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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

WP4MA callsign genealogy

Currently held by OSTOLAZA, ANTONIO

The FCC publishes a previous_call_sign on every amateur license — a self-link to the licensee's prior callsign. Following those links produces the chain below.

Previous callsigns

Older callsigns held by WP4MA's current licensee, walking backwards.

  1. KP4MAGcancelled· G
    ARCE GONZALEZ, MARIANOPRgranted 2015-10-23cancelled 2019-10-08
  2. WP4PMUcancelled· G
    ARCE GONZALEZ, MARIANOPRgranted 2015-09-24cancelled 2015-10-23

Successor callsigns

Callsigns held now by people who previously held WP4MA.

  1. KP4MGactive· E
    ARCE GONZALEZ, MARIANOPRgranted 2020-12-29

All historical holders

Every license row we've seen with the callsign WP4MA, oldest first.

  • OSTOLAZA, ANTONIO PR
    1987-09-29 → cancelled 1999-09-30
  • ARCE GONZALEZ, MARIANO PR
    2019-10-08 → cancelled 2020-12-29
← Back to WP4MA License history →