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Pi Day 2025

March 14 @ 2:00 pm 9:00 pm EDT

Contact N3P on Pi Day, 2025

AI image of Albert Einstein with ham radio headphones... looking not very impressed.
If Albert Einstein had been a ham… what would he have looked like?

Time for Princeton Pi Day Celebration 2025! The DSRC celebrates 3.14 with an on-the-air festival of contacts with our special event callsign celebrating the number PI — N3P. Hope to talk to you then!


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.

Pi Day Special Event

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. As he sent telegrams around the world, could it be that David Sarnoff himself also contemplated Pi?

Yes, we will QSL with this year’s QSL card

We will be listed in the ARRL Special Event database as the day approaches

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