2 and Hades Satellites with FM Repeaters Scheduled for Launch on January 13th * Changes to AMSAT TLE Distribution for January 6, 2022 * ARISS News * Upcoming Satellite Operations * Hamfests, Conventions, Maker Faires, and Other Events * Satellite Shorts From All Over ANS-009 AMSAT News Service Weekly Bulletins To: All RADIO AMATEURS From: Radio Amateur Satellite Corporation 712 H Street NE, Suite 1653 Washington, DC 20002 DATE 2022 Jan 09 The ARRL Foundation Grants an Award for the ARISS *STAR* Keith Pugh Memoriam Project ARISS‐USA is known for engaging students in STEAM (science, technology, engineering, arts, and mathematics) subjects by arranging live question-and-answer sessions via amateur radio (ham radio) between K‐12 students and astronauts on the International Space Station (ISS). In the last two decades, over 1,400 contacts have connected more than one million youth using amateur radio, with millions more watching and learning. ARISS is constantly pursuing educational opportunities that inspire student interest and outcomes. ARISS-USA is pleased to announce that the ARRL Foundation awarded funding for the first year of a two-year project called the “ARISS *STAR* Keith Pugh Memoriam Project” with *STAR* being the acronym for Space Telerobotics using Amateur Radio. The ARRL Foundation very generously provided $47,533. The project honors the memory of highly-respected Keith Pugh, whose call sign was W5IU (Silent Key, May 2019). He was an expert supporter of ARISS for many years, a star ARISS Technical Mentor assisting schools with their ARISS contacts, finding educators who might be interested in learning about ARISS, and going to schools to lead youth in a variety of lessons about wireless radio technology. ARISS *STAR* (short for ARISS *STAR* Keith Pugh Memoriam Project), is a brand-new education program that will enable US junior high and high school education groups to remotely control robots through digital APRS (Automatic Packet Reporting System) commands using amateur radio. Year 1 focuses on systems development and initial validation of *ARISS* STAR, and Year 2 focuses on evaluation and final validation. Systems development and evaluation will be led by university staff and students who will undertake hands-on-wireless and telerobotics lesson development, learn about Amateur Radio, and support the development of the *STAR* engineering hardware and software. Next, youth teams will be selected to experiment and critique *STAR* telerobotics scenarios along closed courses and radio lessons. Some participating students will want to prepare for, and earn, their amateur radio licenses, using ham radio to learn and practice concepts in radio technology and radio communications. Overarching goals for *STAR* are to improve and sustain ARISS STEAM educational outcomes with youth. Robotics is gaining popularity among youth and adults alike. Telerobotics adds a wireless accent to robotic control. *STAR*, therefore, gives ARISS a new educational dimension to attract the attention of more education groups and their students and educators—outreach that promises to attract new audiences. The ARRL Foundation was established in 1973 by ARRL, The National Association for Amateur Radio ®, and advances the art, science and societal benefits of the Amateur Radio Service by awarding financial grants and scholarships to individuals and organizations in support of their charitable, educational and scientific efforts. ARISS-USA Executive Director Frank Bauer, KA3HDO, praised the ARRL Foundation, saying, “ARISS team member, Keith Pugh, W5IU, poured his energy into inspiring, engaging and educating youth in space and in amateur radio endeavors. What a better way to honor Keith than through the ARISS *STAR* initiative. We thank the ARRL Foundation for their vision to move this initiative forward. Maybe someday one of our ARISS *STAR* students will use their telerobotics skills to control scientific rovers on the Moon or Mars!” [ANS thanks ARISS for the above information] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ The 2022 AMSAT President's Club coins have arrived! To commemorate the 50th anniversary of its launch on October 15, 1972, this year's coin features an image of AMSAT-OSCAR 6. Join the AMSAT President's Club today and help Keep Amateur Radio in Space! https://www.amsat.org/join-the-amsat-presidents-club/ +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ EASAT-2 and Hades Satellites with FM Repeaters Scheduled for Launch on January 13th I just wanted to confirm with you all that the launch of EASAT-2 and Hades satellites is scheduled for this January, 13, 15.25 UTC on SpaceX TR-3 flight, as it has been confirmed to us by Alba Orbital. As it has been noted in older posts, both satellites offer voice communications in FM and data retransmission in FSK or AFSK up to 2400 bps, such as AX.25 or APRS frames. They also transmit voice beacons in FM with the callsigns AM5SAT and AM6SAT, as well as CW, and, in the case of Hades, SSTV live images too. We thank you in advance for trying to receive their signals and of course for trying to use the repeater. EASAT-2 one will be automatically active 30 minutes after the launch although it would be a priority for us trying to have some telemetry frames first to check if all is working properly. I