Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1OWO callsign genealogy
Currently held by FOSTER, LAWRENCE 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 KB1OWO's current licensee, walking backwards.
- FOSTER, LAWRENCE JMEgranted 2018-01-09cancelled 2018-12-14
Successor callsigns
Callsigns held now by people who previously held KB1OWO.
- FOSTER, LAWRENCE JMEgranted 2018-01-09cancelled 2018-12-14
All historical holders
Every license row we've seen with the callsign KB1OWO, oldest first.
- FOSTER, LAWRENCE J ME2017-02-28 → cancelled 2018-01-09
- FOSTER, LAWRENCE J ME2018-12-14 active