Category: Ham Satellite news

CAS-4A and CAS-4B Satellites from CAMSAT Launched today

Two CAMSATs armature radio payloads piggybacked on the optical remote sensing micro-satellites OVS-1A and OVS-1B have been launched at 11:00BJT
on June 15, 2017 at The Jiuquan Satellite Launch Center of China, using CZ-4B launch vehicle. The primary of this launch is a hard X-ray modulation
telescope satellite (HXMT).

Satellite Name: CAS-4A/OVS-1A

Architecture: Micro-satellite
? Dimensions: 494Lx499Wx630H mm
? Mass: 55kg
? Stabilization: three-axis stabilization system with its +Y surface faci ng the earth
? Primary Payload: optical Camera with 1.98m resolution
? Orbit:
? Orbit type : Sun synchronization orbit
? Apogee : 524km
? Inclination : 43?
? Period : 95.1min

? Amateur Radio Payload:
? Call sign: BJ1SK
? VHF Antenna: one 1/4? monopole antenna with max.0dBi gain is located at +Z side
? UHF Antenna: one 1/4? monopole antenna with max.0dBi gain is located at -Z side
? CW Telemetry Beacon: &n bsp; 145.855MHz 17dBm
? AX.25 4.8k Baud GMSK Telemetry: 145.835MHz 20dBm
? U/V Linear Transponder Downlink: 145.870MHz 20dBm, 20kHz, Inverted
? U/V Linear Transponder Uplink: 435.220MHz

? Satellite Name: CAS-4B/OVS-1B
? Architecture: Micro-satellite
?Dimensions: 494Lx499Wx630H mm
?Mass: 55kg
? Stabilization: three-axis stabilization system with its +Y surface facing the earth
? Primary Payload: optical Ca mera with 1.98m resolution
?Orbit:
? Orbit type : Sun synchronization orbit
? Apogee : 524km
? Inclination : 43?
? Period : 95.1min

?Amateur Radio Payload:
? Call sign: BJ1SL
? VHF Antenna: one 1/4? monopole antenna with max.0dBi gain is located at +Z side
? UHF Antenna: one 1/4? monopole antenna with max.0dBi gain is located at -Z side
? CW Telemetry Beacon: 145.910MHz&n bsp; 17dBm
? AX.25 4.8k Baud GMSK Telemetry: 145.890MHz 20dBm
?U/V Linear Transponder Downlink: 145.925MHz 20dBm, 20kHz, Inverted
?U/V Linear Transponder Uplink: 435.280MHz

73!
Alan Kung, BA1DU

Satelliten LilacSat-1 är nu släppt från ISS i samband med QB50-projektet. LilacSat har en mer avancerad amatörradio ombord jämfört med de andra satelliterna.
Läs mer på denna länk: http://lilacsat.hit.edu.cn/?page_id=594

Info:

The FM transponder is expected to be a popular mode using amateur
radio FM walkie-talkies or mobile radios. The voice filter passband
is in the range of 300~3500 Hz. Below 300Hz below the sub-audio in
the form of baseband data emplying a CCSDS mode of 300 bps telemetry
data transmission.

The BJ1SI-1 APRS digipeater will immediately forward the received UI
frame in real-time.

The BJ1SI-2 APRS digipeater will allow delayed forwarding with a
user specified forwarding path and an ASCII coded time delay.

Uplink
——-
+ Frequency 145.985 MHz PL 67
+ Antenna 1/4 wavelength monopole, linear polarization
+ FM repeater Analog voice, no PL
+ APRS Digi AX.25 UI 1200 bps AFSK

Downlink
——–
+ Frequency 436.510 MHz
+ Callsign BJ1SI
+ Antenna Turnstile
LHCP (Forward, main lobe)
RHCP (Backward)

+ Telemetry CSP/CSP + AX.25 UI (Cube Satellite Space Protocol) was
originally developed by the AAUSAT3 team at the University of
Aalborg in Denmark and is an open source, lightweight network layer
protocol)
+ FM repeater Analog voice + CSP
+ APRS Digi AX.25 UI 1200 bps AFSK
+ Power 23/27 dBm

I dagarna (maj 2017) har det kommit ut ett antal nya Cubesats från ISS. Flera lyssnarrapporter har kommit redan. Det finns en video på utsläppet från ISS  här.

DK3WN Satblog har en aktuell status daterad 18 maj.

DK3WN har gjort några utmärkta frekvens-skisser över satelliterna:

Och från utsläppet den 18 maj följande:

Fler länkar och info finns nedan, från AMSAT-UK:

The second phase of QB50 CubeSats should be deployed from the
International Space Station over three days from May 23-25, 2017.

Built by university students and research organisations from 23 c
ountries around the world, the QB50 constellation aims to study the
lower thermosphere 200-380 km above the Earth.

