Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0PQ callsign genealogy
Currently held by Logsdon, Mark D
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 AB0PQ's current licensee, walking backwards.
- Logsdon, Mark DCOgranted 2000-02-26cancelled 2000-11-30
Successor callsigns
Callsigns held now by people who previously held AB0PQ.
- Logsdon, Mark DCOgranted 2015-12-12