Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB3HFR callsign genealogy
Currently held by Holmen, Mark
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 KB3HFR's current licensee, walking backwards.
- Holmen, MarkMDgranted 2014-10-10cancelled 2020-04-17
Successor callsigns
Callsigns held now by people who previously held KB3HFR.
- Holmen, MarkMDgranted 2014-10-10cancelled 2020-04-17
All historical holders
Every license row we've seen with the callsign KB3HFR, oldest first.
- Holmen, Mark MD2011-08-13 → cancelled 2014-10-10
- Holmen, Mark MD2020-04-17 active