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

KU4RC

Active

Humm, William L

Location: Crowley, TX
Class: Amateur Extra
Granted: 2017-01-30
Expires: 2027-04-21
Previous call: KF4QZV
FRN: 0002925147

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Vanity availability

Held

Currently held

KU4RC 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

KF4QZVcancelled· G
HUMM, WILLIAM Lcancelled 1998-04-22

License history

0 events

No recorded events.

More vanity slots coming available

From Texas

All →

K2UMA 2026-09-10
K9CWO 2026-09-10
KB5SLO 2026-09-10
KD5C 2026-09-10
KD5TUE 2026-09-10

Starting with KU4

All →

KU4QM KY · 2026-10-19
KU4Y NY · 2027-01-17
KU4QL FL · 2027-01-18
KU4X AL · 2027-03-11
KU4FE AL · 2027-03-22

Full history → Vanity availability → Callsign genealogy →