Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9ROL callsign genealogy
Currently held by BLACKWELL II, HENRY B
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 KA9ROL's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KA9ROL.
- BLACKWELL II, HENRY BINgranted 2025-06-28