Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1DGP callsign genealogy
Currently held by BOLSTER, RALPH C
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 K1DGP's current licensee, walking backwards.
- Peterson, Dalton GLAgranted 2024-08-08cancelled 2024-08-27
Successor callsigns
Callsigns held now by people who previously held K1DGP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1DGP, oldest first.
- BOLSTER, RALPH C ME1988-03-08 → cancelled 2000-03-09
- Peterson, Dalton G LA2024-08-27 active