Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5AMP callsign genealogy
Currently held by BYCHOWSKI SR, ROBERT F
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 K5AMP's current licensee, walking backwards.
- HANCE, THOMAS COKgranted 2007-09-17cancelled 2013-08-27
Successor callsigns
Callsigns held now by people who previously held K5AMP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5AMP, oldest first.
- BYCHOWSKI SR, ROBERT F TX1998-11-24 → cancelled 2010-11-25
- HANCE, THOMAS C OK2023-12-28 active