Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FRP callsign genealogy
Currently held by PRAHL, FRANCIS R
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 K4FRP's current licensee, walking backwards.
- PRAHL, FRANCIS RFLgranted 2007-09-13cancelled 2007-10-06
Successor callsigns
Callsigns held now by people who previously held K4FRP.
No current licensee on record previously held this callsign.