Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ZPA callsign genealogy
Currently held by FROG HOLLOW ARC
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 K4ZPA's current licensee, walking backwards.
- KJ4HRBcancelledFROG HOLLOW ARCVAgranted 2008-11-06cancelled 2008-11-29
Successor callsigns
Callsigns held now by people who previously held K4ZPA.
No current licensee on record previously held this callsign.