tell you a bit more about the satellites: EASAT-2 has been designed and built jointly by AMSAT-EA and students from the European University of Degrees in Aerospace Engineering in Aircraft and in Telecommunication Systems Engineering, with contributions from ICAI in the communications part, and it incorporates as an experimental load a basalt material from Lanzarote, similar to lunar basalts, provided by the CSIC research group on meteorites and planetary geosciences at the Institute of Geosciences, IGEO (CSIC-UCM) and that could be used as a construction material on the Moon. This project was promoted and has the collaboration of the ETSICCP (UPM). The UNESCO world geopark of Lanzarote and the Chinijo archipelago has been used for different investigations as an analogue of the Moon and Mars, also including the training of ESA astronauts. The selected basalt material meets the requirements to be used as a simulant of the existing basalt on the Moon. The purpose of the experiment is to determine its evolution in space based on periodic measurements of some of its properties. Although the experiment is limited and constitutes the first phase of this type of study, it represents an important milestone as it is the first of its kind to be introduced on such a small satellite. As for Hades, its payload consists of a miniature camera module that outputs the captured images as an audio signal in SSTV mode. The SSTV formats it uses are compatible with Robot36, Robot72, MP73 and MP115. The design of the cam module is based on the one used in the successful mission of the PSAT2 satellite, an amateur radio satellite of the United States Naval Academy and the Brno University of Technology. This camera has been operational since June 25, 2019: (http: // www.aprs.org/psat2.html). The camera chip is the Omnivision OV2640, which provides a resolution of up to 2M pixels and compressed JPEG output. The resolution is limited by the internal memory of the CPU (MCU) that controls the camera to 320x240 (typical) or 640x480 maximum. The MCU selected for the control is the STM32F446RET6, which has the smallest possible footprint with connection to a DCMI peripheral, necessary for the connection with the camera. Images can be stored in 2MB serial flash memory. The complete SSTV encoder has managed to be implemented on a 4 layer PCB with dimensions of only 38x38mm. The MCU can be fully controlled from ground stations. The firmware allows the sending of live camera images, images previously saved in flash memory, or images encoded in ROM. It also provides PSK telemetry and imaging advance scheduling with current status (event counters, temperature, voltage, light conditions, etc.) and a brief summary. The described module has been developed and manufactured in the Department of Radioelectronics of the Brno University of Technology in the Czech Republic. Both hardware and firmware designs with the source codes will be available on Github under the MIT license (https://github.com/alpov/SatCam). As noted, initially only the EASAT-2 repeater is active. Hades one will be activated by remote control a few days after launch. The frequencies coordinated with IARU for both satellites are as follows: EASAT-2 145.875 MHz uplink, Modes: FM voice (no subtone) and FSK 50 bps, AFSK, AX.25, APRS 1200/2400 bps 436.666 MHz downlink, Modes: FM voice, CW, FSK 50 bps, FM voice beacon with AM5SAT callsign HADES 145.925 MHz uplink, Modes: FM voice (no subtone) and FSK 50 bps, AFSK, AX.25, APRS 1200/2400 bps 436.888 MHz downlink, Modes: FM voice, CW FSK 50 bps, SSTV Robot 36, FM voice beacon with callsign AM6SAT The description of the transmissions can be found in the following document. https://www.amsat-ea.org/app/download/12530621/AMSAT+EA+-+EASAT-2+and+HADES… AMSAT-EA appreciates the receipt of telemetry, voice beacons and SSTV images. A paper QSL will be sent to those who submit their transmissions. It can be done through the following link: http://data.amsat-ea.org [ANS thanks Felix Paez, AMSAT-EA Mission Manager, for the above information] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Need new satellite antennas? Purchase Arrows, Alaskan Arrows, and M2 LEO-Packs from the AMSAT Store. When you purchase through AMSAT, a portion of the proceeds goes towards Keeping Amateur Radio in Space. https://amsat.org/product-category/hardware/ +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Changes to AMSAT TLE Distribution for January 6, 2022 CAMSAT XW-3(CAS-9) is designated Hope-OSCAR 113, HO-113: HO-113 - Cat ID 50446 (Formerly known as XW-3 (CAS-9)) Drew Glasbrenner, AMSAT VP Operations / OSCAR Number Administrator, announced the following OSCAR assignment in AMSAT News Service Bulletin ANS-002 dated January 2, 2022: "At the request of CAMSAT and the XW-3 (CAS-9) team, AMSAT hereby designates XW-3 (CAS-9) as Hope-OSCAR 113 (HO-113). We congratulate the owners and operators of HO-113, thank them for their contribution to the amateur satellite community, and wish them continued success on this and future projects." Also thanks to Joe Fitzgerald, KM1P, for his timely name changing of CAMSAT's new satellite to HO-113 in last week's AMSAT NA webpage TLE distribution of Object Cat ID 50446. [ANS thanks Ray Hoad, WA5QGD, AMSAT Orbital Elements Manager for the above information] --------------------------------------------------------------------- ARISS News No scheduled contacts reported. The next mode change to voice cross band repeater is expected to occur in early January, 2022. 