Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4YO callsign genealogy
Currently held by PENDERS, THOMAS 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 AJ4YO's current licensee, walking backwards.
- PENDERS, THOMAS MNCgranted 2010-04-09cancelled 2010-04-20
Successor callsigns
Callsigns held now by people who previously held AJ4YO.
- PENDERS, THOMAS MNCgranted 2020-03-24