Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7GAC callsign genealogy
Currently held by MC CLAMROCK, JOHN M
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 W7GAC's current licensee, walking backwards.
- Cochlin, Glynis AWAgranted 2008-05-08cancelled 2008-05-28
Successor callsigns
Callsigns held now by people who previously held W7GAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7GAC, oldest first.
- MC CLAMROCK, JOHN M WA1996-10-10 → cancelled 1998-04-18
- Cochlin, Glynis A WA2018-05-08 active