Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4JAB callsign genealogy
Currently held by LEHTO, JOHN P
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 N4JAB's current licensee, walking backwards.
- Bowman IV, Joseph ATNgranted 2021-03-11cancelled 2021-06-15
Successor callsigns
Callsigns held now by people who previously held N4JAB.
- LEHTO, JOHN PWAgranted 2018-12-18
All historical holders
Every license row we've seen with the callsign N4JAB, oldest first.
- LEHTO, JOHN P WA2012-02-15 → cancelled 2018-12-18
- BOWMAN IV, JOSEPH A TN2021-06-15 active