I did find this Hope's this helps.
777th AAFBU (147th AACS Sq) - Harmon Fld, Guam
15 May 44 - 20 Jul 45: Section P, 91st AAF Base Unit (147th AACS Sq). 20 Jul 45 - 3 Jun 48: 777th AAF Base Unit (147th AACS Sq).
Will do some more digging.
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Dear Mr. Calcagno,
Thank you for posting your request on History Hub!
We suggest that you check the unit history for the 147th Army Airways Communications System (AACS) Squadron. Unit histories and supporting documents of Army Air Force units are in the custody of the Air Force Historical Research Agency (AFHRA), 600 Chennault Circle, Building 1405, Maxwell Air Force Base, AL 36112-6424. You should call (334) 953-2395 or write to that office for further information concerning these records. The web site is https://www.afhra.af.mil/.
Since some of the histories have been microfilmed, please use the index to the Air Force History microfilm available at https://www.airforcehistoryindex.org/. In the search box, please type SQUADRON/0147/ARMY AIRWAYS COMMUNICATIONS SYSTEM. Click on each pdf. If the IRISREF number begins with A, B or C, please contact the National Archives at College Park - Textual Reference (RDT2) via email at email@example.com for copies or access to the rolls. Any other letter or number, please contact AFHRA as indicated above.
We hope this information is helpful. Best of luck with your research!