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

N5MJK

Active

KIEFER, MICHAEL J

Location: WYLIE, TX
Class: Amateur Extra
Granted: 2017-11-28
Expires: 2027-11-28
Previous call: KB3QKF
FRN: 0005283833

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Vanity availability

Held

Currently held

N5MJK 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

KB3QKFcancelled· E
KIEFER, MICHAEL JTXgranted 2016-06-07cancelled 2017-11-28
KB9NUXcancelled· G
Kiefer, Michael JDEgranted 2006-05-18cancelled 2008-02-15

Prior holders later became

W6EZUcancelled· E
KAZMIERCZAK, MICHAEL JOKgranted 2011-06-29cancelled 2014-03-28

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 N5

All →

N5VHN LA · 2026-09-10
N5SJU IA · 2026-09-11
N5XCW TX · 2026-09-11
N5ADM LA · 2026-09-12
N5NTM TX · 2026-09-13

Full history → Vanity availability → Callsign genealogy →