Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5EFA callsign genealogy
Currently held by KOLLATT SR, FRANK R
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 W5EFA's current licensee, walking backwards.
- KOLLATT, MADGE BARgranted 2009-02-10cancelled 2014-02-11
Successor callsigns
Callsigns held now by people who previously held W5EFA.
- Kollatt, Madge BLAgranted 2021-03-09
All historical holders
Every license row we've seen with the callsign W5EFA, oldest first.
- KOLLATT SR, FRANK R TX2003-08-14 → cancelled 2012-02-21
- KOLLATT, MADGE B AR2014-02-11 → cancelled 2021-03-09