Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6TTK callsign genealogy
Currently held by Alcock, Mark
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 K6TTK's current licensee, walking backwards.
- Hill, James LCAgranted 2018-06-05cancelled 2019-05-29
Successor callsigns
Callsigns held now by people who previously held K6TTK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6TTK, oldest first.
- Alcock, Mark CA2002-12-31 → cancelled 2015-01-01
- Hill, James L CA2019-05-29 active