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

K9WO

Active

DUBBERSTEIN, STEVEN L

Location: PORTAGE, WI
Class: Amateur Extra
Granted: 2017-06-07
Expires: 2027-07-17
Previous call: NA9D
FRN: 0007629264

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Vanity availability

Held

Currently held

K9WO 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

NA9Dactive· E
OGDEN, JONATHAN DILgranted 2020-04-14
KE9NAcancelled· E
OGDEN, JONATHAN DILgranted 1997-03-21cancelled 2000-05-02

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 K9

All →

K9CWO TX · 2026-09-10
K9CYV IL · 2026-09-10
K9SRS IL · 2026-09-12
K9WCC CA · 2026-09-13
K9CKY OH · 2026-09-14

Full history → Vanity availability → Callsign genealogy →