Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4OW callsign genealogy
Currently held by Marsh, Frederick T
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 KK4OW's current licensee, walking backwards.
- Marsh, Frederick TVAgranted 2007-07-23cancelled 2013-03-09
Successor callsigns
Callsigns held now by people who previously held KK4OW.
No current licensee on record previously held this callsign.