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

AK6SO

Active

Stumbo, Matthew T

Location: Pasadena, CA
Class: Amateur Extra
Granted: 2018-11-06
Expires: 2028-11-06
Previous call: KS6PKY
FRN: 0027932334

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Vanity availability

Held

Currently held

AK6SO 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

KS6PKYcancelled· E
Stumbo, Matthew TCAgranted 2018-11-06cancelled 2026-03-16
KM6WKCcancelled· T
Stumbo, Matthew TCAgranted 2018-10-19cancelled 2018-11-06

License history

0 events

No recorded events.

More vanity slots coming available

From California

All →

AC2TX 2026-09-10
K6DJM 2026-09-10
KC6JGS 2026-09-10
KC6KGL 2026-09-10
KC6VEU 2026-09-10

Starting with AK6

All →

AK6GG CA · 2026-09-17
AK6IP CA · 2026-09-21
AK6IX CA · 2026-10-08
AK6IZ CA · 2026-10-18
AK6IH CA · 2026-10-22

Full history → Vanity availability → Callsign genealogy →