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] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ AMSAT, along with our ARISS partners, is developing an Amateur Radio package, including two-way communication capability, to be carried on-board Gateway in lunar orbit. Support AMSAT's projects today at https://www.amsat.org/donate/ +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Upcoming Satellite Operations Events: 4A90, MEXICO (Special Event). Members of the Federacion Mexicana de Radio Experimentadores (FMRE)[Mexican Society]are celebrating their 90th anniversary during January, February and March 2022 promoting each of the 31 States and Mexico City with the following 32 different special event callsigns and 4A90FMRE: January 1st-15th: 4A90COL, 4A90CMX, 4A90EMX, 4A90GTO, 4A90HGO, 4A90JAL and 4A90MIC January 16-30th: 4A90MOR, 4A90NAY, 4A90PUE, 4A90QRO, 4A90TLX and 4A90VER January 31st-February 14th: 4A90AGS, 4A90BAC, 4A90BCS, 4A90COA, 4A90CHH and 4A90DGO February 15th-March 1st: 4A90NLE, 4A90SLP, 4A90SIN, 4A90SON, 4A90TAM March 2nd-16th: 4A90CAM, 4A90CHI, 4A90GRO, 4A90OAX, 4A90QUI, 4A90TAB and 4A90YUC Activity will be on various HF bands using CW, SSB, RTTY, FT8/FT4 and the satellites. Awards are available (see QRZ.com for details). For more details on the event, see: http://fmre90.puebladx.org [ANS thanks Paul Overn, KE0PBR, AMSAT rover page manager, for the above information] --------------------------------------------------------------------- Hamfests, Conventions, Maker Faires, and Other Events AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events. Events with a confirmed AMSAT presence: HamCation 2022 - The ARRL National Convention Friday, February 11th, 2022 to Sunday, February 13, 2022 Central Florida Fairgrounds and Expo Park 4603 West Colonial Drive Orlando, Florida 32808 https://www.hamcation.com/ Hamvention 2022 Friday May 20, 2022 to Sunday May 22, 2022 Greene County Fairgrounds and Expo Center 210 Fairground Road Xenia, Ohio 45385 https://hamvention.org/ 2022 Rocky Mountain ARRL Division Convention Friday, October 7th, 2022 to Sunday, October 9th, 2022 Event Center at Archer 3921 Archer Pkwy Cheyenne, Wyoming 82007 https://wyhamcon.org/site Clint Bradford, K6LCS reports: Part of the “job description” for volunteer AMSAT Ambassadors is to “spread the gospel” of working satellites to clubs and conventions. PS 2022 is starting off with a bang! Presentations set for clubs in … Tennessee South Bay CA New York British Columbia Ontario Canada Victoria BC Sonoma CA Tampa FL Texas Nevada Think a 90-minute lively, informative, and fun “How to Work the Easy Satellites” Zoom presentation would be appropriate for your convention or club? Always included are overviews of the ARRL, AMSAT, and ARISS. And pre-presentation questions are solicited and welcome. Send an email or call! Clint Bradford K6LCS AMSAT Ambassador, ARRL instructor http://www.work-sat.com 909-999-SATS (7287) [ANS thanks Paul Overn, KE0PBR, AMSAT Events page manager, and Clint Bradford, K6LCS, for the above information] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Want to fly the colors on your own grid expedition? Get your AMSAT car flag and other neat stuff from our Zazzle store! 25% of the purchase price of each product goes towards Keeping Amateur Radio in Space https://www.zazzle.com/amsat_gear +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Satellite Shorts From All Over + A new distance record has been claimed on AO-109. ES4RM in KO49al completed a SSB QSO with F4DXV in JN04iu on 22-Dec-2021 at 15:24 UTC - a distance of 2,445 km. With a reported total power output of 8 mW, SSB QSOs over a decent range are quite a challenge. Can anyone do better? + With the recent re-enabling of the AO-73 transponder, Paul Stoetzer, N8HM, has issued the 59th 73 on 73 Award to JA1OJA. This award was completed using CW only. N8HM notes, "AO-73 is a fantastic satellite, but it can be a challenge due to the transponder's frequency drift. With the recent technical issues, we don't know how long it will be available. Get on and make some QSOs so that more operators can receive this award!" More information about the award can be found at https://amsat-uk.org/funcube/73-on-73-award/ + John Brier, KG4AKV, has posted a video regarding HO-113 and some of the issues with working it successfully. The video can be found at https://youtu.be/NglO_WJ2hhc + NASA reports that the James Webb Space Telescope has successfully deployed its sunshade and the full primary mirror. + Abstract Submission for the 2022 CubeSat Developer's Workshop is still open! The deadline is January 14th, 2022! More information about the 2022 CubeSat Developer's Workshop, to be held ar Cal Poly on April 26-28, 2022, can be found at https://www.cubesatdw.org/ + Version 1.11 of the HO-113 (XW-3) User's Manual, mainly adding the test mode telemetry data format. is now available at https://www.amsat.org/wordpress/wp-content/uploads/2022/01/XW-3_Manual_1.11… --------------------------------------------------------------------- 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 dot org

