Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6MP callsign genealogy
Currently held by CHEN, MARK 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 K6MP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K6MP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6MP, oldest first.
- CHEN, MARK T CA1999-11-18 → cancelled 2011-11-19
- Whiting, Jacob F CA2023-05-03 active