Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6TWF callsign genealogy
Currently held by CRAIG, FREDERICK D
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 W6TWF's current licensee, walking backwards.
- Nelson, Patrick GNYgranted 2015-07-24cancelled 2019-08-13
Successor callsigns
Callsigns held now by people who previously held W6TWF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6TWF, oldest first.
- CRAIG, FREDERICK D CA1994-03-15 → cancelled 2006-03-16
- Nelson, Patrick G NY2019-08-13 active