Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1KDX callsign genealogy
Currently held by Wasserman, Katherine
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 K1KDX's current licensee, walking backwards.
- McAllister III, William DNHgranted 2013-12-06cancelled 2016-06-14
Successor callsigns
Callsigns held now by people who previously held K1KDX.
- Wasserman, KatherineMEgranted 2017-01-10cancelled 2019-03-26
All historical holders
Every license row we've seen with the callsign K1KDX, oldest first.
- Wasserman, Katherine NY2004-08-03 → cancelled 2007-04-03
- McAllister III, William D NH2026-06-24 active