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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] 

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:

GPSDO GPS Disciplined Oscillators
GPSC GPS Clocks and Time Sources
GPSB GPS OEM Modules and Board Level Products
VBC WWVB Clocks (wall clocks, wristwatches, etc.)
VBPMC WWVB Phase-Modulated Clocks (wall clocks, wristwatches, etc.)
CDMA CDMA Disciplined Oscillators
Accubeat X X        
Acurite       X    
American Time and Signal   X   X    
Arbiter Systems X X        
Atomic Time       X    
Beaglesoft   X   X   X
Bodet Time   X        
Brandywine Communications X   X      
Braun       X    
BRG Precision   X   X    
C-MAX       X    
Casio       X    
Citizen       X    
CNS Systems   X        
CXR Networks X X       X
DICOM X          
Digital Display Systems, Inc.   X       X
EndRun Technologies X         X
ESE   X        
EverSet Technologies       X X  
Extech Instruments       X    
Fluke X          
Franklin Instrument   X   X    
Furuno Electric Co. X   X      
Galleon   X   X    
Garmin   X X      
General Electric   X        
Gorgy Timing   X        
hopf Elektronik GmbH   X X      
Horita   X        
Instrumentation Technology Systems   X        
Jackson Labs X   X      
Javad Navigation Systems   X X      
Junghans       X    
Klockit/Primex       X    
La Crosse Technology       X X  
Lathem Time   X   X    
Magellan     X      
MarathonWatch       X    
Masterclock   X        
Meinberg X X X X    
Microchip Technology, Inc. X X X      
MOBATIME X X        
MTI-Milliren Technologies, Inc.     X      
Novatech Instruments, Inc. X          
Novatel   X X      
Novus X          
ORCA Technologies   X X      
Oregon Scientific       X    
Oscilloquartz X X X      
Precision Test Systems LTD X          
Precitel   X X X    
Quartzlock X          
Sangean America, Inc       X    
Sapling   X        
Schweitzer Engineering Laboratories, Inc.   X        
Septentrio     X      
SkyScan       X    
Smiths Interconnect X X        
Spectracom X X X      
Spectrum Instruments, Inc. X X X      
Tekron X X X      
Time & Frequency Solutions X          
TikWatches   X        
Time Tools   X        
Topcon     X      
Trimble X X X      
VWR International       X    
Vectron International X   X      
World Time Solutions   X        
FEI-Zyfer X X X      
Created January 5, 2010, Updated September 7, 2023