Field Name · Applicant
Italic names are derived; accent values differ from the applicant’s prior license.
| Applicant Type | I - Individual |
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| Entity Type | L - Licensee or Assignee |
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| Entity Name | Sierka, Karl F |
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| Attention | Karl Sierka |
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| First Name / Middle Init / Last Name / Name Suffix | Karl F Sierka |
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| Street Address | 177 W Main Street #1075 |
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| Po Box | 2579 |
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| Locality | Quartzsite |
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| County | La Paz County |
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| State | AZ - Arizona |
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| Postal Code | 85346 |
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| Zip Location | 33°38'10.2"N 114°08'44.8"W |
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| Maidenhead | DM23wp |
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| FRN | 0005476791 |
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| Geo Region | 7 / AZ |
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| Licensee ID/SGIN | L00380308 / 000 |
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| Callsign | KC0LBW |
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| Last Action Date | 2025-11-19 |
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| Radio Service | HA - Amateur |
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| App Purpose | AU - Administrative Update |
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| App Source | I - Online |
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| App Status | G - Granted |
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| Entered Timestamp | 2025-11-18 |
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| Fee Control Num | |
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| Orig Purpose | |
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| Receipt Date | Tue 2025-11-18 |
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| Payment Date | |
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| Is From Vec | |
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| Is Trustee | |
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| Operator Group | D - 2x3 |
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| Licensee Class | G - General |
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| New Seq Callsign | |
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| Trustee Callsign | |
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| Trustee Name | |
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| ULS Group / ULS Region | D / 7 |
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| Prev Callsign / Prev Class | |
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| Vanity Relationship | |
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| Vanity Type | |
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| Fee Exempt / Waiver | N / N |
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