Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4IGK callsign genealogy
Currently held by BOLTZ, DONALD T
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 K4IGK's current licensee, walking backwards.
- BOLTZ, DONALD TSCgranted 2015-08-11cancelled 2019-08-16
Successor callsigns
Callsigns held now by people who previously held K4IGK.
No current licensee on record previously held this callsign.