Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JJF callsign genealogy
Currently held by Smith, Dan L
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 K4JJF's current licensee, walking backwards.
- Smith, Michael LNVgranted 2009-11-20cancelled 2011-03-01
Successor callsigns
Callsigns held now by people who previously held K4JJF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4JJF, oldest first.
- Smith, Dan L NV2006-12-01 → cancelled 2009-02-22
- Smith Jr., Michael L NV2021-02-05 active