11 QB50 CubeSats were deployed in the first phase and a further 17
will be deployed in the second phase. The beacons should be
activated about 30 minutes after deployment.

The QB50 CubeSats have downlinks between 435.7 and 438 MHz and
reports from radio amateurs are most welcome. Beacon data received
can be uploaded to a dedicated QB50 webpage at
https://upload.qb50.eu/

LilacSat-2 (ON02CN), which deploys at 0815 GMT on Tuesday, May 23,
is carrying a FM to Codec2-BPSK Digital Voice transponder, an APRS
digipeater and camera. Further information at
https://amsat-uk.org/2017/05/19/lilacsat-1-cubesat-iss/

Two of the ISS QB50 CubeSats deployed in the first phase, ON01FR
437.020 MHz and ON05FR 436.880 MHz, carry V/U FM transponders.
The uplink frequency for both is 145.860 MHz with 210.7 Hz CTCSS, see
http://site.amsat-f.org/2017/05/12/qb50-document-de-description-des–
telemesures-des-satellites-on01fr-on05fr/

List of QB50 CubeSats with Beacon format and frequency information
https://upload.qb50.eu/listCubeSat/

Keplerian Two Line Elements (TLEs) ‘Keps’ for new satellites launched
in past 30 days
http://celestrak.com/NORAD/elements/tle-new.txt

QB50 project
https://www.qb50.eu/
Twitter:
https://twitter.com/QB50Mission

On the deployment days radio amateurs and QB50 teams will be on the
#CubeSat IRC channel. Join the deployment chat at
http://irc.lc/freenode/cubesat

Don’t have a suitable 435-438 MHz receiver? Try listening online with the
SUWS WebSDR located near London
http://websdr.suws.org.uk/

On June 19, 2014 two precursor QB50 CubeSats were launched, QB50p1 and
QB50p2, which carried amateur radio transponders
https://amsat-uk.org/2014/06/19/successful-launch-of-amateur-radio-satellite-payloads/

Den  24 april 2017 är det 35 år sedan AMSAT-SM bildades på årsmötet SSA Oskarshamn! SM5IXE Thomas Johansson var föreningens första ordförande och ni kan läsa de första raderna vid bildandet nedan. Första numret av AMSAT-SM INFO kan ni även läsa här.

Jag har själv varit medlem i AMSAT-SM runt 25 år och har sett många “versioner” av föreningen. När vi var som mest aktiva fanns det en försäljningsfunktion, minst fyra nummer av medlemstidningen INFO gavs ut varje år och jag tror det var över 400 betalande medlemmar.

För ett par år sedan tog styrelsen beslutet att anpassa verksamheten till rådande miljö för amatörradioföreningar i stort. Vi förenklade så mycket som möjligt, la officiellt ner medlemstidningen, slopade tillfälligt medlemsavgiften och skapade en inriktning som en informerande förening. Och jag tror att AMSAT-SM i nuvarande form kommer att finnas i många år till!

Följ med oss i framtiden bland nya spännande satelliter!

Nya datum för de nya Fox-satelliterna enligt följande:

• Fox-1D will now ride to orbit on an Indian PSLV vehicle scheduled to launch from
  Satish Dhawan Space Centre in Sriharikota, India in late 2017.
• Fox-1Cliff will launch on Spaceflight’s SSO-A dedicated rideshare mission aboard
  a SpaceX Falcon 9 scheduled to launch from Vandenberg Air Force Base in
  California in late 2017 or early 2018.

Två nya CAMSAT-satelliter är planerade att komma upp den 31 mars, 2017 från Taiyuan till en 524 km bana med inclination av 42 grader.

Båda satelliterna kommer att ha 435/145 (U/V) 20 dBm (100 milliwatt) SSB/CW linjär transponder, en 2m CW 17 dBm (50 mW) telemetry beacon och en AX.25 4.8 kbps GMSK 20 dBm (100 mW) telemetry downlink.

Frekvenser har koordinerats av IARU Satellite Frequency Coordination Panel:

CAS-4A
• Linear transponder downlink 145.870 MHz, emission designator 20K0V8WWF, output power 20 dBm
• Linear transponder uplink 435.220 MHz
• CW telemetry beacon 145.855 MHz, emission designator 100HA1AAN, output power 17 dBm
• GMSK telemetry 145.835 MHz, emission designator 16K0F1DCN, output power 20 dBm

CAS-4B
• Linear transponder downlink 145.925 MHz, emission designator 20K0V8WWF, output power 20 dBm
• Linear transponder uplink 435.280 MHz
• CW telemetry beacon 145.910 MHz, emission designator 100HA1AAN, output power 17 dBm
• GMSK telemetry 145.890 MHz, emission designator 16K0F1DCN, output power 20 dBm