Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0AAB callsign genealogy
Currently held by harmon, tristan
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 W0AAB's current licensee, walking backwards.
- harmon, tristanCOgranted 2020-12-17cancelled 2021-01-19
Successor callsigns
Callsigns held now by people who previously held W0AAB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0AAB, oldest first.
- BATCHMAN, AUDREY A KS2008-09-25 → cancelled 2020-12-18
- harmon, tristan CO2021-01-19 active