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

AG4SU

Active

BOSTON, HAROLD S

Location: LOUISVILLE, KY
Class: Amateur Extra
Granted: 2015-04-17
Expires: 2025-07-13
Previous call: KF4BSI
FRN: 0002671444

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Vanity availability

Held

Currently held

AG4SU 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

KF4BSIcancelled· E
Boston, Harold SKYgranted 1995-07-13cancelled 2002-05-29

License history

0 events

No recorded events.

More vanity slots coming available

From Kentucky

All →

KG4VAS 2026-09-11
KG4VAT 2026-09-11
K4OTU 2026-09-14
KD4SWM 2026-09-14
KD4SWN 2026-09-14

Starting with AG4

All →

AG4TQ TN · 2026-09-21
AG4VH KY · 2026-09-21
AG4WQ FL · 2026-10-20
AG4XG TN · 2026-12-10
AG4ZA KY · 2026-12-10

Full history → Vanity availability → Callsign genealogy →