Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RFO callsign genealogy
Currently held by Franklin, John M
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 K4RFO's current licensee, walking backwards.
- Franklin, John MALgranted 1999-07-20cancelled 2002-10-04
Successor callsigns
Callsigns held now by people who previously held K4RFO.
No current licensee on record previously held this callsign.