Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4KTP callsign genealogy
Currently held by JOHNSON, WALTER D
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 KJ4KTP's current licensee, walking backwards.
- JOHNSON, WALTER DNCgranted 2003-05-27cancelled 2009-03-30
Successor callsigns
Callsigns held now by people who previously held KJ4KTP.
- JOHNSON, WALTER DNCgranted 2009-04-21cancelled 2009-05-15