Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS5I callsign genealogy
Currently held by Henglein Jr, Robert 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 KS5I's current licensee, walking backwards.
- MAHN, THEODORE HARgranted 2004-01-07cancelled 2010-01-26
Successor callsigns
Callsigns held now by people who previously held KS5I.
- Henglein Jr, Robert JTXgranted 2017-10-02
All historical holders
Every license row we've seen with the callsign KS5I, oldest first.
- SKILES, HOWARD H TX1996-02-05 → cancelled 2005-03-02
- Henglein Jr, Robert J TX2007-11-02 → cancelled 2007-12-18
- MAHN, THEODORE H AR2019-11-08 active