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

K4PP callsign genealogy

Currently held by Patterson, Paul

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 K4PP's current licensee, walking backwards.

  1. K4PRPcancelled· T
    Borkowski, Matt JFLgranted 2013-10-17cancelled 2021-10-05
  2. K9FHPactive· T
    Groth, Barbara MFLgranted 2017-01-04
  3. KM4ZPZcancelled· T
    Groth, Barbara MFLgranted 2016-12-14cancelled 2017-01-04

Successor callsigns

Callsigns held now by people who previously held K4PP.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K4PP, oldest first.

  • SANDIFER JR, PRESTON M SC
    1999-01-07 → cancelled 2005-08-30
  • Patterson, Paul AL
    2020-09-22 active
← Back to K4PP License history →