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

N3BU

Active

KROL SR, STANLEY J

Location: BALTIMORE, MD
Class: Amateur Extra
Granted: 2018-04-02
Expires: 2028-05-10
Previous call: KB3PUI
FRN: 0011321148

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

Vanity availability

Held

Currently held

N3BU 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

KB3PUIcancelled· E
Krol Sr, Stanley JMDgranted 2007-10-04cancelled 2008-05-10

Prior holders later became

W3WTactive· E
MC LELLAN, SCOTT WPAgranted 2018-07-19

License history

0 events

No recorded events.

More vanity slots coming available

From Maryland

All →

KB3INT 2026-09-09
KC3ZRU 2026-09-09
N3BYL 2026-09-09
N3JTJ 2026-09-12
KB3ZFH 2026-09-13

Starting with N3

All →

N3BYL MD · 2026-09-09
N3NFG PA · 2026-09-09
N3GMB CA · 2026-09-11
N3JTJ MD · 2026-09-12
N3IIU DE · 2026-09-14

Full history → Vanity availability → Callsign genealogy →