Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZL callsign genealogy
Currently held by JACKSON JR, ELMER B
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 K4ZL's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held K4ZL.
- Birk, PeterVAgranted 2019-01-31
All historical holders
Every license row we've seen with the callsign K4ZL, oldest first.
- JACKSON JR, ELMER B TN1998-06-11 → cancelled 2004-02-14
- Birk, Peter VA2006-10-21 → cancelled 2009-04-14
- JACKSON JR, ELMER B TN2018-05-30 active