First to All AMSAT member !!
I would like to inform you that doing coordinated with the IARU satellite frequency is of Astroberry company (http://www.astroberry.co.th) not duty of me or Radio Amateur Society of Thailand (RAST). I only just let you know to all. For detail of CW and GMSK Telemetry data. please see detail as link to download.

https://drive.google.com/drive/folders/1_d8sE_ndZcXc7tCKfj48ElBDSjENCuID and https://drive.google.com/drive/folders/10efW8JsE7BRyr5o8jb_Qko2EEWFnQrFx

73 Tanan

ในวันที่ ศ. 19 มี.ค. 2021 เวลา 03:41 Mark Jessop <vk5qi@rfhead.net> เขียนว่า:

Hi Tanan,

Can you please point us to the specifications for your 9k6 and 1k2 telemetry downlinks? Usage of the amateur radio band requires that satellite operators release all their telemetry formats. This allows interested amateurs to be able to have a go at decoding telemetry, and allows projects like SatNOGS to help collect telemetry using the huge networks of volunteer ground-stations.

In particular I would be very interested to decode the SSDV data.

Also, it looks like this frequency was not coordinated with the IARU - or at least it's not showing up on the IARU coordination list ( http://www.amsatuk.me.uk/iaru/finished.php ).

73

Mark VK5QI

On Fri, Mar 19, 2021 at 5:12 AM Tanan Rangseeprom <nanrspm@gmail.com> wrote:

BCCSAT-1 is an educational multi-spectral Cubesat 1U developed by the cooperation between Bangkok Christian College and the King's Mongkut university of technology north Bangkok. http://bccsat.bcc.ac.th/

Schedule When our cubesat is completely finished it will be launched into space in March 20,2021 06.07 AM UTC at Russia with the Soyuz-2.1 rocket by UNISAT-7 GAUSS SRL to the low earth orbit at 575 km. http://en.roscosmos.ru/21973/ and https://www.roscosmos.ru/30285/

BCCSAT-1
1 99999U 21999A 21079.53571058 -.00000058 00000-0 00000+0 0 06
2 99999 098.4012 345.1641 0004344 283.2593 155.6823 14.80364805 03

Downlink Frequency
Beacon 435.635 MHz CW https://www.youtube.com/watch?v=hPpSTEf3PUI
Slow Scan Digital Video SSDV Data 435.635 MHz AFSK 1.2 kbps
Telemetry Data 435.635 MHz GMSK 9.6 kbps

After launch into space if AMSAT member receives the CW signal of BCCSAT-1 satellite. please send information to our team directly an email to: bccsat1@gmail.com

BCCSAT-1 is a technology demonstration satellite in Thailand. High school students in Bangkok Cristian College in collaboration with King Mongkut's University of Technology (KMUTNB) and the Radio Amateur Society of Thailand (RAST) https://www.youtube.com/watch?v=zEcg5q7ZBw0 are building the satellite.

The project aims to build capacity on systems engineering, space education, and radio communication technology to students. During the project, students will learn about communication technology through amateur radio activities. It also encourages other interested people to receive the satellite signal.

The main missions of BCCSAT-1 include: (1) testing in-house developed satellite transceiver and antenna in orbit (2) experiment of Slow-Scan Digital Video (SSDV) transmission from the satellite (3) take pictures of Earth by cameras onboard satellite

BCCSAT-1 communication subsystem is an in-house developed transceiver and antennas. It has the capability to transmit GMSK modulation signal at 9.6 kbps, FSK for SSDV at 1.2 kbps and receive AFSK signal at 1.2 kbps. The transceiver will send its parameter such as RSSI and temperature to the ground station.

BCCSAT-1 will carry four cameras onboard the satellite and aim to capture images of the Earth in different wavelengths: red, green, blue, NIR, and Red Edge band.

We hope to process the images acquired for the Normalized Difference Vegetation Index (NDVI) and widely used in Science education. The images will be widely distributed among amateur radio community via the experiment of SSDV transmission system and GMSK packets downlink. Moreover, BCCSAT-1 will be able to transmit pre-stored images chosen by high school students.

BCCSAT-1 will provide the multi spectral images by having the total of 5 cameras on board; Red, Green, Blue, NIR, and Red Edge bands. The images we get from these cameras will be used to process for the Normalized difference vegetation index (NDVI), that will significantly provides huge advantage on analyzing the terrain of the country.

73

Tanan Rangseeprom , HS1JAN

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