Confidence: Medium · Source: FCC ULS · As of 2026-09-10

W9KFB

Active

MUELLER, MATTHEW M

Location: GERMANTOWN, WI
Class: General
Granted: 2023-09-12
Expires: 2033-09-12
Previous call: KD9YRJ
FRN: 0034062554

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Vanity availability

Held

Currently held

W9KFB 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

KD9YRJcancelled· T
Mueller, Matthew AWIgranted 2023-08-01cancelled 2023-09-12

Prior holders later became

K0EKAactive· E
Cox, Ronald WCOgranted 2019-02-20

License history

0 events

No recorded events.

More vanity slots coming available

From Wisconsin

All →

KD9OFI 2026-09-10
KD9ZZQ 2026-09-10
KK4LOF 2026-09-11
N9ZRB 2026-09-13
W7QFX 2026-09-13

Starting with W9

All →

W9HDM IL · 2026-09-21
W9NJH WI · 2026-09-21
W9PJG MA · 2026-09-21
W9LKI IN · 2026-10-07
W9PJF IL · 2026-10-12

Full history → Vanity availability → Callsign genealogy →