Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KN4NU

Expired

MERCER, WILLIAM B

Location: FAYETTEVILLE, NC
Class: Advanced
Granted: 1990-08-07
Expires: 2000-08-07
Previous call: N4YPB

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Available

Available now

KN4NU cleared its 2-year hold on 2004-08-06. Eligible for vanity application.

Last held by MERCER, WILLIAM B (NC).

Confidence: High

Expired licenses get a 2-year FCC renewal grace period followed by the 2-year hold. The date shown accounts for both, so it's the firm release date per §97.19.

Callsign genealogy

Full chain →

Previously held by current licensee

N4YPB
no FCC ULS record on file

License history

0 events

No recorded events.

More vanity slots coming available

From North Carolina

All →

KD4SWY 2026-09-14
KQ4STZ 2026-09-14
KQ4UVR 2026-09-14
NL7YV 2026-09-14
KG4VDF 2026-09-16

Starting with KN4

All →

KN4ZVG FL · 2026-09-17
KN4LGK GA · 2026-09-21
KN4VXC NC · 2026-09-21
KN4RPM VA · 2026-10-07
KN4GAM GA · 2026-10-12

Full history → Vanity availability → Callsign genealogy →