Join Bradshaw Lupton, K1TE, as he presents “GPS-NTP $20, 20 Nanosecond Home Time Server, Frequency Beacon” on Saturday, August 15, 2026 in Duchess / E1 at the 2026 Northeast HamXposition.
“This work explores an alternative to GPS-based timing, using millennia-proven astronomical timekeeping – achieving ~10 ms accuracy at home by observing star and planet transits. With help from ChatGPT, I’ve been developing both the software and the experimental methods behind this approach. The techniques, tools, and lessons learned make up roughly half of this shared talk. Visit this website the week before to purchase the materials you will need for this session: https://lupton.us/VU3CER VU3CER GPS-NTP Stratum Zero What is it? Improved from last years HAMX: a true, slick, no-solder Quick GPS timing, NTP, and professional frequency-standard project.”
Dhiru Kholia was first licensed as VU3CER in 2019. He received a BE degree in Electronics & Telecommunication from Pune University in 2006. He then pursued a career in software security engineering with various MNC firms. He became interested in electronics again after a long gap due to his growing passion for hardware security. Besides amateur radio, he enjoys table tennis, chess, releasing miscellaneous projects on GitHub, and reverse-engineering software and hardware stuff.
Bradshaw Lupton, K1TE, was licensed as WA2IVF in 1968. He was an engineer at Honeywell and Polaroid for 33 years, and a physics and chemistry teacher in the Boston area for 11 years. Bradshaw advises the Sandwich STEM Academy and has developed WSPR/FT8 STEM classes for the Chatham Marconi RCA museum. His STEM students are learning the power of WSJTX digital with 3.3v and 1/100 watt making it, occasionally, from Buzzards Bay, Massachusetts to Melbourne, Australia.
ORDER THIS LIST AND BRING TO OUR CLASS AT HAMXPOSITION Marlborough https://www.amazon.com/hz/wishlist/ls/IMM7FFGG07RL?ref_=list_d_wl_lfu_nav_1 which builds two devices. So bring a friend, or build two. the class is fun and free. Bring a 435 mhz walkie talkie to prove that your device is actually +/- 20 billionths of a second.”