Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7JJS callsign genealogy
Currently held by SHIELDS, JACK 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 W7JJS's current licensee, walking backwards.
- SAFIRSTEIN, JOSEPHORgranted 2025-07-23cancelled 2025-08-09
Successor callsigns
Callsigns held now by people who previously held W7JJS.
- SHIELDS, JACK JORgranted 2012-12-07cancelled 2024-12-10
All historical holders
Every license row we've seen with the callsign W7JJS, oldest first.
- SHIELDS, JACK J OR2007-12-18 → cancelled 2012-12-07
- SAFIRSTEIN, JOSEPH OR2025-08-09 active