Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1LH callsign genealogy
Currently held by Kalthoff, Andreas
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 AB1LH's current licensee, walking backwards.
- Kalthoff, AndreasMAgranted 2009-07-02cancelled 2009-10-14
Successor callsigns
Callsigns held now by people who previously held AB1LH.
No current licensee on record previously held this callsign.