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Re: BeliefSat-0 orbital data restored, reception reports requested
by David Spoelstra 03 Feb '24

03 Feb '24

Zach N0ZGO - I am fascinated by your comment about the processor "has features which make it more robust". Can you elaborate please? And to everyone else that posted about the different processors used, thanks! I was a HW/SW engineer for years and developed several in-circuit emulators for Tektronix. Later in my career I taught microcontroller programming at college. I passed some of your info to the current professor there to inspire the students. -David, N9KT On Thu, Feb 1, 2024 at 11:27 AM Zach Metzinger via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > On 2/1/24 10:07, Paul Stoetzer via AMSAT-BB wrote: > > AMSAT's PACSAT board - a modern version of the microsats - uses a > > TMS-570, which is an ARM Cortex-R, running at up to 160 MHz with 1280K > > of flash storage and 192K of RAM. MRAM will be used for BBS storage. > > The TI TMS570 "Hercules" processor is also used on the Golf RT-IHU, > which will be the successor to the STM32 IHU used on the Fox series. > > It is important to note that the low-Earth orbit environment is much > more forgiving than MEO and HEO. Radiation tolerance is an important > factor when choosing hardware for these higher orbits, which drove the > selection of this specific COTS (common off-the-shelf) processor. It is > not a SOI (silicon on insulator) radiation-hard processor, but has > features which make it more robust than, say, your off-the-shelf STM32 > or ATMega64. > > 73, > > --- Zach > N0ZGO > > ----------------------------------------------------------- > > 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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CW Activity Day
by Mike Herr 02 Feb '24

02 Feb '24

I'm planning on being there from DM15

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ANS-033 AMSAT News Service Special Bulletin - Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency
by Paul Stoetzer 02 Feb '24

02 Feb '24

*AMSAT *News Service Special Bulletin*ANS-033* *February 2, 2024* In this edition: - Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency 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/ ------------------------------ Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency Moments ago, the AMSAT News Service received the following announcement from AMSAT Italia regarding IO-117 (GreenCube): *AMSAT Italia would like to inform the amateur community that its request to the Italian Space Agency, the owner of the GREENCUBE satellite, to reconsider its decision of decommissioning the satellite is under evaluation.* *Waiting for its decision, IO-117 is still operational.* *The GreenCube satellite was born as a scientific experiment placed in MEO orbit which successfully concluded its mission.* *IO-117 is the HAM Radio part of the satellite consisting of a digipeter which was promoted by AMSAT Italia and coordinated by IARU-R1.* *At the moment AMSAT Italia is committed to promoting the continuation of the mission for the HAM Radio part of Greencube.* *AMSAT Italia BoD* *[ANS thanks AMSAT Italia 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 Contributing 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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TEVEL-7
by david.greenberg 02 Feb '24

02 Feb '24

Hello All, TEVEL-7 FM transponder has been activated, starting from today 02.02.24 18:40U for 72 hours.73,David 4X1DGנשלח מה-Galaxy שלי

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Re: CW Activity Day
by Mark 02 Feb '24

02 Feb '24

Doug, I have 3 good passes to play with on Saturday from EL88. 0942 - 1002 UTC 1942 - 2003 UTC 2135 - 2157 UTC From DN71 to EL88 we'll need to do the 2135 - 2157 UTC pass. Look for me calling CQ toward the bottom of the bandpass. I don't believe we've ever worked, so looking forward to confirming DN71 73 Mark, N1MT On Fri, Feb 2, 2024 at 9:14 AM Douglas B Tabor <dtabor52(a)icloud.com> wrote: > Hi Mark, > > Give me a time and frequency, and I’ll be happy to do some RS-44 CW > Saturday (even in the forecast snow) > > 73, > > Doug, N6UA > DN71 > Cheyenne, WY

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Hello All
by samuel galet 02 Feb '24

02 Feb '24

I have two Icom 706 mkllg transceivers to use for satellites that have not been used in more than 10 years. Is their anything I should do to condition them before exposing them to 12-13 volts DC? Also I have numerous old tv rotors to use for tracking satellites. I'm looking for a program to use with the icom 706 that will point my antennas to a satellite and or correct for doppler. Any suggestions. Many thanks. 73 de VE2LJV Samuel Galet Sent from my Galaxy

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Re: CW Activity Day
by crohtun＠aol.com 02 Feb '24

02 Feb '24

I’ll be on a rove to FM09 tomorrow and will be doing phone 5 kHz below the Doppler adjusted rx frequency +/- QRM. If I run out of customers I’ll come down and join the cw party. 73, Ray KN2K Sent from the all new AOL app for iOS On Friday, February 2, 2024, 9:42 AM, Wes Baden via AMSAT-BB <amsat-bb(a)amsat.org> wrote: I’ll be on tomorrow too, on the lower end of the bandpass. Last time, there were also half a dozen or so EU CW ops on. A good opportunity for US ops to work a little DX. Wes NA1MEFN54 Maine On Fri, Feb 2, 2024 at 8:35 AM Mark via AMSAT-BB <amsat-bb(a)amsat.org> wrote: A few weeks back, there was a suggestion to have the first Saturday of the month be CW Activity Day. I'll be on RS-44 and doing CW from EL88. I'd love to exchange info with you. 73Mark, N1MT ----------------------------------------------------------- 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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FW: Re: TX5S (Clipperton Island) on IO-117
by samuel galet 02 Feb '24

