Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4RT callsign genealogy
Currently held by MEDFORD, HOUCK 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 KM4RT's current licensee, walking backwards.
- Fletcher, Scott RTNgranted 2016-07-07cancelled 2019-02-01
Successor callsigns
Callsigns held now by people who previously held KM4RT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM4RT, oldest first.
- MEDFORD, HOUCK M NC1989-05-09 → cancelled 2001-05-10
- Fletcher, Scott R TN2019-02-01 active