Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1TOD callsign genealogy
Currently held by HALCHAK, JOHN R
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 W1TOD's current licensee, walking backwards.
- Baker, JamesINgranted 2017-03-29cancelled 2017-08-15
Successor callsigns
Callsigns held now by people who previously held W1TOD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1TOD, oldest first.
- HALCHAK, JOHN R MA1997-03-12 → cancelled 2009-03-13
- Baker, James IN2017-08-15 active