Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4APW callsign genealogy
Currently held by Walker, Andrew P
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 KK4APW's current licensee, walking backwards.
- Walker, Andrew PNCgranted 2020-12-07cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held KK4APW.
- KOHLMAN JR, FREDERICK JVAgranted 2021-01-14
All historical holders
Every license row we've seen with the callsign KK4APW, oldest first.
- KOHLMAN JR, FREDERICK J VA2011-03-03 → cancelled 2011-06-09
- Walker, Andrew P NC2020-12-29 active