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Falconsat-3 TX ON
by Mark L. Hammond 15 Jan '23

15 Jan '23

Falconsat-3 TX ON for over 24 hours beginning 1132utc 17 Dec 2022. 73, Mark L. Hammond [N8MH] AMSAT Director and Command Station

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ANS-001 AMSAT News Service Weekly Bulletins
by kd4iz＠frawg.org 31 Dec '22

31 Dec '22

AMSAT NEWS SERVICE ANS-001 In this edition: * W2RS Memorial AMSAT CW Activity Day to be Held January 1st * HAARP was used to ping Asteroid 2010 XC15 * Space junk bill passes Senate unanimously * TJREVERB was deployed from the ISS on December 29, 2022 * Changes to AMSAT-NA TLE Distribution for Jan 1, 2023 * OSCAR number assigned for CAS-10 * ARISS News * Upcoming Satellite Operations * Hamfests, Conventions, Maker Faires, and Other Events * 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 http://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/ ANS-001 AMSAT News Service Weekly Bulletins To: All RADIO AMATEURS From: Radio Amateur Satellite Corporation 712 H Street NE, Suite 1653 Washington, DC 20002 DATE 2023 Jan 01 - Wishing All a Happy and Prosperous New Year W2RS Memorial AMSAT CW Activity Day to be Held January 1st In March 2022, the AMSAT community lost one of our pioneers when Ray Soifer, W2RS, became a silent key. In addition to his numerous contributions to AMSAT and the worldwide amateur satellite community, Ray was also the long time organizer of AMSAT's CW Activity Day - previously AMSAT Straight Key Night - held in conjunction with the ARRL's event on New Year's Day. In recognition of Ray's long time service to AMSAT and his keen interest in CW operating via satellite, AMSAT is pleased to announce that AMSAT's CW Activity Day will now be known as the W2RS Memorial AMSAT CW Activity Day in Ray's honor. The rules are simple - operate CW through any amateur satellite between 0000 UTC and 2359 UTC on January 1, 2023. Straight keys and bugs are encouraged, but not required. Logs are not required, but operators are encouraged to submit a report of their activity to the AMSAT-BB. Photos and video clips of activity are also encouraged - post them on Twitter and tag @AMSAT. Remember to use the minimum power required for communication as constant carrier modes, including CW, can disrupt transponder operation for other users. [ANS thanks AMSAT for the above information] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Last Day for 2022 AMSAT President's Club Membership When Theyre GoneTheyre Gone! Join the 2022 AMSAT President's Club today and help Keep Amateur Radio in Space! https://www.amsat.org/join-the-amsat-presidents-club/ (2022 membership closes 1/3/2022) +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ HAARP was used to ping Asteroid 2010 XC15 Researchers at the HAARP array in Alaska attempted the lowest-frequency asteroid radar experiment ever. On Tuesday, Dec. 27th, they pinged a passing space rock with shortwave radio waves at 9.6 MHz. This could allow them to see *inside* the asteroid. A number of amateur radio operators around the world were able to copy the signal. The signal appeared in a sequence of frequency sweep pings centered aroun the the 9.6MHz frequency in a "Ping" Wait 2 seconds. "Ping" Wait 2 seconds "Ping" pattern. That's what most ham radio operators heard last Tuesday when they received HAARP's radar transmission to asteroid 2010 XC15. Scott Tilley of Roberts Creek, British Columbia, provided a recording of what he saw. It may be viewed at: https://bit.ly/3C2YshF along with a vidoe that includes sound. The pulse was lopsided with a fast rise and a slow decay," notes Tilley. "I believe this is due to multipath propagation from HAARP in Alaska to my receiver in British Columbia." Everyone who picked up the pulse did so because Earth's ionosphere reflected some of HAARP's radio energy back to Earth. Only a fraction escaped into space and reached the asteroid. Tilley's high-time-resolution recording of the pulse shows that multiple reflections (probably with a dash of ducting and refraction) were involved. The complexity of the ionosphere, and how it modifies shortwave signals, is a key challenge for researchers who will be processing radar returns from asteroid 2010 XC15. Good luck to the radar team as we await their results! [ANS thanks spaceweather.com for the above information] --------------------------------------------------------------------- Space junk bill passes Senate unanimously U.S. Senator John Hickenlooper applauded Senate passage of his Orbital Sustainability (ORBITS) Act, a bipartisan bill to establish a first-of-its-kind demonstration program to reduce the amount of space junk in orbit. The bill passed the Senate unanimously. "From satellite communications to rockets carrying humans into deep space, space debris is a massive threat to space operations," said Hickenlooper, chair of the Senate Subcommittee on Space and Science. "I'm over the moon that our ORBITS Act passed and we can start cleaning up this space junk." Space junk, or orbital debris, currently threatens human space exploration, scientific research missions, and emerging commercial space services. There are approximately 8,000 metric tons of debris currently in orbit, including at least 900,000 individual pieces of debris that are potentially lethal to satellites. Because of the magnitude of the current debris, simply preventing more debris in the future is not enough. The ORBITS Act will jumpstart a program focused on research, development, and the demonstration of technologies capable of safely carrying out successful Active Debris Remediation (ADR) missions to create a new market for these services. Additional information may be found at https://bit.ly/3WwsCCa [ANS thanks spacedaily.com for the above information] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Need new satellite antennas? Purchase Arrows, Alaskan Arrows, and M2 LEO-Packs from the AMSAT Store. When you purchase through AMSAT, a portion of the proceeds goes towards Keeping Amateur Radio in Space. https://amsat.org/product-category/hardware/ +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ TJREVERB was deployed from the ISS on December 29, 2022 TJREVERB, an APRS digipeater 2U cubesat on 145.825 MHz, built by students at the Thomas Jefferson High School for Science & Technology was deployed on December 29, 2022 by NanoRacks from the International Space Station. TJREVERB was launched on November 22 from Kennedy Space Center, Florida as part of the SpaceX-26 Commercial Resupply Service Mission en route to the International Space Station. The launch is the culmination of seven years of hard work for TJ Space. Led by Robotics lab director Kristen Kucko, many students from Thomas Jefferson High School for Science and Technology have had a hand in this historic launch. A statement and description of the mission by Michael Roth and Kristen Kucko of Thomas Jefferson High School states: TJ REVERB is significant because the CubeSat was designed, built, coded and integrated entirely by high school students, said Kucko. The students