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Manufacturers of Time and Frequency Receivers

The following list of links to manufacturers of time and frequency receivers may be incomplete, and inclusion on the list does not imply endorsement by NIST. The manufacturers are listed alphabetically. Send corrections or additions to: timeinfo [at] (timeinfo[at]boulder[dot]nist[dot]gov) 

NOTE: We have provided links to these sites because they have information that may be of interest to our users. NIST does not necessarily endorse the views expressed or the facts presented on these sites. Further, NIST does not endorse any commercial products that may be advertised or available on these sites.

The time and frequency receiver products from each manufacturer have been categorized as follows:

GPSDOGPS Disciplined Oscillators
GPSCGPS Clocks and Time Sources
GPSBGPS OEM Modules and Board Level Products
VBCWWVB Clocks (wall clocks, wristwatches, etc.)
VBPMCWWVB Phase-Modulated Clocks (wall clocks, wristwatches, etc.)
CDMACDMA Disciplined Oscillators
Acurite   X  
American Time and Signal X X  
Arbiter SystemsXX    
Atomic Time   X  
Beaglesoft X X X
Bodet Time X    
Brandywine CommunicationsX X   
Braun   X  
BRG Precision X X  
C-MAX   X  
Casio   X  
Citizen   X  
CNS Systems X    
CXR NetworksXX   X
Digital Display Systems, Inc. X   X
EndRun TechnologiesX    X
ESE X    
EverSet Technologies   XX 
Extech Instruments   X  
Franklin Instrument X X  
Furuno Electric Co.X X   
Galleon X X  
Garmin XX   
General Electric X    
Gorgy Timing X    
hopf Elektronik GmbH XX   
Horita X    
Instrumentation Technology Systems X    
Jackson LabsX X   
Javad Navigation Systems XX   
Junghans   X  
Klockit/Primex   X  
La Crosse Technology   XX 
Lathem Time X X  
Magellan  X   
MarathonWatch   X  
Masterclock X    
Microchip Technology, Inc.XXX   
MTI-Milliren Technologies, Inc.  X   
Novatech Instruments, Inc.X     
Novatel XX   
ORCA Technologies XX   
Precision Test Systems LTDX     
Precitel XXX  
Sangean America, Inc   X  
Sapling X    
Schweitzer Engineering Laboratories, Inc. X    
Septentrio  X   
SkyScan   X  
Smiths InterconnectXX    
Spectrum Instruments, Inc.XXX   
Time & Frequency SolutionsX     
Time Tools X    
Topcon  X   
VWR International   X  
Vectron InternationalX X   
World Time Solutions X    
Created January 5, 2010, Updated April 1, 2024