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Es'hail 2 (a.k.a. Qatar-OSCAR 100 or QO-100[4]) is a Qatari satellite, launched aboard a SpaceX Falcon 9 rocket on November 15, 2018.[5][6] Es'hail 2 was built by Japan's Mitsubishi Electric company, and operates at 26° East longitude along a geostationary orbit to provide direct-to-home television services in the Middle East and North Africa region.[7] The satellite features 24 Ku-band and 11 Ka-band transponders to provide direct broadcasting services for television, government and commercial content distribution.[8] In addition to commercial services, the payload of Es'hail 2 includes a linear transponder with a bandwidth of 500 kHz and 8 MHz for the amateur radio satellite service, with uplink on 2.4 GHz (13-cm band) and downlink on 10.45 GHz (3-cm band).[9]

Es'hail 2
Launch of Falcon 9 flight 63 carrying Es'hail-2
Mission typeCommunications
OperatorEs'hailSat
COSPAR ID2018-090A
SATCAT no.43700
Mission duration15 years (planned)
Spacecraft properties
BusDS2000
ManufacturerMitsubishi Electric
Launch mass5,300 kilograms (11,700 lb)
Start of mission
Launch date15 November 2018 (2018-11-15Z), 20:46 UTC
RocketFalcon 9 Full Thrust
Launch siteKennedy LC-39A
ContractorSpaceX
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude26° East[1]
Inclination0.033[2]
Epoch60[3]
 

Amateur radio transponders


Transponder U/L FREQUENCY [MHz] D/L FREQUENCY [MHz] LO [MHz] BW [MHz]
Pol Begin Center End Pol Begin Center End
NB RHCP 2400,00 2400,245 2400,5 V 10489,50 10489,745 10490,0 8089,5 0,500
WB RHCP 2401,5 2405,5 2409,5 H 10491 10495 10499 8089,5 8
References: [10]

"NB" Transponder (narrow band)


Linear Transponder for low power narrow bandwidth voice, morse and digital communication

The narrowband transponder is intended for conventional analogue and narrowband digital signals.

No transmissions should be made beyond the nominal edges of the transponder passbands. In particular, no operation should take place below the lower beacon nor above the upper beacon.

No uplinks should result in downlink signals that are stronger than these beacons. In the event that such signals are detected, they will be marked by a “LEILA” (LEIstungs Limit Anzeige, English: power level indicator) siren. When they have been marked by “LEILA”, operators should immediately reduce their uplink power (ERP).

No FM transmissions should be made to Es’hail-2 as these would use excessive power and bandwidth.

Uplink [MHz] Downlink [MHz] Available bandwidth [kHz] Notes
do not transmit 10489,500 – 10489,505 5 Lower CW beacon
2400,005 – 2400,040 10489,505 – 10489,540 35 CW only
2400,040 – 2400,080 10489,540 – 10489,580 40 Narrowband digimodes (500 Hz max. BW)
2400,080 – 2400,150 10489,580 – 10489,650 70 Digimodes (2700 Hz max. BW)
2400,150 – 2400,245 10489,650 – 10489,745 95 SSB only (2700 Hz max. BW)
do not transmit 10489,745 – 10489,755 10 Middle beacon, 400 Bit/s BPSK
2400,255 – 2400,350 10489,755 – 10489,850 95 SSB only (2700 Hz max. BW)
2400,350 – 2400,495 10489,850 – 10489,995 145 Mixed modes (2700 Hz max. BW) & special purpose
do not transmit 10489,995 – 10490,000 5 Experimental beacon, CW and other modulations

"WB" Transponder (wide band)


Linear Transponder for Digital Amateur Television (DATV) and other highspeed data transmissions. First DATV transponder in space.

All uplink transmissions should use the minimum power possible. QPSK transmissions should have a downlink signal with at least 1 dB lower power density than the Beacon – the web-based spectrum monitor enables users to set their uplink power to achieve this. Transmissions with symbol rates of less than 333 kS using 8PSK, 16 APSK or 32 APSK should use the minimum power density required to achieve successful reception.


Amateur Radio Operators


Well over 130+ amateur radio operators have used the amateur radio transponder in the first few weeks of operation.[11]


See also



References


  1. "Es'hail-2 / AMSAT Phase 4-A – AMSAT-Deutschland". Archived from the original on 2019-01-06. Retrieved 2019-01-06.
  2. "ESHAIL 2 NORAD 43700 Satellite Tracking".
  3. "ESHAIL 2 NORAD 43700 Satellite Tracking".
  4. Stoetzer, Paul. "Es'hail-2/P4A Designated Qatar-OSCAR 100 (QO-100)". Amsat. Amsat. Retrieved 21 July 2022.
  5. "SpaceX on Twitter". Twitter. Retrieved 2018-10-17.
  6. "SpaceX on Twitter". Twitter. Retrieved 2018-11-15.
  7. Clark, Stephen. "SpaceX selected for launch of Qatari satellite – Spaceflight Now". Retrieved 2016-03-28.
  8. "Es'hail-2 Communication Satellite". Retrieved 2019-01-06.
  9. ""Es'hail-2 Geostationary Satellite Carrying Amateur Radio Payload Launched"". American Radio Relay League. 2018-11-15.
  10. "Es'hail-2 / AMSAT Phase 4-A". Retrieved 2019-01-06.
  11. "Es'hail-2 QO-100 Callsign Log". Retrieved 2019-03-29.

На других языках


[de] Es’hail 2

Es’hail 2 (auch Es’hailSat 2, arabisch سهيل سات-2, AMSAT-Bezeichnung: AMSAT P4-A) ist ein Fernseh- und Amateurfunksatellit der Es'hailSat Qatar Satellite Company aus Katar.[1] Er ist der erste Amateurfunksatellit in einem geostationären Orbit.[1]
- [en] Es'hail 2



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