Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DOG callsign genealogy
Currently held by SANDIFER JR, PRESTON M
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 K4DOG's current licensee, walking backwards.
- Davis, Bradley LSCgranted 1999-09-24cancelled 2001-09-05
Successor callsigns
Callsigns held now by people who previously held K4DOG.
- SANDIFER JR, PRESTON MSCgranted 1999-01-07cancelled 2005-08-30
All historical holders
Every license row we've seen with the callsign K4DOG, oldest first.
- DAVIS, BRADLEY L MS2021-08-19 active
- SANDIFER JR, PRESTON M— → cancelled 1999-01-07