MIT Trip

David AD8Y, Kristina KD8OXT and Nathaniel KB1QHX traveled to Boston this January to present a lecture on modulation as part of the Independent Activity Period series on radio science presented by the MIT amateur radio club, W1MX. The handout from the lecture can be downloaded here.

We visited W1MX’s radome on the roof of the Green Building:

Daniel Sheen, KC1EPN, gives students a tour of the Green Building shack and antenna farm after a lecture.

 

Nathaniel KB1QHX, Kristina KD8OXT, and Daniel KC1EPN, at the companion antenna farm on the Walker Memorial Building.

David AD8Y, preparing for the lecture.

 

Nathaniel KB1QHX, with Linn W. Hobbs, former materials science professor at CWRU.

We also made time to take in some other MIT sights, including the MIT Electronics Research Society…

…the MIT Hobby Shop….

…and the lab of Dr. Harold Edgerton.

Many thanks to W1MX for inviting us, especially Daniel Sheen KC1EPN. It was a great visit!

Advertisements

MIT IAP with W1MX – Livestream

W8EDU is in Boston this week giving a presentation for our friends at W1MX as part of MIT’s Independent Activities Period.

Here’s a livestream of Dr. Phil Erickson’s talk, “An Introduction to Radio Experimentation, Technology, and History”: https://www.youtube.com/watch?v=rWuLy0IMScM

Here’s the program: http://student.mit.edu/iap/ns313.html

Tune in tomorrow at 5:30 for our talk on Fourier transforms and witchcraft!

Giving Tuesday

Consider donating to W8EDU for Giving Tuesday.

Three simple steps:

1) Click this link: https://www.givecampus.com/snlrle

2) Designate your donation as “Other” and type in “Case Amateur Radio Club (W8EDU)”.

3) Donate!

Every inch helps fund equipment, classes and conferences to help our students become better hams and better engineers. You can read about our projects at w8edu.wordpress.com.

WWV Data Collection

Here’s a plot of the error between the measured frequency of WWV and a temperature controlled crystal oscillator (not NIST-traceable, but temperature stable and verified within 200 MHz). WWV transmits a clock frequency, set by a cesium fountain (a bank of cesium clocks), which is accurate to within 1 part in 10^16. We receive the transmission here in Cleveland, via several ionospheric hops, and the path length changes with time and space weather. We can see these changes in path length by measuring the difference between the received clock from WWV and our local oscillator. When we plot it clearly shows sunrise and sunset here and in Colorado. Graph by Skylar KD9JPX.

unnamed.png