Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0ERO callsign genealogy
Currently held by ROWEKAMP, WILLIAM J
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 KA0ERO's current licensee, walking backwards.
- ROWEKAMP, WILLIAM JMOgranted 2019-12-14cancelled 2022-01-07
- ROWEKAMP, WILLIAM JAZgranted 2009-12-15cancelled 2018-10-05
- ROWEKAMP, WILLIAM JTXgranted 2000-01-04cancelled 2007-01-30
- ROWEKAMP, WILLIAM JMOgranted 1989-08-01cancelled 2000-01-04
Successor callsigns
Callsigns held now by people who previously held KA0ERO.
No current licensee on record previously held this callsign.