Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1RPK callsign genealogy
Currently held by GROVER, FREDERICK 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 K1RPK's current licensee, walking backwards.
- Kreidel, Richard PCTgranted 2011-04-15cancelled 2011-06-03
Successor callsigns
Callsigns held now by people who previously held K1RPK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1RPK, oldest first.
- GROVER, FREDERICK M NH1987-09-01 → cancelled 1999-09-02
- Kreidel, Richard P CT2021-03-10 active