Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KL7FU callsign genealogy
Currently held by SOMMER, ROBERT C
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 KL7FU's current licensee, walking backwards.
- SOMMER, ROBERT CAKgranted 1999-07-29cancelled 2003-08-16
Successor callsigns
Callsigns held now by people who previously held KL7FU.
- BUREK, ROBERT JTNgranted 2011-05-18cancelled 2019-04-16
All historical holders
Every license row we've seen with the callsign KL7FU, oldest first.
- BUREK, ROBERT J AK2001-01-23 → cancelled 2001-07-27
- SOMMER, ROBERT C FL2013-09-17 → cancelled 2025-08-19