Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6APC callsign genealogy
Currently held by RELF, WILLIAM 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 K6APC's current licensee, walking backwards.
- McInnis, Ryan JCAgranted 2026-04-22cancelled 2026-06-13
Successor callsigns
Callsigns held now by people who previously held K6APC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6APC, oldest first.
- RELF, WILLIAM J CA2008-08-05 → cancelled 2020-08-19
- McInnis, Ryan CA2026-06-13 active