Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4RRY callsign genealogy
Currently held by WALLER, MICHAEL L
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 KF4RRY's current licensee, walking backwards.
- KI4OWFcancelledNEOFELIS COMMUNICATIONS AMATEUR RADIO CLUBVAgranted 2006-04-25cancelled 2006-05-13
Successor callsigns
Callsigns held now by people who previously held KF4RRY.
- WALLER, MICHAEL LFLgranted 2010-10-14cancelled 2011-09-09
All historical holders
Every license row we've seen with the callsign KF4RRY, oldest first.
- WALLER, MICHAEL L NC1997-09-19 → cancelled 2000-12-22
- NEOFELIS COMMUNICATIONS AMATEUR RADIO CLUB IL2016-03-15 active