Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7BK callsign genealogy
Currently held by MILNER, JOHN 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 KB7BK's current licensee, walking backwards.
- GUTHRIE, WILLIAM LAZgranted 2014-02-25cancelled 2020-08-18
Successor callsigns
Callsigns held now by people who previously held KB7BK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7BK, oldest first.
- MILNER, JOHN R WA2007-09-24 → cancelled 2019-12-20
- GUTHRIE, WILLIAM L AZ2020-08-18 active