Dear Mr. Power,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities, 1/1/1939 - 1/1/1949 in the Records of the Bureau of Naval Personnel (Record Group 24) that may include the records of this activity. Portions of this series have been digitized and are available online through the Catalog. However, because there were multiple Naval Training Centers as well as multiple service schools for radiomen, it is difficult to tell which muster rolls would correspond to the particular radio school you are researching. Also, muster rolls for this time period do not list officers. Please contact National Archives at College Park - Textual Reference (RDT2) via Archives2reference@nara.gov for more information about these records, and if possible provide any additional information you may have about which specific facility or organization this photograph is from.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
These records are now available in digital form and can be viewed online via Ancestry as U.S. World War II Navy Muster Rolls, 1938-1949. There may be a fee for this service. Instead, you may view these records online at one of NARA's facilities for free via a NARA PC. For the nearest NARA location, please consult our web page at http://www.archives.gov/locations/. Unfortunately, all National Archives locations are currently closed to the public because of the COVID-19 public health emergency. Additionally, you may check with your local public or university library as these institutions often provide access to their patrons.
You may also wish to contact the Naval History and Heritage Command for information regarding radio training programs during World War II.
We hope this is helpful. Best of luck with your research!
[information provided by Nate Patch, Subject Matter Expert]