Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1DOG callsign genealogy
Currently held by MAXSON, BRUCE R
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 K1DOG's current licensee, walking backwards.
- MAXSON, BRUCE RFLgranted 2000-04-19cancelled 2000-11-21
- KA1FHFno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K1DOG.
- CASTALDO, RICHARD JCTgranted 2018-08-07
All historical holders
Every license row we've seen with the callsign K1DOG, oldest first.
- MAXSON, BRUCE R FL2020-09-10 active
- CASTALDO, RICHARD J— → cancelled 1998-10-05