Confidence: Medium · Source: FCC ULS · As of 2026-09-15
K4AK callsign genealogy
Currently held by Sprague, Denton E
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 K4AK's current licensee, walking backwards.
- COLLINS, ROBERT MFLgranted 2004-01-06cancelled 2011-06-28
Successor callsigns
Callsigns held now by people who previously held K4AK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4AK, oldest first.
- Sprague, Denton E NM2004-01-15 → cancelled 2011-05-25
- COLLINS, ROBERT M FL2021-04-05 active