Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2JDK callsign genealogy
Currently held by Herrmann, Michael F
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 W2JDK's current licensee, walking backwards.
- HERRMANN, MICHAEL FNYgranted 2007-02-21cancelled 2011-01-22
Successor callsigns
Callsigns held now by people who previously held W2JDK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W2JDK, oldest first.
- HERRMANN, PAUL J NY2008-01-15 → cancelled 2010-08-01
- Herrmann, Michael F NY2020-12-18 active