Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1MAH callsign genealogy
Currently held by Holmstrup, Mark A
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 K1MAH's current licensee, walking backwards.
- Holmstrup, Mark ATXgranted 2008-02-11cancelled 2011-12-17
Successor callsigns
Callsigns held now by people who previously held K1MAH.
No current licensee on record previously held this callsign.