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Pi Day 2025
March 14 @ 2:00 pm – 9:00 pm EDT

Contact N3P on Pi Day, 2025 3.14.25
Time for Princeton Pi Day Celebration 2025! The DSRC celebrates “3.14” March 14th with an on-the-air festival of contacts with our special event callsign celebrating the number PI — N3P. Hope to talk to you then! Princeton’s most famous resident, Albert Einstein, celebrated his birthday as March 14th (was it real? we don’t know); Princeton NJ still celebrates his memory.
This year we scaled back our celebration to concentrate on our roots! Four stations around Princeton, New Jersey, USA will be sharing Pi Day wishes in honor of 3.14, Pi day 2025.
March 14 is important in the Princeton area because it was said that Albert Einstein’s birthday was on Pi Day, and he lived in Princeton later in life.
We will be using CW and SSB, two modes in existence during his lifetime. Listen for N3P near these HF frequencies:
14.031 CW, 14.314 USB
7.031 CW, 7.227 (Pi is approximately 22/7th) LSB
We may also be monitoring the David Sarnoff Radio Club repeater, 146.46 (see LINK) for local contacts, and maybe some other band/modes.
Early in his life, our club’s namesake David Sarnoff sent cw around the world, could it be that he too contemplated Pi? (later in life, David Sarnoff was president of RCA Corporation, where our club started)

N3P is listed in the ARRL Special Event database and on QRZ.com