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

K4PTB

Active

Johnson, Adam D

Location: Dorchester, MA
Class: General
Granted: 2024-08-16
Expires: 2034-08-16
Previous call: K4VEC
FRN: 0004139168

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Vanity availability

Held

Currently held

K4PTB 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

K4VECcancelled· G
Johnson, Adam DNCgranted 2014-07-08cancelled 2024-08-16
KG4JWOcancelled· T
Johnson, Adam DNCgranted 2000-10-11cancelled 2004-08-03

Prior holders later became

W4LQactive· E
JOHNSON, LESTER ENCgranted 2016-08-17

License history

0 events

No recorded events.

More vanity slots coming available

From Massachusetts

All →

K1AFR 2026-09-10
KC1SDV 2026-09-10
W1RLJ 2026-09-10
KB1ITH 2026-09-12
KB1YQO 2026-09-13

Starting with K4

All →

K4CYG FL · 2026-09-10
K4LWW NC · 2026-09-10
K4ONS NC · 2026-09-10
K4YDD FL · 2026-09-10
K4KLP TN · 2026-09-13

Full history → Vanity availability → Callsign genealogy →