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

AJ4RJ

Active

Achtenberg, Robert J

Location: Roswell, GA
Class: Amateur Extra
Granted: 2023-04-01
Expires: 2033-04-01
Previous call: KF4RJA
FRN: 0030765226

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Vanity availability

Held

Currently held

AJ4RJ 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

KF4RJAcancelled· E
Achtenberg, Robert JGAgranted 2022-03-05cancelled 2023-04-01
KO4QJKcancelled· G
Achtenberg, Robert JGAgranted 2021-05-17cancelled 2022-03-05

License history

0 events

No recorded events.

More vanity slots coming available

From Georgia

All →

KG4VAA 2026-09-10
KK4LOC 2026-09-11
KK4LOG 2026-09-11
KK4LOH 2026-09-11
KK4LOK 2026-09-11

Starting with AJ4

All →

AJ4IB KY · 2026-09-21
AJ4MH FL · 2027-02-04
AJ4EK KY · 2027-02-14
AJ4MD GA · 2027-04-03
AJ4BA FL · 2027-05-31

Full history → Vanity availability → Callsign genealogy →