Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI8JF callsign genealogy
Currently held by Hefferan, Michael J
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 KI8JF's current licensee, walking backwards.
- HEFFERAN, MICHAEL JMIgranted 1997-08-15cancelled 1999-10-19
Successor callsigns
Callsigns held now by people who previously held KI8JF.
- Hefferan, Michael JMIgranted 2020-02-12