Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1HOT callsign genealogy
Currently held by BLACKSTOCK, MICHAEL K
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 K1HOT's current licensee, walking backwards.
- Hanzely, Thomas OPAgranted 2016-11-21cancelled 2019-10-25
Successor callsigns
Callsigns held now by people who previously held K1HOT.
- BLACKSTOCK, MICHAEL KMSgranted 2010-07-29cancelled 2015-09-29
All historical holders
Every license row we've seen with the callsign K1HOT, oldest first.
- BLACKSTOCK, MICHAEL K AZ2000-10-24 → cancelled 2009-05-08
- Hanzely, Thomas O PA2019-10-25 active