Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA4BLK callsign genealogy
Currently held by Ling, Frank C
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 KA4BLK's current licensee, walking backwards.
- Ling, Frank CTNgranted 2014-12-09cancelled 2020-05-12
Successor callsigns
Callsigns held now by people who previously held KA4BLK.
No current licensee on record previously held this callsign.