Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DPR callsign genealogy
Currently held by SIMKOWITZ, LOREN M
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 K3DPR's current licensee, walking backwards.
- Ryan, Donald PMDgranted 2012-05-15cancelled 2012-06-05
Successor callsigns
Callsigns held now by people who previously held K3DPR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3DPR, oldest first.
- SIMKOWITZ, LOREN M MD1995-08-07 → cancelled 2007-08-08
- Ryan, Donald P MD2012-06-05 → cancelled 2024-06-06