Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6HFJ callsign genealogy
Currently held by Saperstein, Mark D
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 W6HFJ's current licensee, walking backwards.
- Saperstein, Mark DCAgranted 2012-02-15cancelled 2020-08-25
Successor callsigns
Callsigns held now by people who previously held W6HFJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6HFJ, oldest first.
- SAPERSTEIN, SIDNEY CA2009-02-24 → cancelled 2018-09-03
- Saperstein, Mark D CA2020-08-25 active