Simple dual band dish feed for Es’hail-2 / QO-100

DKARS April 2019 front coverThe April 2019 issue of the free DKARS magazine features an article in English – Simple dual band dish feed for Es’hail-2 / QO-100 by Mike Willis G0MJW, Remco den Besten PA3FYM and Paul Marsh M0EYT.

Their article, on pages 18-23, describes an easy to build 2.4 and 10 GHz dish feed, using commonly available materials, for Es’hail-2 / QO-100 deployment. The feed consists of a LHCP patch antenna for 2.4 GHz and a waveguide feed for 10 GHz, to be placed in the focal point of commonly available and cheap offset satellite TV dishes with f/D’s of around 0.6

Download the full magazine PDF from https://dkars.us13.list-manage.com/track/click?u=2a0602da7add78cfc4cee370d&id=f8424212ae&e=ca64a74f86

Dutch Kingdom Amateur Radio Society (DKARS) http://www.dkars.nl/index.php?page=magazine_uk

Additional information on Es’hail-2 /QO-100 can be found at
https://amsat-uk.org/2019/02/10/qatar-oscar-100-web-receiver-now-live/

Spain: Authorization for 2.4 GHz operation

Es'hail-2 Qatar-OSCAR-100Spain’s national amateur radio society URE reports the regulator has agreed to allow amateur use of 2400.050 to 2409.500 MHz to access the E’hail-2 / QO-100 geostationary satellite.

A Google translation of the URE announcement reads:

Since the State of Qatar sent the geostationary satellite Es’hail-2, the first of its kind to be used by radio amateurs, to space on November 15 of 2018, the URE satellite (AMSAT) raised the possibility of requesting the Administration the free use of the entire segment granted for radio amateurs in Spain and not only segment 2316-2332 MHz.

The Administration, responding to the request submitted by the URE, has developed the present resolution, which authorizes until September 26, 2019, to the holders of radio amateur authorizations, the emission of the amateur radio satellite service from 2400.050 to 2409.500 MHz. For single-sideband telephone communications, with a maximum eirp of 1500 watts, from authorized amateur radio stations located anywhere in the national territory.

The resolution of the Secretary of State for Digital Progress
https://www.ure.es/images/noticias/generales/RESOLUCION-Es-hai.pdf

URE in Google English https://tinyurl.com/SpainURE

Es’hail-2 QO-100 https://amsat-uk.org/satellites/geo/eshail-2/

Ham radio geostationary satellite talks at Martlesham

BT Adastral Park - credit BT

BT Adastral Park – credit BT

This year’s premier Amateur Radio Microwave Event will take place at BT Adastral Park, Martlesham, Suffolk on April 13-14, Everyone is welcome to attend and entry is free but you must pre-register.

The talks are being held on the Sunday, April 14, and they include:
• Equipment for the Es’Hail-2 / QO-100 narrowband transponder by David Bowman G0MRF
• Es’Hail-2 / QO-100 DATV wideband transponder by Noel Matthews G8GTZ
• Building your first Transceiver with GNU Radio by Heather Lomond M0HMO
• From Death Rays to Dinner: A Brief History of Microwave Engineering by William Eustace M0WJE

Entry is Free but you must Register in advance due to BT’s site access policy. Full details and booking at http://mmrt.homedns.org/

UK Microwave Group
https://microwavers.org/
https://twitter.com/UKGHZ

Groups IO UKMicrowaves https://groups.io/g/UKMicrowaves

Space meeting to be streamed via ham radio geostationary transponder

Es'hail-2 Qatar-OSCAR-100The 2nd Amateur Radio Space Meeting, taking place in Nanterre, Paris, March 9-10, will be streamed live via the Digital Amateur TV transponder on Es’hail-2 / QO-100 geostationary satellite.

A Google translation of the AMSAT-Francophone post says:

AMSAT-Francophone and Electrolab have deployed a ground station to operate the QO100 transponder in DATV.

The “broadcast DATV” team led by Yannick Avelino and with the support of Evariste F5OEO has developed the station that will broadcast live the conferences of the second amateur radio space meeting March 9-10, 2019. The team was in contact with AMSAT-DL and AMSAT-UK for permission to operate the satellite during these days.

Source http://site.amsat-f.org/2019/03/07/rencontre-spatiale-du-9-10-mars-2019-conferences-diffusees-en-direct-via-le-transpondeur-qo100/

Meeting information and Schedule of talks
http://site.amsat-f.org/2019/02/16/deuxieme-rencontre-spatiale-radioamateur-9-et-10-mars-2019-agenda-des-deux-journees-mis-a-jours-reservez-vos-places/

2.5 milliwatt OPERA signal via Es’hail-2 geostationary satellite

Es'hail-2 Qatar-OSCAR-100Markus Vester DF6NM successfully used the digital mode OPERA to send a 2.5 milliwatt signal on 2.4 GHz through the amateur radio transponder on the Es’hail-2 / QO-100 geostationary satellite.

Graham G0NBD writes about the contact on Digital Radio Groupsio.

On March 3, 2019, Markus started using 250 milliwatts on 2.4 GHz into a 60 cm dish pointing at Es’hail-2. The downlink signal was received via the AMSAT-UK and BATC 10 GHz WebSDR at Goonhilly in Cornwall by Peter Knol PA1SDB.

Markus then reduced power to just 2.5 milliwatts and the signal was still receiveable.

See Digital Radio Groupsio post at
https://digitalradio.groups.io/g/main/message/50861

OPERA was developed by Jose EA5HVK and can be downloaded from
https://rosmodem.wordpress.com/

Es’hail-2 / Qatar OSCAR-100 web receiver now live
https://amsat-uk.org/2019/02/10/qatar-oscar-100-web-receiver-now-live/

DF6NM to PA1SDB using OPERA via Es'hail-2 on March 3, 2019

DF6NM to PA1SDB using OPERA via Es’hail-2 on March 3, 2019. Note Microwavers spots site doesn’t display satellite frequencies correctly

Digital ATV co-ordination on Es’hail-2

Narrowband DATV image (150 kHz bandwidth) via QO-100 Noel G8GTZ Feb 14, 2019 at 0950 GMT

Narrowband DATV (150 kHz bandwidth) via QO-100 sent by Noel G8GTZ Feb 14, 2019 at 0950 GMT

AMSAT-DL has agreed to a proposal by the British Amateur Television Club (BATC) for the use of the bottom 100 kHz of the wideband transponder (10491 – 10491.1 MHz) for ATV co-ordination purposes.

The announcement on the BATC Forum says:

This is on an experimental only basis and stations must keep their power levels to a minimum and certainly not exceed power levels greater than 15dB above the noise floor as shown on the Goonhilly spectrum monitor.

This is sanctioned on an experimental only basis and AMSAT-DL reserve the right to move the WB beacon towards the band edge or implement DVB-S with a wider rolloff which would render the frequencies unsuitable for this purpose.

So another challenge but should be manageable and prove a useful facility although we do see the chat being the major tool for reports and contacts.

73 Noel G8GTZ

BATC Forum Announcement https://forum.batc.org.uk/viewtopic.php?f=101&t=5923

Es’hail-2 WebSDR https://eshail.batc.org.uk/

Es’hail-2 Wideband amateur radio transponder operating guidelines
https://amsat-dl.org/en/p4-a-wb-transponder-bandplan-and-operating-guidelines

Es’hail-2 amateur radio information
https://amsat-dl.org/en/eshail-2-amsat-phase-4-a

See the Satellite Forum for additional information https://forum.amsat-dl.org/