did not use a satellite kit, nor did they have an industry or university partnership to assist them. Building satellites is not an easy task. According to Col. Nick Hague, Astronaut, (some)countries have not been able to build CubeSats. The students in TJ Space should be proud of their accomplishments. Additional information about the project may be found at: https://tjhsst.fcps.edu/features/launch-tjreverb-culmination-seven-year-proj ect-tj-space Kirsten Kucko, the teacher sponsoring the TJ Space team wrote, "TJ Space received crowdsourced reports that there is an APRS unit digipeating within the vicinity of the ISS. The spacecraft has the orbital characteristics of one of the satellites launched during the NRCSD 24 mission. " Since TJREVEB is the only CubeSat using APRS in that vicinity, TJREVERB could very well be that spacecraft. It is TJ Spaces assertion that something went critically wrong with TJREVERBs implementation of the Iridium radio and Iridium did not receive power to turn on. The APRS radio powered on as the backup radio and started digipeating. TJ Space continues to search for confirmation that this spacecraft is indeed TJREVERB. Any help from the community would be greatly appreciated. [ANS thanks Michael Roth and Kristen Kucko or Thomas Jefferson High School and JoAnne Maenpaa, K9JKM, for the above information] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Want to fly the colors on your own grid expedition? Get your AMSAT car flag and other neat stuff from our Zazzle store! 25% of the purchase price of each product goes towards Keeping Amateur Radio in Space https://www.zazzle.com/amsat_gear +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Changes to AMSAT-NA TLE Distribution for Jan 1, 2023 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 satellite has been removed from this week's AMSAT-NA TLE distribution: MYSat 1 NORAD Cat ID 44045 (Decayed from orbit 12/16/2022 per SpaceTrack). [ANS thanks Ray Hoad, WA5QGD, AMSAT Orbital Elements Manager, for the above information] --------------------------------------------------------------------- OSCAR number assigned for CAS-10 On November 12, 2022, the XW-4 (CAS-10) satellite was launched to the Chinese Space Station aboard the Tianzhou-5 spacecraft, by the Long March-7 Y6 launch vehicle from the Wenchang Launch Center in Hainan, China. On December 18, the XW-4 (CAS-10) satellite was separated from the station. The Chinese Amateur Satellite Group (CAMSAT) built and operates the satellite, in cooperation with a Chinese government space contractor and Macau University of Science and Technology, to serve radio amateurs around the world and educate students in space and radio communication science and technology. This satellite is also known as Macao Student Science Popularization Satellite No. 1, and is the first satellite from the Macao Special Administrative Region. The satellite carries a V/u linear transponder, and CW and GMSK telemetry beacons for amateur radio use. At the request of CAMSAT and the XW-4 (CAS-10) team, AMSAT hereby designates the satellite as Hope-OSCAR 119 (HO-119). We congratulate all the involved teams, thank them for their contribution to the amateur satellite community, and wish them continued success on this and future projects. [ANS thanks Drew Glasbrenner, KO4MA AMSAT VP Operations / OSCAR Number Administrator for the above information] -------------------------------------------------------------------- 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. No School Contacts are currently scheduled. 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] +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ AMSAT, along with our ARISS partners, is developing an Amateur Radio package, including two-way communication capability, to be carried on-board Gateway in lunar orbit. Support AMSAT's projects today at https://www.amsat.org/donate/ +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ Upcoming Satellite Operations Chris VE3FU / VO2AC / VO1FUA / VE2FUA: The weekend of January 27-29 @Dave_VE3KG and Chris, VE3FU will be competing in the CQ160 CW Contest as VO2AC from the Point Amour Lighthouse in Labrador (Zone 2). They will also be on the other HF bands starting January 24 as VO2AC and VO2AAA. They also plan on operating the linear and FM satellites from grid GO11 as VO2AC and VO2AAA from January 24-27. [ANS thanks Paul Overn, KE0PBR, AMSAT rover page manager, for the above information] --------------------------------------------------------------------- Hamfests, Conventions, Maker Faires, and Other Events AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events. MSAT Ambassador Clint Bradford K6ALCS has a few satellite presentations scheduled: -Greenville, North Carolina (1/10/23) -Ontario, Canada (1/16/23) -Thames Valley, England (5/11/23) Ham Radio University will be held 1/7/2023. Registration is now open for this virtual event at https://hamradiouniversity.org/. Peter Portanova, W2JV will be hosting a Satellite Forum on the History of Amateur Satellites. [ANS thanks Paul Overn, KE0PBR, AMSAT Events page manager, and Peter Portanova, W2JV for the above information] --------------------------------------------------------------------- Satellite Shorts From All Over + SpaceX launches first mission for Starlink Gen2 constellation using a Falcon 9 rocket from Cape Canaveral Wednesday with 54 more Starlink internet satellites, a mission to begin populating a new orbital shell authorized by federal regulators earlier this month for the companys Starlink Gen2 network. Liftoff of the Falcon 9 rocket from pad 40 at Cape Canaveral Space Force Station on SpaceXs Starlink 5-1 mission occurred at 4:34 a.m. EST (0934 GMT) Wednesday, about six minutes earlier than previously announced. The mission was SpaceXs 60th launch of the year, with one more Falcon 9 flight set to blast off later this week from Vandenberg Space Force Base, California, with an Israeli Earth-imaging satellite. he 54 satellites launching Wednesday were the first spacecraft deployed into a new segment of the Starlink constellation. The Falcon 9 rocket released the 54 satellites at an orbital altitude and inclination set aside for use by SpaceXs second-generation Starlink network, which the company eventually intends to launch on the new Starship mega-rocket. More at https://bit.ly/3IcrO0P. [ANS thanks spaceflightnow.com for the above information] + An Israeli reconnaissance satellite was carried into orbit during the final SpaceX launch of the year. The EROS-3 Earth-imaging satellite was launched aboard a Falcon 9 rocket from Vandenberg Space Force Base in California at 11:38 p.m. Thursday. The first stage detached successfully and landed on a SpaceX pad eight minutes after launch. The rocket was launched in retrograde, against the direction of the Earth's rotation, and carried the EROS-3 into low Earth orbit. More information is available at: https://bit.ly/3G8FXJI [ANS thanks Patrick Hilsman, UPI and Spacedaily.com for the above 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, Jack Spitznagel kd4iz at frawg dot org

