CAS-5A launched

DB2OS · Dec 9th 2022

Hello OM,

The CAMSAT CAS-5A amateur radio satellite will be piggybacked on the Smart Dragon-3 Y1 launch vehicle and launched from the sea launch platform in the Yellow Sea at UTC 06:35:02 on December 9.

CAS-5A deployment orbital elements:

Flight Time 724.670s
Semi-major axis 6926.918 Km
eccentricity 8.143e-04
Orbital inclination 97.524°
Pergee height (relative to equatorial radius) 543.140km
Apogee altitude (relative to equatorial radius) 554.422km
Longitude of the ascending node 298.491°
Perigee angle (for reference only) 188.413°
True near point angle (for reference only) 344.096°
Flat near point angle (for reference only) 344.121°
Orbital period 5737.479 s
Absolute speed 7591.699 m/s
Absolute speed local inclination -1.278e-02°
Geodetic longitude 119.477°
Geographic latitude 7.475°
voyage 3336.983 km

The user's manual of CAS-5A satellite will be available later.

73!
Alan Kung, BA1DU

DB2OS · Dec 9th 2022

Signal received by DK0SB Bochum:

https://network.satnogs.org/observations/6854630/

more here: https://community.libre.space/…2022-12-09-06-35-utc/9865

DB2OS · Dec 9th 2022

Here is the launch video from CAS-5A

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DB2OS · Dec 10th 2022

CAS-5A is very strong on the Eggbeater: https://network.satnogs.org/observations/6854723/

The H/U-Transponder seems to be operational..

Details here: http://www.amsatuk.me.uk/iaru/…_detail.php?serialnum=619

ON7CL · Dec 10th 2022

Hello,

Are the keps for SatPC32 already updated, I see nothing there ?

73 - Rudi - ON7CL

HB9SKA · Dec 10th 2022

Quote from ON7CL

Hello,

Are the keps for SatPC32 already updated, I see nothing there ?

73 - Rudi - ON7CL

No, its too early. Space-track.org has nothing listed for the launch date of 2022-12-09.

SatNogs uses this precalculated set:

Code

1 54682U 22167A   22343.84795039  .00053971  00000-0  34268-2 0  9992
2 54682  97.5349 118.8418 0013158 262.8095  97.1654 15.08588395    98

ON7CL · Dec 10th 2022

Tnx Thomas, 73

DD1US · Dec 10th 2022

Hi Rudi,

Nico PA0DLO, who is quite experienced in tracking and identifying satellites, thinks that

CAS 5A is object 54684 (2022-167C).

This might change over time but presently those keps seem to match best.

Try these keps:

1 54684U 22167C 22343.84789909 .00012645 00000-0 80776-3 0 9992

2 54684 97.5368 118.8404 0014186 263.7133 96.2527 15.08701216 88

Kind regards

Matthias

http://www.dd1us.de

HB9SKA · Dec 15th 2022

CAS-5A Designated Fengtai-OSCAR 118 (FO-118)

On December 9, 2022, the CAS-5A satellite was launched on a Smart Dragon-3 Y1 launch vehicle from the Chinese sea launch platform in the Yellow Sea. The Chinese Amateur Satellite Group (CAMSAT), working closely with local education authorities, designed, built, tested, and manages the CAS-5A satellite. Thirty-one students from ten high schools learned satellite design, manufacturing, and applications through educational courses initiated by CAMSAT and the Fengtai educational institution. The satellite carries V/u and H/u linear transponders, a V/u FM repeater, and CW and GMSK telemetry beacons for amateur radio use.

At the request of CAMSAT and the CAS-5A team, AMSAT hereby designates the satellite as Fengtai-OSCAR 118 (FO-118). 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, OSCAR Number Administrator, for the above information]

DB2OS · Dec 15th 2022

Hello OM,

Attached is the CAS-5A Amateur Radio Satellite User's Manual V1.0, for your reference.

