Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK4TTL callsign genealogy
Currently held by FRIEL SR, MARVIN 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 KK4TTL's current licensee, walking backwards.
- FRIEL SR, MARVIN WNCgranted 2016-03-29cancelled 2016-08-26
Successor callsigns
Callsigns held now by people who previously held KK4TTL.
- FRIEL SR, MARVIN WNCgranted 2016-03-29cancelled 2016-08-26
All historical holders
Every license row we've seen with the callsign KK4TTL, oldest first.
- FRIEL SR, MARVIN W NC2013-09-09 → cancelled 2016-03-29
- FRIEL SR, MARVIN W NC2016-08-26 active