Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF6NAT callsign genealogy
Currently held by KNOLLMUELLER, DANIEL J
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 KF6NAT's current licensee, walking backwards.
- DEL CARMEN, RENATO SCAgranted 2016-06-24cancelled 2020-07-03
Successor callsigns
Callsigns held now by people who previously held KF6NAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF6NAT, oldest first.
- KNOLLMUELLER, DANIEL J CA1997-10-06 → cancelled 2009-08-01
- DEL CARMEN, RENATO S CA2020-07-03 active