Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RFS callsign genealogy
Currently held by Tock, Joseph
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 K4RFS's current licensee, walking backwards.
- Tock, JosephVAgranted 2006-09-14cancelled 2007-10-13
Successor callsigns
Callsigns held now by people who previously held K4RFS.
No current licensee on record previously held this callsign.