Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9JOE callsign genealogy
Currently held by HEINKE SR, DONALD 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 N9JOE's current licensee, walking backwards.
- Ybarra Jr, Joe ITXgranted 2013-03-26cancelled 2022-06-24
Successor callsigns
Callsigns held now by people who previously held N9JOE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9JOE, oldest first.
- HEINKE SR, DONALD J WI2010-03-10 → cancelled 2022-06-07
- Ybarra Jr, Joe I TX2022-06-24 active