Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DMA callsign genealogy
Currently held by PENTZ JR, ROBERT H
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 K4DMA's current licensee, walking backwards.
- Krasovic, GaryPAgranted 2018-08-13cancelled 2018-09-18
Successor callsigns
Callsigns held now by people who previously held K4DMA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DMA, oldest first.
- PENTZ JR, ROBERT H KY2006-06-02 → cancelled 2018-08-24
- Krasovic, Gary PA2018-09-18 active