Site navigation:
K Explanatory notes
7 Other tools main page
Application notes
Query tools main page
Silent Key callsign harvesting
Web site news (2026-10-03)
K7AQ (since 1987)
Look up a callsign:
Retrieving licensee (ID) callsign history for

L00328864

Navigation:
  • Scroll down to this licensee’s applications.
  • A Callsign opens its license & application history; an Entity Name opens the FRN history.
  • A Grant Date opens that day’s processing; an Effective Date opens the license record.
Notes:
  • A bold Callsign was assigned as a vanity callsign.
  • Active licenses are listed first, then by Effective Date; one table per FCC Registration Number.

With FCC Registration Number = ‘0004391579’

CallsignRegion
/ State		 Entity
Name		Applicant
Type		 Licensee
Class		 License
Status		 Grant
Date		Effective
Date		 Cancel
Date		Expire
Date
WC8K5 / OK KNUPKE, WILLIAM C I - Individual E - Amateur Extra E - Expired 2010-12-21 2010-12-21 2023-03-09 2021-03-08
WA5K5 / OK KNUPKE, WILLIAM C I - Individual E - Amateur Extra C - Canceled 1996-11-04 1996-11-04 2001-03-16 2006-11-04
Retrieving licensee (ID) application history for

L00328864

Navigation:
Notes:
  • The callsign a granted application received is shown bold on a green background, inferred from a same-day license grant on this FRN.
  • Receipt dates more than a month old have a gray background.
Receipt
Date		 Applicant
Callsign		Region
/ State		 Licensee
Class		 ULS File
Number		Application
Purpose		 Payment
Date		Last Action
Date		 Application
Status		 Vanity callsign(s)
applied for
Fri 2010-12-17 WC8K 5 / OK E - Amateur Extra 0004538557
B - Batch		 RO - Renewal Only 2010-12-17 2010-12-21 G - Granted —
Fri 2005-12-23 WC8K 5 / OK E - Amateur Extra 0002421241
I - Online		 MD - Modification 2005-12-24 2006-01-10 D - Dismissed
K5CW
Mon 2001-02-26 WA5K 5 / OK E - Amateur Extra 0000380013
I - Online		 MD - Modification 2001-02-27 2001-03-16 G - Granted
WC8K