02 Feb '24

Sent from my Galaxy -------- Original message -------- From: samuel galet <samuel.galet(a)outlook.com> Date: 2024-01-28 7:11 p.m. (GMT-05:00) To: crohtun(a)aol.com, Bernie and Cheryl <hamdan(a)ix.netcom.com>, ">> AMSAT" <amsat-bb(a)amsat.org> Subject: RE: [AMSAT-BB] Re: TX5S (Clipperton Island) on IO-117 Ray, Thanks for the information. I can set up a receiver that I have that tunes 440 sideband and see if I hear anything. I don't have a preamp for 440 only for 2 meters I may try an old analogue tv amplifier but I have heard they are very noisy. 73 de VE2LJV Samuel Galet Sent from my Galaxy -------- Original message -------- From: crohtun--- via AMSAT-BB <amsat-bb(a)amsat.org> Date: 2024-01-28 1:45 p.m. (GMT-05:00) To: samuel galet <samuel.galet(a)outlook.com>, Bernie and Cheryl <hamdan(a)ix.netcom.com>, ">> AMSAT" <amsat-bb(a)amsat.org> Subject: [AMSAT-BB] Re: TX5S (Clipperton Island) on IO-117 Samuel, IO-117 is simplex so a UHF rig capable of split operation is required. Doppler shift of tx and rx from the bird’s nominal operating frequency is always equal and opposite in sign. . Examples of software that will control for Doppler include the SatPC32ISS version developed for IO-117 and the CSN S.A.T. Other required software to code and decode packets include UZ7HO’s soundmodem (or its equivalent) and a client user interface, the best-in-class being OZ9AAR’s GreenCube Terminal. S5Labs originally recommended that you run at least 25w and have a beam with at least 12dBi of gain. With the heavy congestion on the satellite today, something more like 50w at the driven element and at least 15dBi will get you digipeat rates in the single digits on congested passes. Decoding packets requires adequate SNR. You’ll hear them by ear well before decoding will start. You may need a mast-mounted preamp to get adequate SNR. BUT…here’s the thing…S5Labs has a requirement to shut down IO-117 now that its mission has ended. “Passivation” is slated for 5 February unless the shut down requirement can be annulled and some other organization takes over control of the bird. That is all yet to be determined. 73, Ray KN2K Sent from the all new AOL app for iOS<https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661> On Sunday, January 28, 2024, 12:25 PM, samuel galet via AMSAT-BB <amsat-bb(a)amsat.org> wrote: Good afternoon all. Is it possible to decode digipeats and transmit digipeats to io117 without elaborate equipment such as the icom 9700 but just a dual band vhf uhf transceiver with adequate output power on uhf and a simple 440 beam or ground plane antenna all manually positioned? What software do I need to be effective? Thanks to all. 73 de VE2LJV Samuel Galet Sent from my Galaxy -------- Original message -------- From: Bernie and Cheryl via AMSAT-BB <amsat-bb(a)amsat.org> Date: 2024-01-27 2:49 a.m. (GMT-05:00) To: ">> AMSAT" <amsat-bb(a)amsat.org> Subject: [AMSAT-BB] TX5S (Clipperton Island) on IO-117 Dear Folks: At 2:02 UTC today (the 27th), I was fortunate enough to work TX5S on IO-117. I was able to decode a number of their digipeats to the satellite, and I am grateful that they were able to decode one of mine (I got the always appreciated "Logged 73" message from them). 15 minutes later, they sent a text to "ALL" saying "Last Pass" and worked a few more people before the bird hit LOS for me. It was like they were waving good bye (they are taking down their stuff tomorrow). They were a great operation on the HF bands, but it's the first time I've worked a major DXpedition on satellite. What a thrill! I so hope that we, as a community, can find the means to prevent the decommissioning of IO-117 as announced the other day. I appreciate AMSAT-NA reaching out and offering to do whatever is necessary to keep it going. 73 de Bernie, KF0QS ----------------------------------------------------------- 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: CW Activity Day
by Wes Baden 02 Feb '24

02 Feb '24

I’ll be on tomorrow too, on the lower end of the bandpass. Last time, there were also half a dozen or so EU CW ops on. A good opportunity for US ops to work a little DX. Wes NA1ME FN54 Maine On Fri, Feb 2, 2024 at 8:35 AM Mark via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > A few weeks back, there was a suggestion to have the first Saturday of the > month be CW Activity Day. I'll be on RS-44 and doing CW from EL88. I'd love > to exchange info with you. > > 73 > Mark, N1MT > > > ----------------------------------------------------------- > > 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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CW Activity Day
by Mark 02 Feb '24

02 Feb '24

A few weeks back, there was a suggestion to have the first Saturday of the month be CW Activity Day. I'll be on RS-44 and doing CW from EL88. I'd love to exchange info with you. 73 Mark, N1MT

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