Callisto is pleased to welcome a new member to the team at Callisto France. David Liermann joined us as Sales and Business Development Manager. David's immediate task is to push the sales of our LNA products in order to implement the strategy of diversification of the business into the wider commercial SATCOMS and EO areas. He has also plans to develop new business in the area of systems integration of ground stations. David comes to Callisto with over 20 years experiences in the SATCOMs area working in both the USA and Europe.
Callisto recherche un technicien électronique, électrotechnicien ou mécanique polyvalent pour intégrer l'équipe technique composée de 5 ingénieurs et un technicien pour son site de Villefranche de Lauragais.
Callisto is seeking to recruit a satellite communications engineer experienced in satellite Ground Stations to join a team of engineers working in Darmstadt Germany.
Candidates must be University qualified to at least first degree level and with at least 5 years professional experience in relevant to the areas of expertise listed below.
Callisto is pleased to announce that it has been awarded a contract by
Thales Alenia Space, Toulouse to supply Low Noise Amplifiers (LNAs)
operating in the 25.5 to 27 GHz Band for the Meteosat Third Generation
(MTG) project. The LNAs will be installed in four antennas making up
the Missions Data Acquisition ground stations for MTG. The order
comprises the LNAs as well redundancy switching components and
associated Controller/Power Supply units.
Callisto is seeking to recruit an engineer to take charge of sales of RF products for SATCOM applications. The ideal candidate should be qualified to degree level in a relevant engineering subject and have at least five years experience in the SATCOMs industry, of which two years in a sales or marketing role. Reporting to the CEO he/she will be responsible for the commercialisation of RF products for ground stations which Callisto has been developing over the past five years. .
In order to improve the G/T of ESA Deep Space Antennas (DSA) by 2dB, a new cryogenic receiver will be developed in collaboration with the University of Cantabria.
Callisto est amené à développer une carte de contrôle pour un atténuateur RF digital. Cette carte permettra de régler le niveau d'atténuation de l'atténuateur. Cette carte devra aussi comporter une interface avec l'utilisateur (contrôle et surveillance).
Le stage démarrera par une phase d'étude puis se poursuivra avec la réalisation d'une carte prototype. Suivant l'avancement du stage et le niveau du stagiaire, une mise en boitier de cette carte pourra être envisagée.
Callisto is pleased to announce that the manufacture of the prototype of a new "Compact", zero maintenance cryogenic receiver including the Caltech designed QRFH feed has started!
This new RF receiver is being developed to meet the VGOS specification for VLBI. It could also be used for more general radio astronomy applications.
The design is focused on low maintenance, very low power consumption with Noise Temperature performance that meets the VGOS requirements. This is a state-of-the-art piece of equipment for telescopes all over the world but with particular interest for those operated in remote locations where energy costs are high and maintenance logistics is particularly complex and expensive.
The preliminary design work, de-risking activities and detailed design work completed in 2014 have produced good results with the completion of resistance and leak tests on a large vacuum window and cryogenic and RF tests that showed correct operations of the QRFH feed and LNAs at cryogenic temperatures.
The expected performance of the compact QRFH cryogenic receiver is confirmed but more importantly the de-risking work showed that the receiver can be operated at a better noise temperature than initially expected.
At the end of 2014 Callisto has delivered three additional X Band Compact maintenance free cryo LNAs.
These LNAs have 18K of Noise temperature between 8 and 8.5GHz.
To learn more on Maintenance free Cryo LNA follow this link
Following this link: