Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA0CX callsign genealogy
Currently held by SWARTZELL, MARK A
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 AA0CX's current licensee, walking backwards.
- SWARTZELL, MARK ANDgranted 2020-03-20cancelled 2020-04-17
Successor callsigns
Callsigns held now by people who previously held AA0CX.
- SWARTZELL, MARK ANDgranted 2020-03-20cancelled 2020-04-17
All historical holders
Every license row we've seen with the callsign AA0CX, oldest first.
- SWARTZELL, MARK A ND2010-09-09 → cancelled 2020-03-20
- SWARTZELL, MARK A ND2020-04-17 active