Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB8JMD callsign genealogy
Currently held by KALWASINSKI, GREGORY 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 KB8JMD's current licensee, walking backwards.
- Delaney, J MichaelOHgranted 2000-12-08cancelled 2010-11-19
Successor callsigns
Callsigns held now by people who previously held KB8JMD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB8JMD, oldest first.
- KALWASINSKI, GREGORY P MI1990-03-27 → cancelled 2002-03-28
- Delaney, J Michael OH2020-11-19 active