Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9ZPL callsign genealogy
Currently held by COLEN, DAVID 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 KA9ZPL's current licensee, walking backwards.
- COLEN, DAVID MILgranted 2015-11-18cancelled 2015-12-08
Successor callsigns
Callsigns held now by people who previously held KA9ZPL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA9ZPL, oldest first.
- HAMPSON, JANICE A IN1988-10-25 → cancelled 2000-10-26
- COLEN, DAVID M IL2025-11-27 active