Confidence: Medium · Source: FCC ULS · As of 2026-09-10
K4HBM
ActiveMarkwardt, Gregory E
- Location
- San Antonio, TX
- Class
- General
- Granted
- 2026-06-04
- Expires
- 2036-06-04
- Previous call
- KG5BAD
- FRN
- 0023486673
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Vanity availability
HeldCurrently held
K4HBM is held by an active license; it isn't a vanity slot right now.
Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).
Callsign genealogy
Full chain →Previously held by current licensee
- Markwardt, Gregory ETXgranted 2014-03-27cancelled 2015-07-24
License history
0 eventsNo recorded events.