The list of call sign acronyms and abbreviations.

All call sign related acronyms and abbreviations.

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1
UPS:
United Parcel Service(US Post, Postal, Call Sign)
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For more, try CALL SIGN on ALL ACRONYMS DICTIONARY
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APASmart Define. (2017). call sign. Retrieved September 26, 2026, from http://smartdefine.org/call_sign/abbreviations/r/US_Post
ChicagoSmart Define. 2017. "call sign" http://smartdefine.org/call_sign/abbreviations/r/US_Post (accessed September 26, 2026).
HarvardSmart Define 2017, call sign, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/call_sign/abbreviations/r/US_Post>.
MLASmart Define. "call sign" 23 September 2017. Web. 26 September 2026. <http://smartdefine.org/call_sign/abbreviations/r/US_Post>