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RTL-SDR type preamp on the birds?
by James Hickox 29 Dec '22

29 Dec '22

Hello. After many years away, I am beginning to get a shack ready to start using the satellites again. This time, I cannot go with the best hardware and will.need to do some compromises. I played with the SDR dongles awhile back and used one of the $20 wideband preamps. My question: if I were to set the preamp up with a diplexer as an input filter and 50 ohm terminations for protection along with the proper relays, could this preamp be useful if mounted near the antenna feed point? I cannot seem to find out any comparisons or testing against other homebrew or commercial units. Thanks and 73, James, AA5AO

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Leave
by Sundeep Shah 29 Dec '22

29 Dec '22

Leave On Thu, Dec 29, 2022, 2:22 AM Thomas Schuessler via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > As I stated in a previous email, I use a diplexer as a filter in front of > the preamp to black out if band influence. For the 70 cm preamp I have a > duplexer that is only passing the 70 cm band from the 70 cm antenna into > the preamp. There is a similar duplexer feeding 2 meters only to the 2 m > antenna, and that after the 2 m preamp. > > I will probably try one of the SSB preamps, which have a higher power > rating than the ARR that I have in hopes that the increased margin of error > will cause things to hold up better. > > Sent from my iPhone > > On Dec 28, 2022, at 12:28, Paul Andrews <w2hro.fn20(a)gmail.com> wrote: > > > The 70cm band is hamonically related to the 2m band. > > 2m into 70cm 3rd harmonic interference is more likely than 70cm into 2m. > > Happy New Year. > > 73 - Paul - W2HRO > > On Wed, Dec 28, 2022, 10:00 tjschuessler--- via AMSAT-BB < > amsat-bb(a)amsat.org> wrote: > >> I do not believe it is RF from the 2 Meter transmit that is leaking into >> the antenna side, as I run a duplexer in front of the preamp input. 70 CM >> portion of arrow through a duplexer with only the 70 cm signal passing >> through that duplexer. I do the same on the 2 Meter side. This >> arrangement almost totally eliminates any de-sense of the RX on 70 CM from >> 2 M transmit. >> >> >> >> *From:* Paul Andrews <w2hro.fn20(a)gmail.com> >> *Sent:* Tuesday, December 27, 2022 9:02 AM >> *To:* tjschuessler(a)verizon.net >> *Cc:* AMSAT-BB <AMSAT-BB(a)amsat.org> >> *Subject:* Re: [AMSAT-BB] UHF preamps >> >> >> >> Tom, >> >> >> >> Are you relying on the transmit RF sensing feature of this 432 MHz >> preamp? RF sensing can be unreliable. You might use the FT-847's RF amp >> enable output to trigger the external preamps. >> >> >> >> Another thought. It is possible that your 2m transmit signal is leaking >> into the input of the 70cm preamp. It's likely that significant coupling >> is occurring at the arrow antenna. >> >> >> >> You might consider using separate preamps and isolating relays. >> >> >> >> 73 - Paul - W2HRO >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> On Mon, Dec 26, 2022 at 11:32 PM tjschuessler--- via AMSAT-BB < >> amsat-bb(a)amsat.org> wrote: >> >> For my portable/temporary satellite antenna rig, I have need of using a >> UHF preamp, which I have strapped to the tripod that holds and aims my >> Arrow antenna. I find that my FT847 is just not as sensitive on 70 CM as >> it is on 2M. I have been using an ARR (Advanced Receiver Research ) >> SP432VDG which is supposed to have a maximum power pass through imitation >> of 25watts. I try to be pretty careful as to how much output I run through >> the thing, maybe limiting to 15 watts or so. Unfortunately, I have blown >> the preamp out several times, even with being conscious of the RF level. I >> sent the pre to them, they repaired and sent back. I recently discovered >> that I had blown my unit again. Symptom is that it adds noise to the >> output, but does not amplify any signals coming into it from the antenna. >> I have sent the unit in to ARR in the past for repair. This time I am >> contemplating replacing this one with a more robust device that might be >> able to handle more RF running through it (RF sensing means you will still >> hit the device with an instantaneous burst of RF before the internal relays >> kick in. >> >> >> >> A friend has confided that he has the higher power version of the ARR >> Preamps, but has had similar problems with killing the things. Thus I am >> in the market for maybe another option. While I oft times, will stroll >> over to the antenna tripod, and barrel off the cables going to and from the >> preamp to bypass completely from the transmit chain, this is kind of a >> pain, even in a portable situation. >> >> >> >> I looked at M2s web site and can find a 2 Meter amp, but no 70CM (Might >> be missing something. I have heard a lot of good things on the SSB >> preamps, but the only pace I can see them being sold, is Dolstra in >> Europe. Don’t see a US vendor. >> >> >> >> Looking for suggestions. I would be interested in buying pre-owned, if >> someone had a Preamp that would like a new home. >> >> >> >> I do have a question for Yaesu FT847 users. With that radio, you can >> power a Preamp via the built in Bia- T power inserter, And assume that when >> this mode is turned on, it cuts the inserted DC to the preamp as the >> tranciever goes into transmit. Does this work fast enough to protect, even >> RF switched preamps? That might be a good safety measure as I have >> traditionally used external DC to power my preamps. >> >> >> >> Wisdom from the cloud here would be much appreciated. >> >> . >> >> Tom Schuessler, N5HYP >> >> >> ----------------------------------------------------------- >> >> 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/[email protected] >> 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/[email protected] >> 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/[email protected] > 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: UHF preamps
by Paul Andrews 28 Dec '22

