Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4IAP callsign genealogy
Currently held by Marcum Sr, Gary S
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 K4IAP's current licensee, walking backwards.
- MARCUM SR, GARY SFLgranted 1999-03-09cancelled 2000-06-17
Successor callsigns
Callsigns held now by people who previously held K4IAP.
No current licensee on record previously held this callsign.