Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AG6SH callsign genealogy
Currently held by Oh, Mark C
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 AG6SH's current licensee, walking backwards.
- Oh, Mark CCAgranted 2011-08-25cancelled 2013-03-12
Successor callsigns
Callsigns held now by people who previously held AG6SH.
No current licensee on record previously held this callsign.