Go Go Gadget Box

The Case Alumni Association generously provided us with funding for a “Go Box” in September. Today it has come to life assembled.


All the major components are in the box here, but not completely secured.

Various parts of it have been “tested” at various points leading up to today.  The radio was put through it’s paces in an on air contest within days of our receiving it.

We had been using a transmitter from the estate of Jack Goldfarb, W8WGO, when we discovered the known failure mode… Apparently running the radio too long causes the main knob shaft encoder grease to fail and bind.  This has since been fixed with assistance from John Gibbons, N8OBJ, and the Sears Lab.

The box, battery, radio (again) & iambic Morse Code key were put through there paces at the Engineering Challenge Carnival:


Young radio operator in training…

Some of the smaller parts are not yet install in the go box.  This includes the Morse key.  They are non-essential, unless someone absolutely needs to send Morse Code, but will be installed soon.  However all the major components are now installed and secured.


Go Box “Tilt Test”.

The Go Box has wheels which will allow us to roll it where it needs to go.  However the handle for wheeling the box stows in the bottom, so to roll it the entire thing ends up rotated 90 degrees.  The tilt test was to ensure that all the equipment would stay put when it was rotated for travel.

The box has a single power input that will run everything from AC/commercial power.  The power input for the box is the gray cable in the front of the Tilt Test image.  However, it is worth noting that the box is not plugged in even though the radio is running.

The entire box can run without AC/commercial power.  In both images the radio is running on the battery installed in the back of the box.  The laptop will happily run off of its internal battery, and will be getting an option to be powered off the power supply battery arrangement as well.

There are some parts that still need adjustment/refinement.  Also we’ll need a way to contain the various bits and pieces that inevitably will accumulate in/with the box.

-Nathaniel KB1QHX


HamSCI Day 2

The HamSCI conference wrapped up today with further excellent talks. We particularly enjoyed presenting our phasor demo and visiting K2MFF.

The backs of our heads made the local news

Lots of research to do and stuff to build. See you again next year!

Phasor Analysis and Baba Yaga’s Hut

Click here to download documentation on the current revision of our demo for the 2018 HamSCI conference. This is a version of the phasor demo developed for this semester’s modulation course, EECS 351.

Abstract:  A laboratory exercise is presented for the examination of analog signals simultaneously in the time, frequency and phasor domains, as well as demodulated audio. A simulated transmitter, transmission medium, receiver front end and in-phase/quadrature demodulator are constructed using function generators, two oscilloscopes, and RF components. In this initial exercise, the focus is on the examination of an AM signal, which students vary in modulating frequency, amplitude, depth, etc. while making guided observations of the effects on each representation. This develops experiential understanding and intuition for examination of AM signals in the 3 domains, and offers a kinesthetic demonstration of concepts typically presented as blackboard exercises. The demonstration is extensible to frequency and phase modulation and QAM, and may form the basis for a semester course in modulation. The exercise has been successfully deployed in a junior-level electrical engineering class focusing on signal modulation. This work is supported by the Electrical Engineering and Computer Science department of Case Western Reserve University, through the Robert E. Collin Radiofrequency and Communications Laboratory and the Case Amateur Radio Club, W8EDU. Educational canon, including bill of materials, setup instructions, and lab exercises for this demonstration, is available at cwrucommlab.wordpress.com.

HamSCI, Day 1

After a long but rewarding drive to the Garden State, we have enjoyed the first day of the HamSCI conference. Data from the Solar Eclipse QSO party is nearing publication, and the talks today were filled with many pretty graphs. Our gracious hosts at the New Jersey Institute of Technology have promised to show us their ham shack tomorrow, and we will demonstrate Baba Yaga’s perspective on the argand plane with an apparatus adapted from our lab exercises in EECS 351. Many thanks to Nathaniel Frissell W2NAF for putting this wonderful event together.

-Kristina KD8OXT; Rachel AC8XY; Nathaniel KB1QHX; Paula KD9GYF


FB at HackCWRU

Was pleased to run into a fellow ham – Jonathan N8JWS of the Youngstown State University amateur radio club, K8YSU – in the typing competition at the CWRU Hackathon this evening. Many thanks to N8JWS for letting me use his keyboard in the contest. We’ll soon be logging contacts on Cherry switches.

-Kristina KD8OXT

“FB” = “Fine Business”

Making Contacts

School Club Round-Up is going well this week. It’s a particular joy to make UHF/VHF contacts with hams around campus. If you’ve gotten your callsign with us, call on 146.55 or 432.1 MHz. We’re listening!

School Club Roundup!

School Club Roundup is coming up Feb. 12-16, and as ever W8EDU is looking forward to making contacts both on the air and with new participants! If you need to get in touch, the shack phone number is (216) 368-3579. There are a lot of ways to be involved, so come drop by (directions here).

-Skylar, KD9JPX