The 100 MHz and 20 MHz signals were generated by a hydrogen maser
and used to modulate the optical signal transmitted from the control room at one antenna (DSS-13) through the control room of a remote antenna (DSS-12) and back to DSS-13.
Tender issueH2020 WP15 H001 - Enhanced Passive Hydrogen Maser
(PHM) Framework: This framework will implement activities covering the development of the enhanced on-board Passive Hydrogen Maser
(PHM) Clock intended for consideration under Galileo 2nd Generation considering obsolescence technology enhancement miniaturisation and improved reliability and including relevant testing.
The Symmetricom Technology Realization Center, a worldwide leader in the development and production of precision hydrogen maser
and cesium beam and rubidium gas cell frequency standards, as well as high performance quartz oscillators, is the recipient of the Massachusetts Workforce Training Fund, a state fund enacted into law in July 1998 and financed entirely by Massachusetts employers.
Contract award notice: delivery of an active hydrogen maser
Today the GNSS clock error requirements are comfortably met with the current on-board atomic clock technologies (Rubidium Atomic Frequency Standard (RAFS) and Passive Hydrogen Maser
(PHM)) whose parameters are refreshed every 100min to 1 day.
Contract notice: Delivery of an active hydrogen maser
Contract award: Procurement of active hydrogen Maser
Contract notice: Active Hydrogen Maser
Sg 115813 PW/SG.
Solicitation: Steerable clock system consisting of 75001-109-lpn hydrogen maser
with low phase noise option and 85000-502 aux.
Announcement of competition: Acquisition of Active Hydrogen Maser
Maintenance contract for 6 active hydrogen maser
series EFOS C BKG for 3 years.
Contract award notice: Lieferung eines Active Hydrogen Masers