Making QO-100 contacts from North America – A new challenge

QO-100 North America CertfificateIt is understandable that amateur radio operators in North America are disappointed that they cannot experience the fun of using QO100. However, although the footprint charts that have been published show that it is not possible, there have been good reports recently about the successful QO-100 expedition in Indonesia. In particular YC1HVZ/P successfully operated through the QO100 narrow band transponder from OI42DE at -1.2 degrees elevation!

QO-100 Indonesia Contact

This success suggests that it should be possible to make contacts through QO-100 from at least one North American location.

Examination of the footprint maps and the BATC / AMSAT QO100 dish pointing tool shows that the historic site at Signal Hill at St Johns on Newfoundland may be just the location from which to make the attempt.

QO-100 Newfoundland Contact

There would be a lot of challenges to be overcome!

Would the usual QO100 groundstation be sufficient or would a large dish and high power on the 2.4GHz be required? Could activity include operation of DATV through the wideband transponder? As signals from the ground station will probably be relying on tropospheric ducting for the first few miles, an alternative site, lower down, near the beach, might actually be better. What time of year, and what weather conditions might be most favourable? And perhaps the biggest unknown is whether the footprint maps for QO100 reflect the actual coverage or it is squinted towards the east by a couple of degrees?

Having been involved with supporting the QARS and AMSAT-DL since the inception of QO100, AMSAT-UK and BATC would like to establish this challenge and will award trophies as follows.

The station that succeeds in having the first 2-way QSO via the QO-100 narrow band transponder when operating from Newfoundland.

The station that succeeds in having more than 100 2-way QSOs via the QO-100 narrow band transponder when operating from Newfoundland.

The station that succeeds in having the first 2-way DATV QSOs via the via the QO-100 wide band transponder when operating from Newfoundland.

Subsequent operations from Newfoundland will also be eligible to apply for a special Certificate

Watch QO-100 North America Challenge talk at 2022 AMSAT-UK Colloquium

Details of tests being planned, and general questions should be submitted by email to
Claims for trophies and certificates should also be submitted to the same address.

QO-100 Award for contact from North America Word Document Here

First ever Svalbard QO-100 DXpedition JW100QO

Map of Svalbard showing the QO-100 station location

Map of Svalbard showing the QO-100 station location

A DXpedition to Svalbard (78° North) is planned for April 19-26 with the callsign JW0X. In addition to the five HF stations (FT8/FT4/RTTY/SSB/CW) the team will activate the first QO-100 satellite DX Station callsign JW100QO April 22-24.

Making the first ever QO-100 calls from Svalbard is the biggest challenge of this DXpedition. ON4CKM Cedric, ON4DCU Patrick and ON5UR Max will make a rugged snowmobile ride of almost 100 km in temperatures of -20° – 25° Celsius to reach their goal. Kapp Linné is the only place in the area that allows a view of the QO-100 satellite at only 3° above the horizon. Svalbard also lies on the edge of the satellite area (footprint), which makes the challenge even greater. We want to give as many radio amateurs as possible the opportunity to work this first QO-100 DXpedition. For this unique challenge we also have a special callsign JW100QO.

Further info at:

Svalbard QO-100 JW100QO April 22-24

Svalbard JW0X April 19-26

QO-100 geostationary amateur satellite transponder provides coverage from Brazil to Thailand, see

New EMF Regulation and QO-100 satellite / Microwave operation

Es'hail-2 Qatar-OSCAR-100Ian GM3SEK is giving an online talk on the application of the RSGB-Ofcom Calculator to Microwaves and QO-100 satellite operation on Saturday, October 16, at 1230 GMT (1:30pm BST)

John G3XDY, Secretary UK Microwave Group, writes:

As I expect you are aware, UK stations must have Electromagnetic Field (EMF) assessments in place for operation above 110 MHz from 18th November 2021. Some RSGB guidance on EMF is here:

The RSGB has been developing a tool that incorporates the Ofcom EMF Calculator but extends the models to include single and multiple Yagis plus various sizes of dish antennas, and takes account of the directivity of the antenna.

Ian GM3SEK, a key member of the team that developed the spreadsheet tool, will be talking about its application to Microwaves and QO-100 operation on 16th October at 13:30pm, in a joint BATC/UK Microwave Group presentation during the BATC Convention.

Registration is not required, to view the talk just go to

Full details of the BATC CAT21 program are available here

This is an important topic for all that operate on VHF and above, and Ian will dispense invaluable practical advice on how to assess your dishes and Yagis in the microwave bands. Not to be missed!

Antarctica: DP0GVN QO-100 antenna destroyed, rebuild planned for 2022

AWI Neumayer Station III Antarctica - image from AMSAT-DL

AWI Neumayer Station III Antarctica – image from AMSAT-DL

AMSAT-DL reports the antenna used by DP0GVN in Antarctica for the QO-100 geostationary satellite amateur radio transponder is completely destroyed.

According to the Alfred-Wegener-Institute (AWI), a severe winter storm hit Atka Bay (Antarctica) at the end of last week. At Neumayer Station III, about 20 kilometres away, wind speeds of max. 94.9 knots (175.7 km/h) were recorded as a minute average during the night from 13 to 14 August. The strongest gust was 112 knots (207 km/h). This is by far the highest wind speed in recent years.

Unfortunately, the satellite antenna for the geostationary QO-100 amateur radio satellite was also completely destroyed during the storm, despite the weatherproof radome, so no school contacts with DP0GVN can take place until further notice. AMSAT-DL and AWI hope to erect a new antenna early next year, in particular to continue the very successful contacts with schools.


GB2RS News available on QO-100 satellite from this Sunday

Es'hail-2 Qatar-OSCAR-100The RSGB has announced that their popular weekly GB2RS news broadcast will now be available via the QO-100 amateur radio transponder on the geostationary satellite Es’hail-2.

QO-100 provides continuous coverage from eastern Brazil to as far west as Thailand. There are two amateur transponders, one for Narrowband modes such as SSB and FT8 and the other for digital amateur television (DATV).

The RSGB website says:

“GB2RS can now also be heard via the QO-100 amateur radio satellite. The transmission is provided by Keith, GU6EFB at 0800UTC, using upper sideband on 10489.900 MHz, which is in the mixed-mode section of the narrowband transponder. QO-100 is a geostationary satellite with a footprint that covers Europe, Africa and India, so this news bulletin is a specially-adapted international version. The RSGB would like to thank AMSAT-DL for their kind cooperation in making this broadcast possible.”

If you do not have 10 GHz receive capability you can still listen to the broadcast on the AMSAT-UK and BATC WebSDR located at Goonhilly, see


QO-100 info

RSGB awards Louis Varney Cup to Dave Crump G8GKQ

Dave Crump G8GKQ

Dave Crump G8GKQ

At the RSGB AGM held on Saturday, April 24, 2021 the Society awarded the Louis Varney Cup for advances in space communications to Dave Crump G8GKQ.

Dave accepts this award as Chair of the British Amateur Television Club. His leadership of the BATC community, both in the UK and overseas, has been instrumental in enabling the QO100 satellite wideband transponder to be fully utilized with many new DATV systems being developed since the launch of the spacecraft.

This award acknowledges the exciting and significant contributions made by many members of the BATC, both in terms of software and hardware.

RSGB 2021 Awards and Trophies

Info on the QO-100 Geostationary satellite transponders