Confidence: Medium · Source: FCC ULS · As of 2026-09-09
N4MJC
ActiveColombo, Mark J
- Location
- Alexandria, VA
- Class
- Amateur Extra
- Granted
- 2020-12-17
- Expires
- 2031-03-15
- Previous call
- KJ4IEA
- FRN
- 0018313148
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Vanity availability
HeldCurrently held
N4MJC 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
- Colombo, Mark JVAgranted 2008-12-01cancelled 2011-03-15
License history
0 eventsNo recorded events.