uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

W9GP callsign genealogy

Currently held by Prockl, Gerry N

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 W9GP's current licensee, walking backwards.

  1. AB9NWcancelled· E
    Prockl, Gerry NWIgranted 2005-03-16cancelled 2007-04-13
  2. KB0SYNcancelled· E
    Prockl, Gerry NWIgranted 2005-03-16cancelled 2007-03-15

Successor callsigns

Callsigns held now by people who previously held W9GP.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W9GP, oldest first.

  • SULLIVAN, NORMAN D IL
    1997-03-25 → cancelled 2002-01-07
  • Prockl, Gerry N WI
    2017-03-20 active
← Back to W9GP License history →