1927 QSL Card from MSOE's Station 9SO

During the construction of my reproduction early 1930's radio shack I began a search for period cards to hang on the wall behind the equipment setup to add that "authentic look". One card that was first on my list of wants was an early MSOE, then called School of Engineering of Milwaukee, QSL. I was most happy when contacted by Tony W2VRK about making some trades with him to help both of us in obtaining sought after cards. Tony happened to have the MSOE card I wanted. In this 1927 card they held the callsign 9SO. The NU in front of the call was a ham self assigned lettering indicating North America - United States. These lettering schemes were found necessary to avoid duplicate calls with overseas stations. Global communications was becoming more common place. These prefixes where not government issued!

For additional history on MSOE's radio operations, including their commercial endeavors click here!

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