Hans Schroeder

Hans Schroeder

"We are busy getting the MSOE Amateur Radio Club back on the SGA list after we slipped off..." - 2 years ago
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Name: Hans Schroeder
User Type: Faculty/Staff
Biography: I was born in Cologne, Germany (1929) and came to the US after WWII as a result of chance encounters connected with my work at HQ EUCOM in Frankfurt.

It happened that while I was a student at MSOE (1951) I was arrested by a US Marshal for being an illegal alien, but by and by it all got straightened out. --- I had to spend a night in Canada and immigrate once more by walking across the bridge from Windsor Ontario to Detroit, Michigan.

That started the five years after which an immigrant can apply for citizenship - and qualify for a Radio Amateur license and call sign. -- By then I had graduated and was working at NCR, Dayton, OH.

At NCR I was fortunate to be the first EE hired in the Research Division which gave me the opportunity to attend some high-level meetings.

I particularly remember the days when the basic specifications for the NCR 304 computer were set and a key question was "Will there ever be a one-dollar transistor?" If not, we stay with tubes.

Meanwhile, in the Research Division we explored many different ways to perform logic and memory functions. There were the tiny ferrite cores (logic and memory), ideas for using electroluminescence together with photoconductors - "EL-PC" - with which we tried to build gates and flipflops using silkscreen techniques. We experimented with hydraulic logic (using tiny moving parts), we grew ferroelectric crystals (Barium titanate) for memory, I spent three weeks at MIT to learn about superconductivity (Cryotron), and like other companies we explored pneumatic logic using the Coanda effect (pressure air for flipflops and gates) and talked to Corning Glass about manufacturing parts for that. A Japanese Inventor, Eichi Goto tried to sell us his invention, the Parametron, a subharmonic oscillator; we visited with the inventor of the integrated circuit, although nobody then had any idea what this clumsy thing would turn into.

In the process I was fortunate to meet a number of the creators of this new industry, among them Howard Aiken (Harvard), Rear Adm Grace Hopper (COBOL), Jan Rajchman (RCA, Core memory), Charles Kettering, Jack Kilby (Texas Instruments, Nobel Prize), and others.

For various reasons, not least being that my wife wanted to return to Milwaukee, we did just that. I did a little consulting and worked at Astronautics Corp. of America. It would have been nice to work on a PhD, but because of the years lost due to the war and then moving to another country that was not practical.

During my time at Astronautics MSOE President Karl Werwath suggested I try teaching and I found that this was more work, but a more productive and stimulating thing to do- at least for a while, I thought.

Well, I ended up staying, and now, after retirement, I still can't keep away from the place, among other things being Faculty Advisor to the MSOE Amateur Radio Club and holding the FCC License for our well-equipped amateur station(s) W9HHX.

Work Address: 1025 N Broadway
EECS Department
Milwaukee, WI 53202
Preferred Contact Method: Email
Department: Electrical Engineering and Computer Science
Title: Professor Emeritus
Office Number: CC-347
Education: MSOE RaTel Tech 1952
Univ. of Wisconsin MSEE 1970
Various: U. of Cincinnati, U of Michigan, MIT
Honors and Awards: US Pat. 3,125,673
"Electrochemical Data Storage and Counting Systems" Puterbaugh, et al.

US Pat. 3,161,457
"Thermal Printing Units" Schroeder, et al
Publications: (numerous - none refereed)
Hide Badges?: No
Phone Number: 414-291-3744

Other details

Member Since: Sep 5, 2013
Tags: photography amateur radio languages (bicycling flying)