Confidence: Medium · Source: FCC ULS · As of 2026-09-10

W4KSR

Cancelled

CARLSON, MARK A

Location: Windham, ME
Class: General
Granted: 1998-10-05
Expires: 2008-10-05
Previous call: N1DLO
FRN: 0003695715

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Vanity availability

Unknown

Status unknown

No vanity-slot record on file for W4KSR. Either it has never been issued, is currently held by an active license, or hasn't been re-computed since its last freeing event.

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

W8VDactive· E
MAYNE, WALTERMIgranted 2025-06-03
N8KPPcancelled· E
MAYNE, WALTERMIgranted 2021-06-30cancelled 2025-06-03

Prior holders later became

W1MTWactive· G
CARLSON, MARK AMEgranted 2017-11-01

License history

0 events

No recorded events.

More vanity slots coming available

From Maine

All →

KB1ICB 2026-09-10
KB1YQF 2026-09-13
KB1YQH 2026-09-13
KC1VEC 2026-09-17
KD4TCW 2026-09-21

Starting with W4

All →

W4IDI AL · 2026-09-10
W4YAU TN · 2026-09-10
W4CVH VA · 2026-09-12
W4QDZ NC · 2026-09-13
W4CKI AL · 2026-09-17

Full history → Vanity availability → Callsign genealogy →