Precise Time and Frequency, Inc. ( was founded in 2002 by Daniel Whelan and David Briggs. PTF products are widely used in communications, location services, and timekeeping functions. They deliver the precision and reliability needed for sensitive applications in both commercial and military fields. The combination of Briggs’ electronics engineering background and Whelan’s experience in business and finance came together to create a truly unique company. Their mission is to provide customers with excellent performance at an affordable price.

GPS and Time Code Products

Time and Frequency Distribution