Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4KSW callsign genealogy
Currently held by McGarrahan, Brian T
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 KK4KSW's current licensee, walking backwards.
- McGarrahan, Brian TSCgranted 2012-08-21cancelled 2014-02-21
Successor callsigns
Callsigns held now by people who previously held KK4KSW.
All historical holders
Every license row we've seen with the callsign KK4KSW, oldest first.
- McGarrahan, Brian T SC2012-07-31 → cancelled 2012-08-21
- McGarrahan, Brian T SC2024-11-19 active