Confidence: Medium · Source: FCC ULS · As of 2026-09-10
W4MMO
ActiveRolfson, Thomas P
- Location
- Brookfield, WI
- Class
- Technician
- Granted
- 2021-04-20
- Expires
- 2031-04-20
- Previous call
- KD9SHL
- FRN
- 0030727366
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Vanity availability
HeldCurrently held
W4MMO 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
- Rolfson, ThomasWIgranted 2021-04-02cancelled 2021-04-20
License history
0 eventsNo recorded events.