Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KU1K callsign genealogy
Currently held by POLOWY, WILLIAM M
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 KU1K's current licensee, walking backwards.
- Parker, Ulysses CMEgranted 2014-05-28cancelled 2015-06-27
Successor callsigns
Callsigns held now by people who previously held KU1K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU1K, oldest first.
- POLOWY, WILLIAM M CT2003-03-12 → cancelled 2015-06-09
- Parker, Ulysses C ME2025-06-18 active