28 Dec '22

The 70cm band is hamonically related to the 2m band. 2m into 70cm 3rd harmonic interference is more likely than 70cm into 2m. Happy New Year. 73 - Paul - W2HRO On Wed, Dec 28, 2022, 10:00 tjschuessler--- via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > I do not believe it is RF from the 2 Meter transmit that is leaking into > the antenna side, as I run a duplexer in front of the preamp input. 70 CM > portion of arrow through a duplexer with only the 70 cm signal passing > through that duplexer. I do the same on the 2 Meter side. This > arrangement almost totally eliminates any de-sense of the RX on 70 CM from > 2 M transmit. > > > > *From:* Paul Andrews <w2hro.fn20(a)gmail.com> > *Sent:* Tuesday, December 27, 2022 9:02 AM > *To:* tjschuessler(a)verizon.net > *Cc:* AMSAT-BB <AMSAT-BB(a)amsat.org> > *Subject:* Re: [AMSAT-BB] UHF preamps > > > > Tom, > > > > Are you relying on the transmit RF sensing feature of this 432 MHz > preamp? RF sensing can be unreliable. You might use the FT-847's RF amp > enable output to trigger the external preamps. > > > > Another thought. It is possible that your 2m transmit signal is leaking > into the input of the 70cm preamp. It's likely that significant coupling > is occurring at the arrow antenna. > > > > You might consider using separate preamps and isolating relays. > > > > 73 - Paul - W2HRO > > > > > > > > > > > > > > > > > > > > > > > > On Mon, Dec 26, 2022 at 11:32 PM tjschuessler--- via AMSAT-BB < > amsat-bb(a)amsat.org> wrote: > > For my portable/temporary satellite antenna rig, I have need of using a > UHF preamp, which I have strapped to the tripod that holds and aims my > Arrow antenna. I find that my FT847 is just not as sensitive on 70 CM as > it is on 2M. I have been using an ARR (Advanced Receiver Research ) > SP432VDG which is supposed to have a maximum power pass through imitation > of 25watts. I try to be pretty careful as to how much output I run through > the thing, maybe limiting to 15 watts or so. Unfortunately, I have blown > the preamp out several times, even with being conscious of the RF level. I > sent the pre to them, they repaired and sent back. I recently discovered > that I had blown my unit again. Symptom is that it adds noise to the > output, but does not amplify any signals coming into it from the antenna. > I have sent the unit in to ARR in the past for repair. This time I am > contemplating replacing this one with a more robust device that might be > able to handle more RF running through it (RF sensing means you will still > hit the device with an instantaneous burst of RF before the internal relays > kick in. > > > > A friend has confided that he has the higher power version of the ARR > Preamps, but has had similar problems with killing the things. Thus I am > in the market for maybe another option. While I oft times, will stroll > over to the antenna tripod, and barrel off the cables going to and from the > preamp to bypass completely from the transmit chain, this is kind of a > pain, even in a portable situation. > > > > I looked at M2s web site and can find a 2 Meter amp, but no 70CM (Might be > missing something. I have heard a lot of good things on the SSB preamps, > but the only pace I can see them being sold, is Dolstra in Europe. Don’t > see a US vendor. > > > > Looking for suggestions. I would be interested in buying pre-owned, if > someone had a Preamp that would like a new home. > > > > I do have a question for Yaesu FT847 users. With that radio, you can > power a Preamp via the built in Bia- T power inserter, And assume that when > this mode is turned on, it cuts the inserted DC to the preamp as the > tranciever goes into transmit. Does this work fast enough to protect, even > RF switched preamps? That might be a good safety measure as I have > traditionally used external DC to power my preamps. > > > > Wisdom from the cloud here would be much appreciated. > > . > > Tom Schuessler, N5HYP > > > ----------------------------------------------------------- > > 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/[email protected] > 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/[email protected] > 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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FT-818ND and FTM-400XDR will be discontinued
by Alan 28 Dec '22

