Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4KWW callsign genealogy
Currently held by Towler, John J
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 K4KWW's current licensee, walking backwards.
- Towler, John JPAgranted 2021-10-04cancelled 2021-11-09
Successor callsigns
Callsigns held now by people who previously held K4KWW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KWW, oldest first.
- TOWLER, HORACE J PA2014-02-12 → cancelled 2019-11-21
- Towler, John J PA2021-11-09 active