Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK7OS callsign genealogy
Currently held by PARR, FREDRICK 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 KK7OS's current licensee, walking backwards.
- PARR, FREDRICK Rcancelled 1998-07-06
Successor callsigns
Callsigns held now by people who previously held KK7OS.
No current licensee on record previously held this callsign.