Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1MAX callsign genealogy
Currently held by HEITMAN, MAX
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 W1MAX's current licensee, walking backwards.
- HEITMAN, MAXPAgranted 2006-04-17cancelled 2012-04-13
Successor callsigns
Callsigns held now by people who previously held W1MAX.
- TAYLOR, YALE MTXgranted 2009-04-07cancelled 2010-06-19
All historical holders
Every license row we've seen with the callsign W1MAX, oldest first.
- TAYLOR, YALE M TX1999-07-09 → cancelled 2009-04-07
- HEITMAN, MAX PA2023-09-29 active