Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4ZJP callsign genealogy
Currently held by Pennstrom, Zachery
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 KN4ZJP's current licensee, walking backwards.
- Pennstrom, ZackNCgranted 2019-10-07cancelled 2019-10-25
Successor callsigns
Callsigns held now by people who previously held KN4ZJP.
- Pennstrom, ZacheryNCgranted 2019-10-25