Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3RJD callsign genealogy
Currently held by KROHN, PETER L
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 W3RJD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W3RJD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3RJD, oldest first.
- KROHN, PETER L PA1987-10-13 → cancelled 1999-10-14
- DENIS, ROBERT J NC2022-02-15 active