28 Dec '22

From John Kruk, national sales manager, so it is official and not a rumor: ANNOUNCEMENT - Dec.28th, 2022 Please be informed that the production of the FT-818ND and FTM-400XDR will be discontinued. We are forced to make this unfortunate decision due to difficulty we are having with the availability of some components. We appreciate your long-term patronage of the FT-818ND and FTM-400XDR. There seem to be some of both available, or in the pipeline. 73, Alan WA4SCA ----------------------------------- The prospect of domination of the nation's scholars by Federal employment, project allocations, and the power of money is ever present - and is gravely to be regarded. President Dwight D. Eisenhower

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Re: UHF preamps
by Paul Andrews 28 Dec '22

28 Dec '22

Tom, Are you relying on the transmit RF sensing feature of this 432 MHz preamp? RF sensing can be unreliable. You might use the FT-847's RF amp enable output to trigger the external preamps. Another thought. It is possible that your 2m transmit signal is leaking into the input of the 70cm preamp. It's likely that significant coupling is occurring at the arrow antenna. You might consider using separate preamps and isolating relays. 73 - Paul - W2HRO On Mon, Dec 26, 2022 at 11:32 PM tjschuessler--- via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > For my portable/temporary satellite antenna rig, I have need of using a > UHF preamp, which I have strapped to the tripod that holds and aims my > Arrow antenna. I find that my FT847 is just not as sensitive on 70 CM as > it is on 2M. I have been using an ARR (Advanced Receiver Research ) > SP432VDG which is supposed to have a maximum power pass through imitation > of 25watts. I try to be pretty careful as to how much output I run through > the thing, maybe limiting to 15 watts or so. Unfortunately, I have blown > the preamp out several times, even with being conscious of the RF level. I > sent the pre to them, they repaired and sent back. I recently discovered > that I had blown my unit again. Symptom is that it adds noise to the > output, but does not amplify any signals coming into it from the antenna. > I have sent the unit in to ARR in the past for repair. This time I am > contemplating replacing this one with a more robust device that might be > able to handle more RF running through it (RF sensing means you will still > hit the device with an instantaneous burst of RF before the internal relays > kick in. > > > > A friend has confided that he has the higher power version of the ARR > Preamps, but has had similar problems with killing the things. Thus I am > in the market for maybe another option. While I oft times, will stroll > over to the antenna tripod, and barrel off the cables going to and from the > preamp to bypass completely from the transmit chain, this is kind of a > pain, even in a portable situation. > > > > I looked at M2s web site and can find a 2 Meter amp, but no 70CM (Might be > missing something. I have heard a lot of good things on the SSB preamps, > but the only pace I can see them being sold, is Dolstra in Europe. Don’t > see a US vendor. > > > > Looking for suggestions. I would be interested in buying pre-owned, if > someone had a Preamp that would like a new home. > > > > I do have a question for Yaesu FT847 users. With that radio, you can > power a Preamp via the built in Bia- T power inserter, And assume that when > this mode is turned on, it cuts the inserted DC to the preamp as the > tranciever goes into transmit. Does this work fast enough to protect, even > RF switched preamps? That might be a good safety measure as I have > traditionally used external DC to power my preamps. > > > > Wisdom from the cloud here would be much appreciated. > > . > > Tom Schuessler, N5HYP > > ----------------------------------------------------------- > > 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/[email protected] > 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: Leo Pack issue
by Jim_WØNBC 27 Dec '22

27 Dec '22

A friend had an issue also and he said the phasing cable were marked wrong. Not sure if that is your issue. Jim, W0NBC. Sent from Yahoo Mail for iPhone On Tuesday, December 27, 2022, 10:59 AM, markemorris via AMSAT-BB <amsat-bb(a)amsat.org> wrote: Hello All, I recently assembled and mounted M2 LEO-Pack antenna system. Problem: The 2 meter SWR was impacted significantly "after" the antenna was mounted to the boom and phasing lines, coax, and peripheral wiring was secured. (The 70 centimeter side was not impacted.) I'm confident that adjustments to the shorting bars will bring the antenna back into resonance. Question: What's the best way to make the adjustments and perform the tests? Obviously I have both horizontal and vertical entities to adjust. Is there a sequence that I should follow? Any input is greatly appreciated. Warm wishes for a safe and healthy holiday season. Kind Regards best 73sMark Morris N3NJ ----------------------------------------------------------- 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/[email protected] 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

2 2

Leo Pack issue
by markemorris 27 Dec '22

27 Dec '22

Hello All,I recently assembled and mounted M2 LEO-Pack antenna system. Problem: The 2 meter SWR was impacted significantly "after" the antenna was mounted to the boom and phasing lines, coax, and peripheral wiring was secured. (The 70 centimeter side was not impacted.)I'm confident that adjustments to the shorting bars will bring the antenna back into resonance. Question: What's the best way to make the adjustments and perform the tests? Obviously I have both horizontal and vertical entities to adjust. Is there a sequence that I should follow? Any input is greatly appreciated. Warm wishes for a safe and healthy holiday season. Kind Regards best 73sMark Morris N3NJ

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