Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1GJK callsign genealogy
Currently held by HARSHMAN, RAYMOND 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 W1GJK's current licensee, walking backwards.
- Kwasowski, Gregory JCTgranted 2001-03-07cancelled 2006-01-06
Successor callsigns
Callsigns held now by people who previously held W1GJK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1GJK, oldest first.
- HARSHMAN, RAYMOND J PA1988-08-02 → cancelled 2000-08-03
- Kwasowski, Gregory J CT2026-01-24 active