Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4EMR callsign genealogy
Currently held by JORDAN, HAROLD
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 K4EMR's current licensee, walking backwards.
- UNDERWOOD, DONNA MNCgranted 2004-06-07cancelled 2005-09-13
Successor callsigns
Callsigns held now by people who previously held K4EMR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4EMR, oldest first.
- JORDAN, HAROLD KY1987-09-08 → cancelled 1999-09-10
- UNDERWOOD, DONNA M WY2025-12-04 active