Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2JSA callsign genealogy
Currently held by ALLAN, JAMES S
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 K2JSA's current licensee, walking backwards.
- ALLAN, JAMES SMAgranted 2017-10-26cancelled 2017-11-17
Successor callsigns
Callsigns held now by people who previously held K2JSA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K2JSA, oldest first.
- BLOOMINGDALE, FRANK C NY1997-11-11 → cancelled 2009-11-13
- ALLAN, JAMES S MA2017-11-17 active