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

W1SUN

Active

SUN MICROSYSTEMS LABORATORIES

Location: PLANO, TX
Granted: 2019-02-05
Expires: 2028-02-12
Previous call: KB1CBH
FRN: 0005104930

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Held

Currently held

W1SUN 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

KB1CBH
no FCC ULS record on file

License history

0 events

No recorded events.

More vanity slots coming available

From Texas

All →

K2UMA 2026-09-10
K9CWO 2026-09-10
KB5SLO 2026-09-10
KD5C 2026-09-10
KD5TUE 2026-09-10

Starting with W1

All →

W1RLJ MA · 2026-09-10
W1BEK CT · 2026-09-13
W1GOU NH · 2026-09-21
W1PVC MA · 2026-10-04
W1CEF RI · 2026-10-12

Full history → Vanity availability → Callsign genealogy →