Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1HFR callsign genealogy
Currently held by Riordan, 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 W1HFR's current licensee, walking backwards.
- Bentley, Thomas AFLgranted 2021-10-13cancelled 2023-05-31
Successor callsigns
Callsigns held now by people who previously held W1HFR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1HFR, oldest first.
- Riordan, Michael J MA2004-08-02 → cancelled 2016-09-17
- Bentley, Thomas A FL2023-05-31 active