73 Alan, BA1DU CAMSAT

CAS-5A Amateur Radio Satellite User's Manual V1.0_small.pdf

OE6MUE · Dec 15th 2022

im anhang das tle-file "nasabare.txt" aus "orbitron" mit CAS-5A !!!! 73 de oe6mue

nasabare.txt

HB9SKA · Dec 16th 2022

Wie Matthias oben bemerkt hat, ist die NORAD-Nr. 54684 und nicht mehr 54682. Orbitron hat sich noch die vorher benutzte Nr. gefischt. Letzten Sonntag hatte ich die CW-Bake mit 54684 verfolgt und die Kepler haben gepasst. CAS-5A wurde noch nicht eindeutig identifiziert.

OE6MUE · Dec 16th 2022

Tnx Thomas, habe gerade nochmal die tle´s geprüft (heute 6uhr), orbitron "nasabare.txt" hat jetzt auch die norad-nr. 54684 und den sat von cas-5a auf fo-118 berichtigt, danke nochmal 73 de mike

nasabare.txt

HB9SKA · Dec 16th 2022

[Keps] Changes to AMSAT-NA TLE Distribution for December 8, 2022

Things happen fast in the amateur satellite world!

On December 9, 2022, CAMSAT's CAS-5A satellite was launched on a Smart
Dragon-3 Y1 launch vehicle from the Chinese sea launch platform in the
Yellow Sea. See AMSAT News Service Bulletin ANS-345 (Dated December 11,
2022) for transponder data.

Then!
At the request of CAMSAT and the CAS-5A team, AMSAT has designated the
satellite as Fengtai-OSCAR 118 (FO-118) on December 15, 2022. See Drew
Glasbrenner, KO4MA and OSCAR Number Administrator's bulletin entitled
"CAS-5A Designated Fengtai-OSCAR 118 (FO-118)" (dated December 15, 2022) for
details.

And then!
Originally FO-118 was thought to be NORAD Cat ID 54682, but more recent TLE
have revealed that CAS 5A is actually object 54684 (2022-167C). Thanks to
Nico Janssen, PA0DLO, for the update on the correct NORAD Cat ID for FO-118
(formally CAS-5A).

Therefore, the following satellite has been added to this week's AMSAT-NA
TLE distribution:

FO-118 NORAD Cat ID 54684.

Whew!

Ray Hoad
WA5QGD
AMSAT-NA Orbital Elements Manager

S57RW · Jan 29th 2023

Hi!

Will give a try on FO-118 H/u mode since never tried so far uplink on HF. To have less veriables to think about and didn't notice this info in the manual for this sat, are all transponders operational at the same time or if somebody for example is using the V/u mode than other transponders are off?

73 de Andrej - S57RW

HB9SKA · Jan 29th 2023

Hello Andrej

All Transponders should be operational at the same time. The Repeater has failures, see https://www.amsat.org/status/ .

S57RW · Jan 29th 2023

Hi Thomas,

Tnx for info. Will give a try tomorrow around 1400 UTC I have a good pass. Hopefully during the day the ionosphere won't reflect most of my signal back to earth. Need to try, have never tried to transmit on HF into space at least intentionally Alternatively can try on a night pass when the 15m band is closed.

Will report if managed to pass trough.

73 de Andrej - S57RW

S57RW · Jan 30th 2023

Hi!

Tried today with the pass starting at 14:01 at my location and surprisingly got trough H/u transponder easily. Soon after above horizon received the CW beacon strong. For 70cm downlink the arrow 7el hand held yagi was used. After transmitted on 15m uplink and could receive imediatelly my signal back on 70cm strong. TX power was 40W which was enough for low angle at AOS and guess still too much for CW. HF antenna is a end-fed 30m long oriented to nord-south as the sat trajectory was. Good results when the SAT was rising from the north and worse when above and toward south. But this confirms what I know about radiation pattern of my end-fed. On HF could allways work easily stations from norden directions but not same easy from southern.

Short clip on YouTube about the test. Sorry for bad video. Not so easy to hold the arrow in one hand, correcting for doppler and holding the camera in other Should put the phone on a tripod...

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After some break working LEO sats maybe time to install back the egg beaters in the garden and have some fun

73 de Andrej - S57RW

HB9SKA · Mar 5th 2023

Download of the latest CAS-5A User Manual v2.1:

https://community.libre.space/…DAYovvqiJjF4OEJW0yKxH.pdf

CAS-5A launched

DB2OS Dec 9th 2022

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