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

AC3EW

Active

WALKER, MARK C

Location: Frederick, MD
Class: Amateur Extra
Granted: 2019-07-19
Expires: 2029-10-02
Previous call: AF4PZ
FRN: 0003285038

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

Vanity availability

Held

Currently held

AC3EW 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

AF4PZcancelled· E
WALKER, MARK CMDgranted 2019-07-19cancelled 2019-08-13
WL7Oactive· E
DAVIS, MARK AAKgranted 2017-06-06
KM4OEcancelled· E
DAVIS, MARK AAKgranted 2011-09-08cancelled 2017-06-06

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 AC3

All →

AC3KF MD · 2026-09-24
AC3NE MD · 2026-10-26
AC3FS NC · 2026-11-26
AC3NM PA · 2026-12-10
AC3LG DE · 2027-01-11

Full history → Vanity availability → Callsign genealogy →