Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4PT callsign genealogy
Currently held by Tampien, Paul W
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 KM4PT's current licensee, walking backwards.
- Tampien, Paul WTNgranted 2017-03-15cancelled 2018-04-13
Successor callsigns
Callsigns held now by people who previously held KM4PT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM4PT, oldest first.
- HERRINGTON JR, WILLIAM J FL1998-11-20 → cancelled 2010-11-23
- Tampien, Paul W TN2018-04-13 active