Thank you for the additional insights. Always love learning more about the detailed processes behind getting these birds in space…
-- Devin L. Ganger (WA7DLG) email: devin@thecabal.orgmailto:devin@thecabal.org web: Devin on Earthhttp://www.devinonearth.com/ cell: +1 425.239.2575
From: Nitin Muttin vu3tyg@yahoo.co.in Sent: Wednesday, April 3, 2019 12:38 PM To: Nico Janssen hamsat@xs4all.nl; amsat-bb@amsat.org; ray.hoad@mypbmail.com >> Ray Hoad ray.hoad@mypbmail.com; Devin L. Ganger devin@thecabal.org Subject: Re: [amsat-bb] Objects from PSLV C45 launch identified
Thanks Devin for sharing your thoughts and I agree that 145.825 is the designated freq for APRS satellites but as per procedure we had some constraints on the API submission which is a prerequisite for submission to IARU for frequency co ordination. I have notified IARU prior to the launch that AISAT-1 will use 145.825 as this is a dedicated APRS payload. We will ensure the process are followed in the future and to role model such submissions.
73 Nitin [VU3TYG]
On Thursday, 4 April, 2019, 12:48:52 am IST, Devin L. Ganger <devin@thecabal.orgmailto:devin@thecabal.org> wrote:
Regarding AlSat 1 and its APRS payload, I thought that 145.825 MHz was the accepted frequency for all APRS on satellites. So I'm curious how that qualifies as not coordinated if they're following established procedure?
Thanks in advance for any additional knowledge you can share,
-- Devin L. Ganger (WA7DLG) email: devin@thecabal.orgmailto:devin@thecabal.org web: Devin on Earth cell: +1 425.239.2575
-----Original Message----- From: AMSAT-BB <amsat-bb-bounces@amsat.orgmailto:amsat-bb-bounces@amsat.org> On Behalf Of Nico Janssen Sent: Wednesday, April 3, 2019 5:43 AM To: amsat-bb@amsat.orgmailto:amsat-bb@amsat.org; ray.hoad@mypbmail.commailto:ray.hoad@mypbmail.com >> Ray Hoad <ray.hoad@mypbmail.commailto:ray.hoad@mypbmail.com> Subject: [amsat-bb] Objects from PSLV C45 launch identified
All,
Doppler measurements show that AstroCast 0.2 is object 44083, 2019-018F. Downlink: 437.1729 MHz.
Doppler measurements show that AISTechSat 3 is object 44103, 2019-018AB. Downlink: 436.7302 MHz. Note that this frequency has NOT been coordinated with the IARU.
Doppler measurements show that the PS4 stage of PSLV C45, with the AIS, APRS and ARIS payloads attached, is object 44104, 2019-018AC. The APRS payload of AMSAT-India is called AISat 1 and has downlink frequency 145.825 MHz. Note that this frequency has NOT been coordinated with the IARU.
Doppler measurements show that the 6U Cubesat M6P is now about 50 s behind the PS4 stage. TLEs for M6P are not yet available. The downlink frequency of M6P is 437.265 MHz. Note that coordination of this frequency has been DECLINED by the IARU because there is no amateur radio involved in this mission.
73, Nico PA0DLO
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_______________________________________________ Sent via AMSAT-BB@amsat.org.mailto:AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb