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 | Martens, Mark D |
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| Attention | |
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| First Name / Middle Init / Last Name / Name Suffix | Mark D Martens |
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| Street Address | 12337 Woodrose Court |
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| Po Box | |
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| Locality | Fort Myers |
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| County | Lee County |
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| State | FL - Florida |
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| Postal Code | 33907 |
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| Zip Location | 26°33'50.0"N 81°52'13.0"W |
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| Maidenhead | EL96bn |
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| FRN | 0036795953 |
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| Geo Region | 4 / FL |
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| Licensee ID/SGIN | L02913303 / 000 |
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| Callsign | KR4DSI |
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| Last Action Date | 2025-06-21 |
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| Radio Service | HA - Amateur |
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| App Purpose | MD - Modification |
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| App Source | I - Online |
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| App Status | G - Granted |
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| Entered Timestamp | 2025-06-01 |
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| Fee Control Num | PGC4925340 |
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| Orig Purpose | MD - Modification |
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| Receipt Date | Mon 2025-06-02 |
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| Payment Date | 2025-06-02 |
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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 | T - Technician |
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| New Seq Callsign | N |
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| Trustee Callsign | |
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| Trustee Name | |
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| ULS Group / ULS Region | D / 4 |
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| Prev Callsign / Prev Class | |
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| Vanity Relationship | |
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| Vanity Type | E - By List |
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| Fee Exempt / Waiver | N / N |
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